./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:39:35,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:39:35,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:39:35,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:39:35,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:39:35,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:39:35,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:39:35,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:39:35,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:39:35,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:39:35,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:39:35,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:39:35,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:39:35,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:39:35,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:39:35,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:39:35,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:39:35,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:39:35,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:39:35,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:39:35,524 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:39:35,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:39:35,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:39:35,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:39:35,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:39:35,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:39:35,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:39:35,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:39:35,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:39:35,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:39:35,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:39:35,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:39:35,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:39:35,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:39:35,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:39:35,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:39:35,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:39:35,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:39:35,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:39:35,542 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:39:35,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:39:35,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:39:35,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:39:35,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:39:35,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:39:35,576 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:39:35,576 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:39:35,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:39:35,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:39:35,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:39:35,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:39:35,577 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:39:35,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:39:35,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:39:35,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:39:35,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:39:35,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:39:35,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:39:35,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:39:35,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:39:35,579 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:39:35,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:39:35,579 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:39:35,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:39:35,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:39:35,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:39:35,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:39:35,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:39:35,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:39:35,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:39:35,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:39:35,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:39:35,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:39:35,580 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:39:35,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:39:35,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:39:35,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 379867ea0961f41e6474fa8c55575cf4bd65e7485349e160061a341c7749e45b [2022-07-21 05:39:35,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:39:35,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:39:35,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:39:35,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:39:36,000 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:39:36,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-21 05:39:36,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b59c0c82/8e2a6f9d4a4a4a6fb6461ce63efbcafb/FLAG104c06a38 [2022-07-21 05:39:36,523 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:39:36,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-21 05:39:36,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b59c0c82/8e2a6f9d4a4a4a6fb6461ce63efbcafb/FLAG104c06a38 [2022-07-21 05:39:36,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b59c0c82/8e2a6f9d4a4a4a6fb6461ce63efbcafb [2022-07-21 05:39:36,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:39:36,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:39:36,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:39:36,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:39:36,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:39:36,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ea9156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36, skipping insertion in model container [2022-07-21 05:39:36,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:39:36,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:39:36,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-07-21 05:39:36,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:39:36,817 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:39:36,865 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7471,7484] [2022-07-21 05:39:36,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:39:36,893 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:39:36,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36 WrapperNode [2022-07-21 05:39:36,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:39:36,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:39:36,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:39:36,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:39:36,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,933 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 613 [2022-07-21 05:39:36,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:39:36,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:39:36,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:39:36,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:39:36,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:36,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:39:36,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:39:36,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:39:36,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:39:36,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (1/1) ... [2022-07-21 05:39:37,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:39:37,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:39:37,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:39:37,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:39:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:39:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:39:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:39:37,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:39:37,139 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:39:37,141 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:39:37,644 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:39:37,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:39:37,654 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:39:37,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:39:37 BoogieIcfgContainer [2022-07-21 05:39:37,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:39:37,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:39:37,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:39:37,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:39:37,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:39:36" (1/3) ... [2022-07-21 05:39:37,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c81ffdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:39:37, skipping insertion in model container [2022-07-21 05:39:37,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:39:36" (2/3) ... [2022-07-21 05:39:37,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c81ffdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:39:37, skipping insertion in model container [2022-07-21 05:39:37,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:39:37" (3/3) ... [2022-07-21 05:39:37,665 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-21 05:39:37,678 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:39:37,678 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:39:37,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:39:37,756 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@2b67cf80, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@adb5b77 [2022-07-21 05:39:37,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:39:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-21 05:39:37,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:37,783 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] [2022-07-21 05:39:37,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:37,788 INFO L85 PathProgramCache]: Analyzing trace with hash 985312972, now seen corresponding path program 1 times [2022-07-21 05:39:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497112699] [2022-07-21 05:39:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:38,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:38,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497112699] [2022-07-21 05:39:38,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497112699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:38,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:38,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:39:38,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865190794] [2022-07-21 05:39:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:38,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:39:38,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:39:38,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:39:38,113 INFO L87 Difference]: Start difference. First operand has 162 states, 160 states have (on average 1.70625) internal successors, (273), 161 states have internal predecessors, (273), 0 states have call successors, (0), 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 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:38,340 INFO L93 Difference]: Finished difference Result 517 states and 836 transitions. [2022-07-21 05:39:38,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:39:38,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-07-21 05:39:38,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:38,365 INFO L225 Difference]: With dead ends: 517 [2022-07-21 05:39:38,365 INFO L226 Difference]: Without dead ends: 438 [2022-07-21 05:39:38,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:38,373 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 913 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:38,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1288 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:39:38,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-21 05:39:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 256. [2022-07-21 05:39:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4980392156862745) internal successors, (382), 255 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 382 transitions. [2022-07-21 05:39:38,444 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 382 transitions. Word has length 50 [2022-07-21 05:39:38,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:38,444 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 382 transitions. [2022-07-21 05:39:38,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,445 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 382 transitions. [2022-07-21 05:39:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 05:39:38,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:38,446 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] [2022-07-21 05:39:38,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:39:38,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash -722006169, now seen corresponding path program 1 times [2022-07-21 05:39:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:38,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419071303] [2022-07-21 05:39:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:38,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:38,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:38,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419071303] [2022-07-21 05:39:38,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419071303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:38,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:38,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:39:38,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704584947] [2022-07-21 05:39:38,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:38,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:39:38,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:39:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:39:38,544 INFO L87 Difference]: Start difference. First operand 256 states and 382 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:38,594 INFO L93 Difference]: Finished difference Result 628 states and 954 transitions. [2022-07-21 05:39:38,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:39:38,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-21 