./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.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_opt-floodmax.3.4.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 f80bfa5d5133b0a22059cd1d412c5ee55e27da1e07175dcd83a431b56441bb30 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:15:59,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:15:59,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:15:59,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:15:59,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:15:59,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:15:59,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:15:59,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:15:59,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:15:59,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:15:59,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:15:59,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:15:59,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:15:59,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:15:59,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:15:59,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:15:59,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:15:59,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:15:59,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:15:59,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:15:59,750 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:15:59,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:15:59,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:15:59,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:15:59,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:15:59,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:15:59,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:15:59,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:15:59,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:15:59,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:15:59,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:15:59,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:15:59,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:15:59,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:15:59,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:15:59,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:15:59,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:15:59,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:15:59,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:15:59,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:15:59,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:15:59,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:15:59,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:15:59,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:15:59,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:15:59,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:15:59,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:15:59,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:15:59,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:15:59,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:15:59,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:15:59,799 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:15:59,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:15:59,800 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:15:59,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:15:59,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:15:59,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:15:59,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:15:59,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:15:59,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:15:59,801 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:15:59,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:15:59,802 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:15:59,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:15:59,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:15:59,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:15:59,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:15:59,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:15:59,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:15:59,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:15:59,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:15:59,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:15:59,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:15:59,804 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:15:59,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:15:59,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:15:59,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f80bfa5d5133b0a22059cd1d412c5ee55e27da1e07175dcd83a431b56441bb30 [2022-07-21 06:16:00,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:16:00,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:16:00,101 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:16:00,102 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:16:00,103 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:16:00,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-21 06:16:00,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778a91a73/81bce1339e7f4b7280a5d50f7a86e504/FLAGa4aef4b9a [2022-07-21 06:16:00,627 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:16:00,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-21 06:16:00,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778a91a73/81bce1339e7f4b7280a5d50f7a86e504/FLAGa4aef4b9a [2022-07-21 06:16:00,981 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/778a91a73/81bce1339e7f4b7280a5d50f7a86e504 [2022-07-21 06:16:00,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:16:00,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:16:00,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:16:00,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:16:00,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:16:00,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:16:00" (1/1) ... [2022-07-21 06:16:00,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5971239a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:00, skipping insertion in model container [2022-07-21 06:16:00,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:16:00" (1/1) ... [2022-07-21 06:16:00,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:16:01,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:16:01,324 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2022-07-21 06:16:01,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:16:01,412 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:16:01,488 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_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15542,15555] [2022-07-21 06:16:01,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:16:01,549 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:16:01,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01 WrapperNode [2022-07-21 06:16:01,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:16:01,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:16:01,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:16:01,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:16:01,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,613 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1264 [2022-07-21 06:16:01,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:16:01,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:16:01,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:16:01,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:16:01,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:16:01,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:16:01,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:16:01,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:16:01,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (1/1) ... [2022-07-21 06:16:01,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:16:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:16:01,675 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 06:16:01,676 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 06:16:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:16:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:16:01,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:16:01,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:16:01,876 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:16:01,877 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:16:02,601 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:16:02,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:16:02,612 