05:39:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:38,596 INFO L225 Difference]: With dead ends: 628 [2022-07-21 05:39:38,596 INFO L226 Difference]: Without dead ends: 430 [2022-07-21 05:39:38,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:39:38,603 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:38,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 420 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:39:38,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-07-21 05:39:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2022-07-21 05:39:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.484777517564403) internal successors, (634), 427 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 634 transitions. [2022-07-21 05:39:38,649 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 634 transitions. Word has length 53 [2022-07-21 05:39:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:38,649 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 634 transitions. [2022-07-21 05:39:38,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 634 transitions. [2022-07-21 05:39:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 05:39:38,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:38,651 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] [2022-07-21 05:39:38,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:39:38,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:38,658 INFO L85 PathProgramCache]: Analyzing trace with hash -695460410, now seen corresponding path program 1 times [2022-07-21 05:39:38,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:38,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913151421] [2022-07-21 05:39:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:38,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:38,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:38,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913151421] [2022-07-21 05:39:38,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913151421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:38,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:38,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:39:38,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493200425] [2022-07-21 05:39:38,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:38,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:39:38,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:38,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:39:38,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:39:38,737 INFO L87 Difference]: Start difference. First operand 428 states and 634 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:38,792 INFO L93 Difference]: Finished difference Result 1078 states and 1615 transitions. [2022-07-21 05:39:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:39:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-21 05:39:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:38,795 INFO L225 Difference]: With dead ends: 1078 [2022-07-21 05:39:38,795 INFO L226 Difference]: Without dead ends: 750 [2022-07-21 05:39:38,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:39:38,796 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 157 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:38,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:39:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-07-21 05:39:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 748. [2022-07-21 05:39:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 747 states have (on average 1.4725568942436413) internal successors, (1100), 747 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 1100 transitions. [2022-07-21 05:39:38,828 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 1100 transitions. Word has length 53 [2022-07-21 05:39:38,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:38,828 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 1100 transitions. [2022-07-21 05:39:38,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,828 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 1100 transitions. [2022-07-21 05:39:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 05:39:38,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:38,830 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] [2022-07-21 05:39:38,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:39:38,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:38,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash -272648633, now seen corresponding path program 1 times [2022-07-21 05:39:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:38,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948082103] [2022-07-21 05:39:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:38,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:38,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948082103] [2022-07-21 05:39:38,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948082103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:38,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:38,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:39:38,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159779473] [2022-07-21 05:39:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:38,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:39:38,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:39:38,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:39:38,881 INFO L87 Difference]: Start difference. First operand 748 states and 1100 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:38,993 INFO L93 Difference]: Finished difference Result 1859 states and 2747 transitions. [2022-07-21 05:39:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:39:38,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-21 05:39:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:38,998 INFO L225 Difference]: With dead ends: 1859 [2022-07-21 05:39:38,998 INFO L226 Difference]: Without dead ends: 1295 [2022-07-21 05:39:39,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:39:39,007 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 144 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:39,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 434 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:39:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-07-21 05:39:39,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1293. [2022-07-21 05:39:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 1.4504643962848298) internal successors, (1874), 1292 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 1874 transitions. [2022-07-21 05:39:39,070 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 1874 transitions. Word has length 53 [2022-07-21 05:39:39,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:39,070 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 1874 transitions. [2022-07-21 05:39:39,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 1874 transitions. [2022-07-21 05:39:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 05:39:39,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:39,077 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] [2022-07-21 05:39:39,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:39:39,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:39,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1724922721, now seen corresponding path program 1 times [2022-07-21 05:39:39,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:39,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407246332] [2022-07-21 05:39:39,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:39,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:39,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:39,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407246332] [2022-07-21 05:39:39,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407246332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:39,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:39,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:39:39,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530466562] [2022-07-21 05:39:39,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:39,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:39:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:39:39,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:39:39,184 INFO L87 Difference]: Start difference. First operand 1293 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:39,334 INFO L93 Difference]: Finished difference Result 2516 states and 3713 transitions. [2022-07-21 05:39:39,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:39:39,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-21 05:39:39,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:39,342 INFO L225 Difference]: With dead ends: 2516 [2022-07-21 05:39:39,343 INFO L226 Difference]: Without dead ends: 2150 [2022-07-21 05:39:39,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:39,344 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 634 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:39,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1128 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:39:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2022-07-21 05:39:39,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1745. [2022-07-21 05:39:39,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1744 states have (on average 1.4581422018348624) internal successors, (2543), 1744 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2543 transitions. [2022-07-21 05:39:39,441 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2543 transitions. Word has length 54 [2022-07-21 05:39:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:39,441 INFO L495 AbstractCegarLoop]: Abstraction has 1745 states and 2543 transitions. [2022-07-21 05:39:39,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2543 transitions. [2022-07-21 05:39:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 05:39:39,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:39,445 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] [2022-07-21 05:39:39,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:39:39,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1943574737, now seen corresponding path program 1 times [2022-07-21 05:39:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:39,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574956255] [2022-07-21 05:39:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:39,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:39,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574956255] [2022-07-21 05:39:39,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574956255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:39,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:39,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:39:39,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835336387] [2022-07-21 05:39:39,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:39,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:39:39,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:39:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:39:39,517 INFO L87 Difference]: Start difference. First operand 1745 states and 2543 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:39,710 INFO L93 Difference]: Finished difference Result 2968 states and 4382 transitions. [2022-07-21 05:39:39,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:39:39,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-21 05:39:39,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:39,719 INFO L225 Difference]: With dead ends: 2968 [2022-07-21 05:39:39,720 INFO L226 Difference]: Without dead ends: 2602 [2022-07-21 05:39:39,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:39,722 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 624 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:39,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1029 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:39:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2022-07-21 05:39:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2091. [2022-07-21 05:39:39,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 2090 states have (on average 1.4631578947368422) internal successors, (3058), 2090 states have internal predecessors, (3058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3058 transitions. [2022-07-21 05:39:39,831 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3058 transitions. Word has length 54 [2022-07-21 05:39:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:39,831 INFO L495 AbstractCegarLoop]: Abstraction has 2091 states and 3058 transitions. [2022-07-21 05:39:39,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3058 transitions. [2022-07-21 05:39:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 05:39:39,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:39,833 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] [2022-07-21 05:39:39,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:39:39,833 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash -867408349, now seen corresponding path program 1 times [2022-07-21 05:39:39,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:39,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634578221] [2022-07-21 05:39:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:39,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:39,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:39,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634578221] [2022-07-21 05:39:39,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634578221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:39,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:39,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:39:39,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993699463] [2022-07-21 05:39:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:39,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:39:39,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:39:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:39:39,904 INFO L87 Difference]: Start difference. First operand 2091 states and 3058 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:40,068 INFO L93 Difference]: Finished difference Result 3367 states and 4972 transitions. [2022-07-21 05:39:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:39:40,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-21 05:39:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:40,076 INFO L225 Difference]: With dead ends: 3367 [2022-07-21 05:39:40,077 INFO L226 Difference]: Without dead ends: 3001 [2022-07-21 05:39:40,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:40,089 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 628 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:40,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1128 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:39:40,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2022-07-21 05:39:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2382. [2022-07-21 05:39:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2381 states have (on average 1.4666106677866442) internal successors, (3492), 2381 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3492 transitions. [2022-07-21 05:39:40,215 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3492 transitions. Word has length 54 [2022-07-21 05:39:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:40,216 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3492 transitions. [2022-07-21 05:39:40,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:40,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3492 transitions. [2022-07-21 05:39:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 05:39:40,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:40,218 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] [2022-07-21 05:39:40,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:39:40,218 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:40,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:40,219 INFO L85 PathProgramCache]: Analyzing trace with hash -554993830, now seen corresponding path program 1 times [2022-07-21 05:39:40,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:40,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728905612] [2022-07-21 05:39:40,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:40,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:40,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:40,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728905612] [2022-07-21 05:39:40,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728905612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:40,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:40,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:39:40,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739993542] [2022-07-21 05:39:40,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:40,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:39:40,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:39:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:39:40,276 INFO L87 Difference]: Start difference. First operand 2382 states and 3492 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:40,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:40,638 INFO L93 Difference]: Finished difference Result 6768 states and 9953 transitions. [2022-07-21 05:39:40,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:39:40,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-21 05:39:40,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:40,652 INFO L225 Difference]: With dead ends: 6768 [2022-07-21 05:39:40,652 INFO L226 Difference]: Without dead ends: 4414 [2022-07-21 05:39:40,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:40,657 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 927 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:40,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 216 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:39:40,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2022-07-21 05:39:40,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 4387. [2022-07-21 05:39:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4387 states, 4386 states have (on average 1.459188326493388) internal successors, (6400), 4386 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4387 states to 4387 states and 6400 transitions. [2022-07-21 05:39:40,934 INFO L78 Accepts]: Start accepts. Automaton has 4387 states and 6400 transitions. Word has length 58 [2022-07-21 05:39:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:40,935 INFO L495 AbstractCegarLoop]: Abstraction has 4387 states and 6400 transitions. [2022-07-21 05:39:40,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4387 states and 6400 transitions. [2022-07-21 05:39:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 05:39:40,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:40,937 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] [2022-07-21 05:39:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:39:40,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash 500702524, now seen corresponding path program 1 times [2022-07-21 05:39:40,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:40,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993680191] [2022-07-21 05:39:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:40,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:40,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:40,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:40,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993680191] [2022-07-21 05:39:40,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993680191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:40,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:40,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:39:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130741500] [2022-07-21 05:39:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:40,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:39:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:39:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:39:40,975 INFO L87 Difference]: Start difference. First operand 4387 states and 6400 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:41,418 INFO L93 Difference]: Finished difference Result 10511 states and 15319 transitions. [2022-07-21 05:39:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:39:41,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-07-21 05:39:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:41,439 INFO L225 Difference]: With dead ends: 10511 [2022-07-21 05:39:41,439 INFO L226 Difference]: Without dead ends: 6170 [2022-07-21 05:39:41,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:41,447 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 886 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:41,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 226 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:39:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2022-07-21 05:39:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6136. [2022-07-21 05:39:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6135 states have (on average 1.4454767726161368) internal successors, (8868), 6135 states have internal predecessors, (8868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 8868 transitions. [2022-07-21 05:39:41,859 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 8868 transitions. Word has length 58 [2022-07-21 05:39:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:41,860 INFO L495 AbstractCegarLoop]: Abstraction has 6136 states and 8868 transitions. [2022-07-21 05:39:41,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 8868 transitions. [2022-07-21 05:39:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 05:39:41,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:41,863 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] [2022-07-21 05:39:41,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:39:41,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1531409244, now seen corresponding path program 1 times [2022-07-21 05:39:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924636641] [2022-07-21 05:39:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:41,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:41,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924636641] [2022-07-21 05:39:41,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924636641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:41,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:41,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:39:41,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758781754] [2022-07-21 05:39:41,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:41,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:39:41,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:41,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:39:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:39:41,900 INFO L87 Difference]: Start difference. First operand 6136 states and 8868 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:42,523 INFO L93 Difference]: Finished difference Result 14628 states and 21107 transitions. [2022-07-21 05:39:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:39:42,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-07-21 05:39:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:42,548 INFO L225 Difference]: With dead ends: 14628 [2022-07-21 05:39:42,548 INFO L226 Difference]: Without dead ends: 8574 [2022-07-21 05:39:42,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:42,554 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 841 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:42,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 228 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:39:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8574 states. [2022-07-21 05:39:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8574 to 8526. [2022-07-21 05:39:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8526 states, 8525 states have (on average 1.4294428152492669) internal successors, (12186), 8525 states have internal predecessors, (12186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8526 states to 8526 states and 12186 transitions. [2022-07-21 05:39:43,027 INFO L78 Accepts]: Start accepts. Automaton has 8526 states and 12186 transitions. Word has length 59 [2022-07-21 05:39:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:43,028 INFO L495 AbstractCegarLoop]: Abstraction has 8526 states and 12186 transitions. [2022-07-21 05:39:43,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:43,028 INFO L276 IsEmpty]: Start isEmpty. Operand 8526 states and 12186 transitions. [2022-07-21 05:39:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 05:39:43,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:43,031 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] [2022-07-21 05:39:43,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:39:43,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -97252013, now seen corresponding path program 1 times [2022-07-21 05:39:43,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:43,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141755022] [2022-07-21 05:39:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:43,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:43,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141755022] [2022-07-21 05:39:43,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141755022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:43,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:43,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:39:43,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797602050] [2022-07-21 05:39:43,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:43,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:39:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:43,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:39:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:43,077 INFO L87 Difference]: Start difference. First operand 8526 states and 12186 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:45,260 INFO L93 Difference]: Finished difference Result 33189 states and 47108 transitions. [2022-07-21 05:39:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:39:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-21 05:39:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:45,319 INFO L225 Difference]: With dead ends: 33189 [2022-07-21 05:39:45,319 INFO L226 Difference]: Without dead ends: 28811 [2022-07-21 05:39:45,329 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 [2022-07-21 05:39:45,330 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 2053 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:45,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 343 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:39:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28811 states. [2022-07-21 05:39:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28811 to 8546. [2022-07-21 05:39:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8546 states, 8545 states have (on average 1.4289057928613225) internal successors, (12210), 8545 states have internal predecessors, (12210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 12210 transitions. [2022-07-21 05:39:46,271 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 12210 transitions. Word has length 60 [2022-07-21 05:39:46,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:46,271 INFO L495 AbstractCegarLoop]: Abstraction has 8546 states and 12210 transitions. [2022-07-21 05:39:46,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 12210 transitions. [2022-07-21 05:39:46,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 05:39:46,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:46,275 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] [2022-07-21 05:39:46,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:39:46,275 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -172891724, now seen corresponding path program 1 times [2022-07-21 05:39:46,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739522402] [2022-07-21 05:39:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:46,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:46,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739522402] [2022-07-21 05:39:46,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739522402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:46,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:46,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:39:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784743577] [2022-07-21 