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 06:16:02,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:16:02 BoogieIcfgContainer [2022-07-21 06:16:02,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:16:02,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:16:02,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:16:02,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:16:02,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:16:00" (1/3) ... [2022-07-21 06:16:02,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5fd6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:16:02, skipping insertion in model container [2022-07-21 06:16:02,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:16:01" (2/3) ... [2022-07-21 06:16:02,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5fd6b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:16:02, skipping insertion in model container [2022-07-21 06:16:02,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:16:02" (3/3) ... [2022-07-21 06:16:02,619 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-07-21 06:16:02,628 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:16:02,628 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 06:16:02,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:16:02,685 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@42cbeb3c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76e43e3 [2022-07-21 06:16:02,685 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 06:16:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 1.779503105590062) internal successors, (573), 323 states have internal predecessors, (573), 0 states have call successors, (0), 0 states 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 06:16:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 06:16:02,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:02,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:02,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash 731422854, now seen corresponding path program 1 times [2022-07-21 06:16:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:02,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978535812] [2022-07-21 06:16:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:03,165 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 06:16:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978535812] [2022-07-21 06:16:03,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978535812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:03,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:03,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:03,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987174868] [2022-07-21 06:16:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:03,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:03,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:03,201 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 1.779503105590062) internal successors, (573), 323 states have internal predecessors, (573), 0 states have call successors, (0), 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 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 06:16:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:03,365 INFO L93 Difference]: Finished difference Result 944 states and 1672 transitions. [2022-07-21 06:16:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:03,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-07-21 06:16:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:03,379 INFO L225 Difference]: With dead ends: 944 [2022-07-21 06:16:03,380 INFO L226 Difference]: Without dead ends: 623 [2022-07-21 06:16:03,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:03,385 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 1283 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:03,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 1412 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:16:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-07-21 06:16:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 621. [2022-07-21 06:16:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 1.4580645161290322) internal successors, (904), 620 states have internal predecessors, (904), 0 states have call successors, (0), 0 states 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 06:16:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 904 transitions. [2022-07-21 06:16:03,476 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 904 transitions. Word has length 150 [2022-07-21 06:16:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:03,476 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 904 transitions. [2022-07-21 06:16:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 06:16:03,477 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 904 transitions. [2022-07-21 06:16:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-21 06:16:03,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:03,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:03,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:16:03,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1954150630, now seen corresponding path program 1 times [2022-07-21 06:16:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:03,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775601641] [2022-07-21 06:16:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:03,543 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 06:16:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:03,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775601641] [2022-07-21 06:16:03,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775601641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:03,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:03,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666318617] [2022-07-21 06:16:03,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:03,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:03,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:03,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:03,551 INFO L87 Difference]: Start difference. First operand 621 states and 904 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 06:16:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:03,617 INFO L93 Difference]: Finished difference Result 1825 states and 2650 transitions. [2022-07-21 06:16:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:03,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2022-07-21 06:16:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:03,623 INFO L225 Difference]: With dead ends: 1825 [2022-07-21 06:16:03,623 INFO L226 Difference]: Without dead ends: 1232 [2022-07-21 06:16:03,629 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 06:16:03,630 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 461 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:03,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1198 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2022-07-21 06:16:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 623. [2022-07-21 06:16:03,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.4565916398713827) internal successors, (906), 622 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 06:16:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 906 transitions. [2022-07-21 06:16:03,689 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 906 transitions. Word has length 151 [2022-07-21 06:16:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:03,690 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 906 transitions. [2022-07-21 06:16:03,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 06:16:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 906 transitions. [2022-07-21 06:16:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 06:16:03,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:03,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:03,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:16:03,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:03,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:03,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1787410567, now seen corresponding path program 1 times [2022-07-21 06:16:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:03,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629521447] [2022-07-21 06:16:03,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:03,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:03,857 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 06:16:03,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:03,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629521447] [2022-07-21 