05:39:46,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:39:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:39:46,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:46,326 INFO L87 Difference]: Start difference. First operand 8546 states and 12210 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:49,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:49,817 INFO L93 Difference]: Finished difference Result 39223 states and 55832 transitions. [2022-07-21 05:39:49,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:39:49,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-21 05:39:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:49,879 INFO L225 Difference]: With dead ends: 39223 [2022-07-21 05:39:49,879 INFO L226 Difference]: Without dead ends: 34969 [2022-07-21 05:39:49,893 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 [2022-07-21 05:39:49,894 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2344 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:49,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2344 Valid, 388 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:39:49,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34969 states. [2022-07-21 05:39:50,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34969 to 8656. [2022-07-21 05:39:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8656 states, 8655 states have (on average 1.427151935297516) internal successors, (12352), 8655 states have internal predecessors, (12352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 12352 transitions. [2022-07-21 05:39:50,972 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 12352 transitions. Word has length 60 [2022-07-21 05:39:50,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:50,972 INFO L495 AbstractCegarLoop]: Abstraction has 8656 states and 12352 transitions. [2022-07-21 05:39:50,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 12352 transitions. [2022-07-21 05:39:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 05:39:50,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:50,980 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] [2022-07-21 05:39:50,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:39:50,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2054897963, now seen corresponding path program 1 times [2022-07-21 05:39:50,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:50,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290086622] [2022-07-21 05:39:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:51,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:51,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290086622] [2022-07-21 05:39:51,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290086622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:51,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:51,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:39:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532073382] [2022-07-21 05:39:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:51,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:39:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:51,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:39:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:39:51,053 INFO L87 Difference]: Start difference. First operand 8656 states and 12352 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:56,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:56,802 INFO L93 Difference]: Finished difference Result 45960 states and 65252 transitions. [2022-07-21 05:39:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:39:56,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-07-21 05:39:56,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:56,884 INFO L225 Difference]: With dead ends: 45960 [2022-07-21 05:39:56,885 INFO L226 Difference]: Without dead ends: 42862 [2022-07-21 05:39:56,901 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 [2022-07-21 05:39:56,904 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2716 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2716 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:56,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2716 Valid, 410 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:39:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42862 states. [2022-07-21 05:39:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42862 to 8712. [2022-07-21 05:39:58,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8711 states have (on average 1.4258982895189989) internal successors, (12421), 8711 states have internal predecessors, (12421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 12421 transitions. [2022-07-21 05:39:58,243 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 12421 transitions. Word has length 60 [2022-07-21 05:39:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:58,244 INFO L495 AbstractCegarLoop]: Abstraction has 8712 states and 12421 transitions. [2022-07-21 05:39:58,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:58,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 12421 transitions. [2022-07-21 05:39:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:39:58,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:58,248 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] [2022-07-21 05:39:58,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:39:58,248 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1036507303, now seen corresponding path program 1 times [2022-07-21 05:39:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:58,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962706640] [2022-07-21 05:39:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:58,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:58,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:58,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962706640] [2022-07-21 05:39:58,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962706640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:58,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:58,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 05:39:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138133866] [2022-07-21 05:39:58,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:58,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:39:58,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:58,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:39:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:39:58,380 INFO L87 Difference]: Start difference. First operand 8712 states and 12421 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:03,673 INFO L93 Difference]: Finished difference Result 33436 states and 47603 transitions. [2022-07-21 05:40:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 05:40:03,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-21 05:40:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:03,716 INFO L225 Difference]: With dead ends: 33436 [2022-07-21 05:40:03,716 INFO L226 Difference]: Without dead ends: 26265 [2022-07-21 05:40:03,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-21 05:40:03,733 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 2033 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:03,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1549 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:40:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26265 states. [2022-07-21 05:40:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26265 to 8546. [2022-07-21 05:40:05,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8546 states, 8545 states have (on average 1.423990637799883) internal successors, (12168), 8545 states have internal predecessors, (12168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8546 states to 8546 states and 12168 transitions. [2022-07-21 05:40:05,330 INFO L78 Accepts]: Start accepts. Automaton has 8546 states and 12168 transitions. Word has length 62 [2022-07-21 05:40:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:05,331 INFO L495 AbstractCegarLoop]: Abstraction has 8546 states and 12168 transitions. [2022-07-21 05:40:05,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:05,331 INFO L276 IsEmpty]: Start isEmpty. Operand 8546 states and 12168 transitions. [2022-07-21 05:40:05,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:40:05,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:05,334 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] [2022-07-21 05:40:05,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:40:05,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:05,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1459319080, now seen corresponding path program 1 times [2022-07-21 05:40:05,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:05,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717862990] [2022-07-21 05:40:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:05,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:05,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:05,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717862990] [2022-07-21 05:40:05,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717862990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:05,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:05,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 05:40:05,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993168292] [2022-07-21 05:40:05,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:05,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:40:05,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:05,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:40:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:40:05,518 INFO L87 Difference]: Start difference. First operand 8546 states and 12168 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:10,071 INFO L93 Difference]: Finished difference Result 28776 states and 40687 transitions. [2022-07-21 05:40:10,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-21 05:40:10,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-21 05:40:10,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:10,100 INFO L225 Difference]: With dead ends: 28776 [2022-07-21 05:40:10,100 INFO L226 Difference]: Without dead ends: 21466 [2022-07-21 05:40:10,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-21 05:40:10,112 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1917 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:10,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 1585 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:40:10,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21466 states. [2022-07-21 05:40:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21466 to 8253. [2022-07-21 05:40:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 1.422927775084828) internal successors, (11742), 8252 states have internal predecessors, (11742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 11742 transitions. [2022-07-21 05:40:11,422 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 11742 transitions. Word has length 62 [2022-07-21 05:40:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:11,422 INFO L495 AbstractCegarLoop]: Abstraction has 8253 states and 11742 transitions. [2022-07-21 05:40:11,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 11742 transitions. [2022-07-21 05:40:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:40:11,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:11,425 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] [2022-07-21 05:40:11,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:40:11,425 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:11,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:11,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2010042985, now seen corresponding path program 1 times [2022-07-21 05:40:11,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:11,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138732379] [2022-07-21 05:40:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:11,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:11,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:11,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138732379] [2022-07-21 05:40:11,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138732379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:11,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:11,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 05:40:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832620836] [2022-07-21 05:40:11,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:11,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:40:11,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:40:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:40:11,528 INFO L87 Difference]: Start difference. First operand 8253 states and 11742 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:16,278 INFO L93 Difference]: Finished difference Result 28911 states and 41122 transitions. [2022-07-21 05:40:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 05:40:16,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-07-21 05:40:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:16,317 INFO L225 Difference]: With dead ends: 28911 [2022-07-21 05:40:16,318 INFO L226 Difference]: Without dead ends: 21808 [2022-07-21 05:40:16,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2022-07-21 05:40:16,336 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 2128 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:16,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 1309 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:40:16,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21808 states. [2022-07-21 05:40:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21808 to 8112. [2022-07-21 05:40:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8112 states, 8111 states have (on average 1.423622241400567) internal successors, (11547), 8111 states have internal predecessors, (11547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 11547 transitions. [2022-07-21 05:40:18,054 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 11547 transitions. Word has length 62 [2022-07-21 05:40:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:18,054 INFO L495 AbstractCegarLoop]: Abstraction has 8112 states and 11547 transitions. [2022-07-21 05:40:18,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:18,055 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 11547 transitions. [2022-07-21 05:40:18,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:40:18,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:18,057 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] [2022-07-21 05:40:18,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:40:18,058 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1983119998, now seen corresponding path program 1 times [2022-07-21 05:40:18,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:18,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011807954] [2022-07-21 05:40:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:18,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:18,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011807954] [2022-07-21 05:40:18,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011807954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:18,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:18,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:40:18,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634703548] [2022-07-21 05:40:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:18,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:40:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:40:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:18,082 INFO L87 Difference]: Start difference. First operand 8112 states and 11547 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:19,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:19,442 INFO L93 Difference]: Finished difference Result 11169 states and 15856 transitions. [2022-07-21 05:40:19,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:40:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-21 05:40:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:19,454 INFO L225 Difference]: With dead ends: 11169 [2022-07-21 05:40:19,455 INFO L226 Difference]: Without dead ends: 7915 [2022-07-21 05:40:19,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:19,461 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 150 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:19,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 523 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:40:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7915 states. [2022-07-21 05:40:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7915 to 7913. [2022-07-21 05:40:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7913 states, 7912 states have (on average 1.397118301314459) internal successors, (11054), 7912 states have internal predecessors, (11054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 11054 transitions. [2022-07-21 05:40:21,348 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 11054 transitions. Word has length 63 [2022-07-21 05:40:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:21,348 INFO L495 AbstractCegarLoop]: Abstraction has 7913 states and 11054 transitions. [2022-07-21 05:40:21,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:21,349 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 11054 transitions. [2022-07-21 05:40:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:40:21,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:21,351 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] [2022-07-21 05:40:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 05:40:21,351 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:21,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1051173576, now seen corresponding path program 1 times [2022-07-21 05:40:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:21,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459024895] [2022-07-21 05:40:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:21,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:21,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459024895] [2022-07-21 05:40:21,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459024895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:21,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:21,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:40:21,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466298767] [2022-07-21 05:40:21,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:21,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:40:21,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:21,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:40:21,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:21,373 INFO L87 Difference]: Start difference. First operand 7913 states and 11054 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:22,707 INFO L93 Difference]: Finished difference Result 11329 states and 15821 transitions. [2022-07-21 05:40:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:40:22,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-21 05:40:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:22,715 INFO L225 Difference]: With dead ends: 11329 [2022-07-21 05:40:22,716 INFO L226 Difference]: Without dead ends: 7041 [2022-07-21 05:40:22,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:22,720 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 136 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:22,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 518 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:40:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2022-07-21 05:40:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 7039. [2022-07-21 05:40:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7039 states, 7038 states have (on average 1.3751065643648763) internal successors, (9678), 7038 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7039 states to 7039 states and 9678 transitions. [2022-07-21 05:40:23,921 INFO L78 Accepts]: Start accepts. Automaton has 7039 states and 9678 transitions. Word has length 63 [2022-07-21 05:40:23,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:23,921 INFO L495 AbstractCegarLoop]: Abstraction has 7039 states and 9678 transitions. [2022-07-21 05:40:23,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 7039 states and 9678 transitions. [2022-07-21 05:40:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 05:40:23,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:23,924 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] [2022-07-21 05:40:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 05:40:23,924 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash -125701859, now seen corresponding path program 1 times [2022-07-21 05:40:23,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:23,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337089703] [2022-07-21 05:40:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:23,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:23,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:23,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337089703] [2022-07-21 05:40:23,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337089703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:23,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:23,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:40:23,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192664099] [2022-07-21 05:40:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:40:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:40:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:23,945 INFO L87 Difference]: Start difference. First operand 7039 states and 9678 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:24,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:24,960 INFO L93 Difference]: Finished difference Result 9423 states and 12952 transitions. [2022-07-21 05:40:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:40:24,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-21 05:40:24,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:24,967 INFO L225 Difference]: With dead ends: 9423 [2022-07-21 05:40:24,968 INFO L226 Difference]: Without dead ends: 5436 [2022-07-21 05:40:24,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:24,972 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 148 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:24,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 529 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:40:24,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2022-07-21 05:40:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5434. [2022-07-21 05:40:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5434 states, 5433 states have (on average 1.3519234308853303) internal successors, (7345), 5433 states have internal predecessors, (7345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 7345 transitions. [2022-07-21 05:40:25,946 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 7345 transitions. Word has length 63 [2022-07-21 05:40:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:25,946 INFO L495 AbstractCegarLoop]: Abstraction has 5434 states and 7345 transitions. [2022-07-21 05:40:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 7345 transitions. [2022-07-21 05:40:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:40:25,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:25,949 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] [2022-07-21 05:40:25,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 05:40:25,949 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash 666404545, now seen corresponding path program 1 times [2022-07-21 05:40:25,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:25,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695949582] [2022-07-21 05:40:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:25,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:25,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:25,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695949582] [2022-07-21 05:40:25,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695949582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:25,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:25,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:40:25,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685399898] [2022-07-21 05:40:25,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:25,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:40:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:40:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:25,969 INFO L87 Difference]: Start difference. First operand 5434 states and 7345 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:27,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:27,497 INFO L93 Difference]: Finished difference Result 10138 states and 13774 transitions. [2022-07-21 05:40:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:40:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 05:40:27,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:27,508 INFO L225 Difference]: With dead ends: 10138 [2022-07-21 05:40:27,508 INFO L226 Difference]: Without dead ends: 7401 [2022-07-21 05:40:27,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:27,513 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 173 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:27,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:40:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2022-07-21 05:40:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 5217. [2022-07-21 05:40:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 1.3506518404907975) internal successors, (7045), 5216 states have internal predecessors, (7045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7045 transitions. [2022-07-21 05:40:28,433 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7045 transitions. Word has length 64 [2022-07-21 05:40:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:28,433 INFO L495 AbstractCegarLoop]: Abstraction has 5217 states and 7045 transitions. [2022-07-21 05:40:28,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7045 transitions. [2022-07-21 05:40:28,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:40:28,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:28,436 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] [2022-07-21 05:40:28,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 05:40:28,436 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash 859970200, now seen corresponding path program 1 times [2022-07-21 05:40:28,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:28,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388034563] [2022-07-21 05:40:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:28,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:29,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388034563] [2022-07-21 05:40:29,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388034563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:29,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:29,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-21 05:40:29,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525483713] [2022-07-21 05:40:29,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:29,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 05:40:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 05:40:29,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-21 05:40:29,074 INFO L87 Difference]: Start difference. First operand 5217 states and 7045 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:33,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:33,978 INFO L93 Difference]: Finished difference Result 10192 states and 13856 transitions. [2022-07-21 05:40:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 05:40:33,978 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 05:40:33,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:33,991 INFO L225 Difference]: With dead ends: 10192 [2022-07-21 05:40:33,991 INFO L226 Difference]: Without dead ends: 10076 [2022-07-21 05:40:33,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=393, Invalid=1863, Unknown=0, NotChecked=0, Total=2256 [2022-07-21 05:40:33,995 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2333 mSDsluCounter, 6220 mSDsCounter, 0 mSdLazyCounter, 3639 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2333 SdHoareTripleChecker+Valid, 6666 