06:16:03,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629521447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:03,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:03,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:03,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218136020] [2022-07-21 06:16:03,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:03,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:03,861 INFO L87 Difference]: Start difference. First operand 623 states and 906 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 06:16:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:03,980 INFO L93 Difference]: Finished difference Result 1779 states and 2570 transitions. [2022-07-21 06:16:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2022-07-21 06:16:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:03,984 INFO L225 Difference]: With dead ends: 1779 [2022-07-21 06:16:03,984 INFO L226 Difference]: Without dead ends: 1186 [2022-07-21 06:16:03,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:03,990 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 931 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:03,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1203 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-07-21 06:16:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1184. [2022-07-21 06:16:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 1.433643279797126) internal successors, (1696), 1183 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 06:16:04,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1696 transitions. [2022-07-21 06:16:04,069 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1696 transitions. Word has length 152 [2022-07-21 06:16:04,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:04,070 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1696 transitions. [2022-07-21 06:16:04,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 06:16:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1696 transitions. [2022-07-21 06:16:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 06:16:04,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:04,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:04,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:16:04,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:04,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:04,074 INFO L85 PathProgramCache]: Analyzing trace with hash -672172421, now seen corresponding path program 1 times [2022-07-21 06:16:04,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:04,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753239770] [2022-07-21 06:16:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:04,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:04,132 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 06:16:04,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:04,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753239770] [2022-07-21 06:16:04,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753239770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:04,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:04,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:04,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552994806] [2022-07-21 06:16:04,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:04,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:04,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:04,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:04,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:04,134 INFO L87 Difference]: Start difference. First operand 1184 states and 1696 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 06:16:04,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:04,300 INFO L93 Difference]: Finished difference Result 3476 states and 4968 transitions. [2022-07-21 06:16:04,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:04,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-21 06:16:04,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:04,307 INFO L225 Difference]: With dead ends: 3476 [2022-07-21 06:16:04,307 INFO L226 Difference]: Without dead ends: 2336 [2022-07-21 06:16:04,309 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 06:16:04,310 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 447 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:04,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1379 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-07-21 06:16:04,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1188. [2022-07-21 06:16:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1187 states have (on average 1.4321819713563606) internal successors, (1700), 1187 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states 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 06:16:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1700 transitions. [2022-07-21 06:16:04,381 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1700 transitions. Word has length 153 [2022-07-21 06:16:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:04,382 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1700 transitions. [2022-07-21 06:16:04,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 06:16:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1700 transitions. [2022-07-21 06:16:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 06:16:04,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:04,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:04,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:16:04,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash 540119633, now seen corresponding path program 1 times [2022-07-21 06:16:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96065450] [2022-07-21 06:16:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:04,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:04,444 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 06:16:04,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:04,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96065450] [2022-07-21 06:16:04,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96065450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:04,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:04,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158554395] [2022-07-21 06:16:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:04,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:04,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:04,448 INFO L87 Difference]: Start difference. First operand 1188 states and 1700 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 06:16:04,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:04,594 INFO L93 Difference]: Finished difference Result 3124 states and 4492 transitions. [2022-07-21 06:16:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:04,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-07-21 06:16:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:04,601 INFO L225 Difference]: With dead ends: 3124 [2022-07-21 06:16:04,601 INFO L226 Difference]: Without dead ends: 2272 [2022-07-21 06:16:04,602 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 06:16:04,603 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 387 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:04,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1304 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2022-07-21 06:16:04,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2270. [2022-07-21 06:16:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2270 states, 2269 states have (on average 1.4138386954605553) internal successors, (3208), 2269 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states 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 06:16:04,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 3208 transitions. [2022-07-21 06:16:04,718 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 3208 transitions. Word has length 154 [2022-07-21 06:16:04,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:04,719 INFO L495 AbstractCegarLoop]: Abstraction has 2270 states and 3208 transitions. [2022-07-21 06:16:04,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 06:16:04,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 3208 transitions. [2022-07-21 06:16:04,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 06:16:04,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:04,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:04,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:16:04,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1047550958, now seen corresponding path program 1 times [2022-07-21 06:16:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418035176] [2022-07-21 06:16:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:04,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:04,822 