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:33,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2333 Valid, 6666 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3639 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:40:34,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10076 states. [2022-07-21 05:40:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10076 to 5217. [2022-07-21 05:40:35,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 1.3504601226993864) internal successors, (7044), 5216 states have internal predecessors, (7044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7044 transitions. [2022-07-21 05:40:35,279 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7044 transitions. Word has length 64 [2022-07-21 05:40:35,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:35,279 INFO L495 AbstractCegarLoop]: Abstraction has 5217 states and 7044 transitions. [2022-07-21 05:40:35,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7044 transitions. [2022-07-21 05:40:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:40:35,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:35,282 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] [2022-07-21 05:40:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 05:40:35,282 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:35,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1948770272, now seen corresponding path program 1 times [2022-07-21 05:40:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:35,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100376792] [2022-07-21 05:40:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:35,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:35,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100376792] [2022-07-21 05:40:35,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100376792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:35,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:35,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-21 05:40:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7083081] [2022-07-21 05:40:35,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:35,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 05:40:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:35,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 05:40:35,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2022-07-21 05:40:35,809 INFO L87 Difference]: Start difference. First operand 5217 states and 7044 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:40,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:40,988 INFO L93 Difference]: Finished difference Result 9059 states and 12300 transitions. [2022-07-21 05:40:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 05:40:40,988 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 05:40:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:40,998 INFO L225 Difference]: With dead ends: 9059 [2022-07-21 05:40:40,999 INFO L226 Difference]: Without dead ends: 8943 [2022-07-21 05:40:41,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2022-07-21 05:40:41,002 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1968 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 6245 SdHoareTripleChecker+Invalid, 3603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:41,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 6245 Invalid, 3603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3576 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 05:40:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8943 states. [2022-07-21 05:40:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8943 to 5217. [2022-07-21 05:40:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5216 states have (on average 1.3502684049079754) internal successors, (7043), 5216 states have internal predecessors, (7043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7043 transitions. [2022-07-21 05:40:42,018 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7043 transitions. Word has length 64 [2022-07-21 05:40:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:42,018 INFO L495 AbstractCegarLoop]: Abstraction has 5217 states and 7043 transitions. [2022-07-21 05:40:42,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:42,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7043 transitions. [2022-07-21 05:40:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:40:42,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:42,020 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] [2022-07-21 05:40:42,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 05:40:42,021 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 682523932, now seen corresponding path program 1 times [2022-07-21 05:40:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:42,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172271372] [2022-07-21 05:40:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:42,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:42,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:42,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172271372] [2022-07-21 05:40:42,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172271372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:42,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:42,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-21 05:40:42,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491788869] [2022-07-21 05:40:42,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:42,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 05:40:42,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:42,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 05:40:42,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-21 05:40:42,504 INFO L87 Difference]: Start difference. First operand 5217 states and 7043 transitions. Second operand has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:47,688 INFO L93 Difference]: Finished difference Result 8764 states and 11872 transitions. [2022-07-21 05:40:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 05:40:47,688 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 05:40:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:47,704 INFO L225 Difference]: With dead ends: 8764 [2022-07-21 05:40:47,704 INFO L226 Difference]: Without dead ends: 8648 [2022-07-21 05:40:47,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2022-07-21 05:40:47,714 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2473 mSDsluCounter, 6879 mSDsCounter, 0 mSdLazyCounter, 4255 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2473 SdHoareTripleChecker+Valid, 7381 SdHoareTripleChecker+Invalid, 4302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:47,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2473 Valid, 7381 Invalid, 4302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4255 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 05:40:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8648 states. [2022-07-21 05:40:48,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8648 to 5223. [2022-07-21 05:40:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 5222 states have (on average 1.3500574492531596) internal successors, (7050), 5222 states have internal predecessors, (7050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 7050 transitions. [2022-07-21 05:40:48,828 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 7050 transitions. Word has length 64 [2022-07-21 05:40:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:48,828 INFO L495 AbstractCegarLoop]: Abstraction has 5223 states and 7050 transitions. [2022-07-21 05:40:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.782608695652174) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 7050 transitions. [2022-07-21 05:40:48,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:40:48,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:48,831 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] [2022-07-21 05:40:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 05:40:48,831 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1079669093, now seen corresponding path program 1 times [2022-07-21 05:40:48,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:48,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110022066] [2022-07-21 05:40:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:48,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:48,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:48,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110022066] [2022-07-21 05:40:48,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110022066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:48,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:48,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:40:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379408509] [2022-07-21 05:40:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:48,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:40:48,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:48,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:40:48,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:48,890 INFO L87 Difference]: Start difference. First operand 5223 states and 7050 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:50,433 INFO L93 Difference]: Finished difference Result 9704 states and 13175 transitions. [2022-07-21 05:40:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:40:50,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 05:40:50,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:50,443 INFO L225 Difference]: With dead ends: 9704 [2022-07-21 05:40:50,443 INFO L226 Difference]: Without dead ends: 7084 [2022-07-21 05:40:50,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:50,448 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 175 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:50,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 349 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:40:50,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7084 states. [2022-07-21 05:40:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7084 to 4951. [2022-07-21 05:40:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 1.3496969696969696) internal successors, (6681), 4950 states have internal predecessors, (6681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 6681 transitions. [2022-07-21 05:40:51,493 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 6681 transitions. Word has length 64 [2022-07-21 05:40:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:51,493 INFO L495 AbstractCegarLoop]: Abstraction has 4951 states and 6681 transitions. [2022-07-21 05:40:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 6681 transitions. [2022-07-21 05:40:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 05:40:51,495 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:51,496 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] [2022-07-21 05:40:51,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 05:40:51,496 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2017308149, now seen corresponding path program 1 times [2022-07-21 05:40:51,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:51,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606249268] [2022-07-21 05:40:51,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:51,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:51,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606249268] [2022-07-21 05:40:51,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606249268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:51,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:51,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:40:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693902369] [2022-07-21 05:40:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:40:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:40:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:51,515 INFO L87 Difference]: Start difference. First operand 4951 states and 6681 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:52,746 INFO L93 Difference]: Finished difference Result 7505 states and 10139 transitions. [2022-07-21 05:40:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:40:52,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-21 05:40:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:52,754 INFO L225 Difference]: With dead ends: 7505 [2022-07-21 05:40:52,754 INFO L226 Difference]: Without dead ends: 5705 [2022-07-21 05:40:52,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:40:52,757 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 163 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:52,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 335 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:40:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5705 states. [2022-07-21 05:40:53,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5705 to 4732. [2022-07-21 05:40:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4731 states have (on average 1.3496089621644474) internal successors, (6385), 4731 states have internal predecessors, (6385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:53,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 6385 transitions. [2022-07-21 05:40:53,773 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 6385 transitions. Word has length 64 [2022-07-21 05:40:53,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:53,773 INFO L495 AbstractCegarLoop]: Abstraction has 4732 states and 6385 transitions. [2022-07-21 05:40:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:53,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 6385 transitions. [2022-07-21 05:40:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 05:40:53,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:53,775 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] [2022-07-21 05:40:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 05:40:53,775 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash 144276108, now seen corresponding path program 1 times [2022-07-21 05:40:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:53,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674389127] [2022-07-21 05:40:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:53,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:53,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674389127] [2022-07-21 05:40:53,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674389127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:53,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:53,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 05:40:53,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266177421] [2022-07-21 05:40:53,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:53,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 05:40:53,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:53,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 05:40:53,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:40:53,993 INFO L87 Difference]: Start difference. First operand 4732 states and 6385 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:40:56,994 INFO L93 Difference]: Finished difference Result 9235 states and 12538 transitions. [2022-07-21 05:40:56,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:40:56,995 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 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 [2022-07-21 05:40:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:40:57,009 INFO L225 Difference]: With dead ends: 9235 [2022-07-21 05:40:57,010 INFO L226 Difference]: Without dead ends: 8559 [2022-07-21 05:40:57,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-07-21 05:40:57,014 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1655 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:40:57,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 2543 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:40:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8559 states. [2022-07-21 05:40:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8559 to 4614. [2022-07-21 05:40:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 4613 states have (on average 1.3503143290700195) internal successors, (6229), 4613 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 6229 transitions. [2022-07-21 05:40:58,194 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 6229 transitions. Word has length 65 [2022-07-21 05:40:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:40:58,195 INFO L495 AbstractCegarLoop]: Abstraction has 4614 states and 6229 transitions. [2022-07-21 05:40:58,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:40:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 6229 transitions. [2022-07-21 05:40:58,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 05:40:58,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:40:58,197 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] [2022-07-21 05:40:58,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 05:40:58,197 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:40:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:40:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash 402441546, now seen corresponding path program 1 times [2022-07-21 05:40:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:40:58,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599331186] [2022-07-21 05:40:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:40:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:40:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:40:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:40:58,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:40:58,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599331186] [2022-07-21 05:40:58,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599331186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:40:58,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:40:58,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 05:40:58,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708807343] [2022-07-21 05:40:58,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:40:58,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 05:40:58,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:40:58,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 05:40:58,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:40:58,481 INFO L87 Difference]: Start difference. First operand 4614 states and 6229 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:04,528 INFO L93 Difference]: Finished difference Result 11051 states and 15042 transitions. [2022-07-21 05:41:04,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 05:41:04,528 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 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 [2022-07-21 05:41:04,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:04,543 INFO L225 Difference]: With dead ends: 11051 [2022-07-21 05:41:04,543 INFO L226 Difference]: Without dead ends: 10612 [2022-07-21 05:41:04,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=378, Invalid=1344, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 05:41:04,546 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 2321 mSDsluCounter, 4499 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 5187 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:04,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 5187 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:41:04,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2022-07-21 05:41:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 4533. [2022-07-21 05:41:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4533 states, 4532 states have (on average 1.3506178287731685) internal successors, (6121), 4532 states have internal predecessors, (6121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4533 states to 4533 states and 6121 transitions. [2022-07-21 05:41:06,347 INFO L78 Accepts]: Start accepts. Automaton has 4533 states and 6121 transitions. Word has length 65 [2022-07-21 05:41:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:06,347 INFO L495 AbstractCegarLoop]: Abstraction has 4533 states and 6121 transitions. [2022-07-21 05:41:06,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4533 states and 6121 transitions. [2022-07-21 05:41:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 05:41:06,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:06,350 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] [2022-07-21 05:41:06,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 05:41:06,350 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1563174538, now seen corresponding path program 1 times [2022-07-21 05:41:06,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:06,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805474259] [2022-07-21 05:41:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:06,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:06,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:06,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805474259] [2022-07-21 05:41:06,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805474259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:06,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:06,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:41:06,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800304421] [2022-07-21 05:41:06,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:06,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:41:06,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:06,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:41:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:06,386 INFO L87 Difference]: Start difference. First operand 4533 states and 6121 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2022-07-21 05:41:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:08,094 INFO L93 Difference]: Finished difference Result 4539 states and 6124 transitions. [2022-07-21 05:41:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:41:08,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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 [2022-07-21 05:41:08,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:08,101 INFO L225 Difference]: With dead ends: 4539 [2022-07-21 05:41:08,101 INFO L226 Difference]: Without dead ends: 4096 [2022-07-21 05:41:08,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:41:08,103 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 576 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:08,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 649 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2022-07-21 05:41:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 4092. [2022-07-21 05:41:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4091 states have (on average 1.3551698851136642) internal successors, (5544), 4091 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 5544 transitions. [2022-07-21 05:41:09,681 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 5544 transitions. Word has length 69 [2022-07-21 05:41:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:09,681 INFO L495 AbstractCegarLoop]: Abstraction has 4092 states and 5544 transitions. [2022-07-21 05:41:09,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 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) [2022-07-21 05:41:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 5544 transitions. [2022-07-21 05:41:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 05:41:09,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:09,685 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] [2022-07-21 05:41:09,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 05:41:09,685 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:09,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:09,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1535111263, now seen corresponding path program 1 times [2022-07-21 05:41:09,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:09,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114489948] [2022-07-21 05:41:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:09,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:09,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:09,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114489948] [2022-07-21 05:41:09,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114489948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:09,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:09,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:09,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301848712] [2022-07-21 05:41:09,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:09,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:09,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:09,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:09,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:09,719 INFO L87 Difference]: Start difference. First operand 4092 states and 5544 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2022-07-21 05:41:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:12,650 INFO L93 Difference]: Finished difference Result 10743 states and 14661 transitions. [2022-07-21 05:41:12,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:12,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 [2022-07-21 05:41:12,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:12,660 INFO L225 Difference]: With dead ends: 10743 [2022-07-21 05:41:12,660 INFO L226 Difference]: Without dead ends: 7144 [2022-07-21 05:41:12,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:12,665 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 115 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:12,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 430 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:12,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7144 states. [2022-07-21 05:41:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7144 to 6674. [2022-07-21 05:41:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6674 states, 6673 states have (on average 1.3484190019481492) internal successors, (8998), 6673 states have internal predecessors, (8998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6674 states to 6674 states and 8998 transitions. [2022-07-21 05:41:15,524 INFO L78 Accepts]: Start accepts. Automaton has 6674 states and 8998 transitions. Word has length 72 [2022-07-21 05:41:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:15,525 INFO L495 AbstractCegarLoop]: Abstraction has 6674 states and 8998 transitions. [2022-07-21 05:41:15,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2022-07-21 05:41:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 6674 states and 8998 transitions. [2022-07-21 05:41:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 05:41:15,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:15,527 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] [2022-07-21 05:41:15,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 05:41:15,527 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1480821562, now seen corresponding path program 1 times [2022-07-21 05:41:15,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:15,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295700362] [2022-07-21 05:41:15,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:15,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:15,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:15,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295700362] [2022-07-21 05:41:15,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295700362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:15,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:15,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:15,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377497399] [2022-07-21 05:41:15,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:15,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:15,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:15,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:15,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:15,552 INFO L87 Difference]: Start difference. First operand 6674 states and 8998 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2022-07-21 05:41:19,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:19,788 INFO L93 Difference]: Finished difference Result 18382 states and 24898 transitions. [2022-07-21 05:41:19,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:19,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 [2022-07-21 05:41:19,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:19,805 INFO L225 Difference]: With dead ends: 18382 [2022-07-21 05:41:19,806 INFO L226 Difference]: Without dead ends: 12218 [2022-07-21 05:41:19,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:19,819 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 105 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:19,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 422 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:19,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12218 states. [2022-07-21 05:41:23,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12218 to 11312. [2022-07-21 05:41:23,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11312 states, 11311 states have (on average 1.343736186013615) internal successors, (15199), 11311 states have internal predecessors, (15199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11312 states to 11312 states and 15199 transitions. [2022-07-21 05:41:23,434 INFO L78 Accepts]: Start accepts. Automaton has 11312 states and 15199 transitions. Word has length 73 [2022-07-21 05:41:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:23,434 INFO L495 AbstractCegarLoop]: Abstraction has 11312 states and 15199 transitions. [2022-07-21 05:41:23,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2022-07-21 05:41:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 11312 states and 15199 transitions. [2022-07-21 05:41:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 05:41:23,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:23,436 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] [2022-07-21 05:41:23,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 05:41:23,436 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:23,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:23,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1423402598, now seen corresponding path program 1 times [2022-07-21 05:41:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:23,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059970934] [2022-07-21 05:41:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:23,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:23,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:23,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059970934] [2022-07-21 05:41:23,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059970934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:23,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:23,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:41:23,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569588348] [2022-07-21 05:41:23,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:23,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:41:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:41:23,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:23,459 INFO L87 Difference]: Start difference. First operand 11312 states and 15199 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) [2022-07-21 05:41:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:31,027 INFO L93 Difference]: Finished difference Result 31676 states and 42549 transitions. [2022-07-21 05:41:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:41:31,028 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 [2022-07-21 05:41:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:31,056 INFO L225 Difference]: With dead ends: 31676 [2022-07-21 05:41:31,056 INFO L226 Difference]: Without dead ends: 20874 [2022-07-21 05:41:31,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:41:31,069 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 95 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:31,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 412 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20874 states. [2022-07-21 05:41:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20874 to 19064. [2022-07-21 05:41:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19064 states, 19063 states have (on average 1.3312175418349683) internal successors, (25377), 19063 states have internal predecessors, (25377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:41:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19064 states to 19064 states and 25377 transitions. [2022-07-21 05:41:37,900 INFO L78 Accepts]: Start accepts. Automaton has 19064 states and 25377 transitions. Word has length 74 [2022-07-21 05:41:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:41:37,900 INFO L495 AbstractCegarLoop]: Abstraction has 19064 states and 25377 transitions. [2022-07-21 05:41:37,900 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) [2022-07-21 05:41:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 19064 states and 25377 transitions. [2022-07-21 05:41:37,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 05:41:37,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:41:37,902 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] [2022-07-21 05:41:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 05:41:37,902 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:41:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:41:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2071973989, now seen corresponding path program 1 times [2022-07-21 05:41:37,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:41:37,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867507297] [2022-07-21 05:41:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:41:37,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:41:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:41:37,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:41:37,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:41:37,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867507297] [2022-07-21 05:41:37,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867507297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:41:37,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:41:37,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:41:37,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136858551] [2022-07-21 05:41:37,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:41:37,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:41:37,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:41:37,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:41:37,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:41:37,943 INFO L87 Difference]: Start difference. First operand 19064 states and 25377 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2022-07-21 05:41:53,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:41:53,808 INFO L93 Difference]: Finished difference Result 40814 states and 53487 transitions. [2022-07-21 05:41:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:41:53,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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 [2022-07-21 05:41:53,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:41:53,864 INFO L225 Difference]: With dead ends: 40814 [2022-07-21 05:41:53,864 INFO L226 Difference]: Without dead ends: 40812 [2022-07-21 05:41:53,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-21 05:41:53,876 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 331 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:41:53,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 989 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:41:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40812 states. [2022-07-21 05:42:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40812 to 21032. [2022-07-21 05:42:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21032 states, 21031 states have (on average 1.300223479625315) internal successors, (27345), 21031 states have internal predecessors, (27345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21032 states to 21032 states and 27345 transitions. [2022-07-21 05:42:01,919 INFO L78 Accepts]: Start accepts. Automaton has 21032 states and 27345 transitions. Word has length 77 [2022-07-21 05:42:01,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:42:01,919 INFO L495 AbstractCegarLoop]: Abstraction has 21032 states and 27345 transitions. [2022-07-21 05:42:01,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 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) [2022-07-21 05:42:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 21032 states and 27345 transitions. [2022-07-21 05:42:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:42:01,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:42:01,921 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] [2022-07-21 05:42:01,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 05:42:01,922 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:42:01,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:42:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1914492299, now seen corresponding path program 1 times [2022-07-21 05:42:01,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:42:01,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677810108] [2022-07-21 05:42:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:42:01,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:42:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:42:01,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:42:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:42:01,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677810108] [2022-07-21 05:42:01,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677810108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:42:01,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:42:01,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:42:01,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384721677] [2022-07-21 05:42:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:42:01,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:42:01,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:42:01,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:42:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:42:01,988 INFO L87 Difference]: Start difference. First operand 21032 states and 27345 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:42:13,923 INFO L93 Difference]: Finished difference Result 51852 states and 67059 transitions. [2022-07-21 05:42:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:42:13,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-07-21 05:42:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:42:13,983 INFO L225 Difference]: With dead ends: 51852 [2022-07-21 05:42:13,984 INFO L226 Difference]: Without dead ends: 31330 [2022-07-21 05:42:14,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:42:14,007 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 131 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:42:14,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:42:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31330 states. [2022-07-21 05:42:26,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31330 to 31328. [2022-07-21 05:42:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31328 states, 31327 states have (on average 1.2754812142879943) internal successors, (39957), 31327 states have internal predecessors, (39957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31328 states to 31328 states and 39957 transitions. [2022-07-21 05:42:26,409 INFO L78 Accepts]: Start accepts. Automaton has 31328 states and 39957 transitions. Word has length 78 [2022-07-21 05:42:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:42:26,409 INFO L495 AbstractCegarLoop]: Abstraction has 31328 states and 39957 transitions. [2022-07-21 05:42:26,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:42:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 31328 states and 39957 transitions. [2022-07-21 05:42:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-21 05:42:26,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:42:26,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:42:26,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 05:42:26,417 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:42:26,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:42:26,418 INFO L85 PathProgramCache]: Analyzing trace with hash 660908331, now seen corresponding path program 1 times [2022-07-21 05:42:26,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:42:26,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335699958] [2022-07-21 05:42:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:42:26,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:42:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:42:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:42:26,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:42:26,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335699958] [2022-07-21 05:42:26,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335699958] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:42:26,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165117253] [2022-07-21 05:42:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:42:26,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:42:26,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:42:26,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:42:26,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:42:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:42:26,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 05:42:26,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:42:27,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:42:27,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:42:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:42:28,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165117253] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:42:28,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:42:28,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-07-21 05:42:28,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583635657] [2022-07-21 05:42:28,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:42:28,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-21 05:42:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:42:28,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-21 05:42:28,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=878, Unknown=0, NotChecked=0, Total=992 [2022-07-21 05:42:28,723 INFO L87 Difference]: Start difference. First operand 31328 states and 39957 transitions. Second operand has 32 states, 32 states have (on average 8.0) internal successors, (256), 31 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)