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 06:16:04,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:04,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418035176] [2022-07-21 06:16:04,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418035176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:04,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:04,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:16:04,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119674139] [2022-07-21 06:16:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:04,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:16:04,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:16:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:04,825 INFO L87 Difference]: Start difference. First operand 2270 states and 3208 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 06:16:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:05,076 INFO L93 Difference]: Finished difference Result 6318 states and 8929 transitions. [2022-07-21 06:16:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-07-21 06:16:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:05,106 INFO L225 Difference]: With dead ends: 6318 [2022-07-21 06:16:05,106 INFO L226 Difference]: Without dead ends: 4085 [2022-07-21 06:16:05,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:05,111 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1375 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:05,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1197 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:16:05,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2022-07-21 06:16:05,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 4083. [2022-07-21 06:16:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4083 states, 4082 states have (on average 1.4017638412542872) internal successors, (5722), 4082 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states 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 06:16:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4083 states to 4083 states and 5722 transitions. [2022-07-21 06:16:05,345 INFO L78 Accepts]: Start accepts. Automaton has 4083 states and 5722 transitions. Word has length 154 [2022-07-21 06:16:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:05,345 INFO L495 AbstractCegarLoop]: Abstraction has 4083 states and 5722 transitions. [2022-07-21 06:16:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 06:16:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4083 states and 5722 transitions. [2022-07-21 06:16:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 06:16:05,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:05,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:16:05,350 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1357265656, now seen corresponding path program 1 times [2022-07-21 06:16:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:05,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227648699] [2022-07-21 06:16:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:05,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:05,459 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 06:16:05,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:05,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227648699] [2022-07-21 06:16:05,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227648699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:05,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:05,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:05,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625991407] [2022-07-21 06:16:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:05,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:05,463 INFO L87 Difference]: Start difference. First operand 4083 states and 5722 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 06:16:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:05,803 INFO L93 Difference]: Finished difference Result 8434 states and 11732 transitions. [2022-07-21 06:16:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-07-21 06:16:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:05,817 INFO L225 Difference]: With dead ends: 8434 [2022-07-21 06:16:05,817 INFO L226 Difference]: Without dead ends: 4468 [2022-07-21 06:16:05,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:05,824 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 924 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:05,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1183 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2022-07-21 06:16:06,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 4311. [2022-07-21 06:16:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4311 states, 4310 states have (on average 1.3870069605568445) internal successors, (5978), 4310 states have internal predecessors, (5978), 0 states have call successors, (0), 0 states 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 06:16:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 5978 transitions. [2022-07-21 06:16:06,209 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 5978 transitions. Word has length 154 [2022-07-21 06:16:06,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:06,209 INFO L495 AbstractCegarLoop]: Abstraction has 4311 states and 5978 transitions. [2022-07-21 06:16:06,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 06:16:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 5978 transitions. [2022-07-21 06:16:06,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-21 06:16:06,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:06,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:06,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:16:06,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:06,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:06,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1903211100, now seen corresponding path program 1 times [2022-07-21 06:16:06,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:06,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885442298] [2022-07-21 06:16:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:06,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:06,244 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 06:16:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:06,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885442298] [2022-07-21 06:16:06,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885442298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:06,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:06,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:06,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97231626] [2022-07-21 06:16:06,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:06,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:06,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:06,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:06,245 INFO L87 Difference]: Start difference. First operand 4311 states and 5978 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 06:16:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:06,704 INFO L93 Difference]: Finished difference Result 12199 states and 16992 transitions. [2022-07-21 06:16:06,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:06,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-07-21 06:16:06,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:06,729 INFO L225 Difference]: With dead ends: 12199 [2022-07-21 06:16:06,729 INFO L226 Difference]: Without dead ends: 8497 [2022-07-21 06:16:06,735 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 06:16:06,735 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 433 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:06,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1057 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8497 states. [2022-07-21 06:16:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8497 to 4327. [2022-07-21 06:16:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 4326 states have (on average 1.3855755894590847) internal successors, (5994), 4326 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states 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 06:16:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 5994 transitions. [2022-07-21 06:16:07,120 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 5994 transitions. Word has length 155 [2022-07-21 06:16:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:07,121 INFO L495 AbstractCegarLoop]: Abstraction has 4327 states and 5994 transitions. [2022-07-21 06:16:07,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 06:16:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 5994 transitions. [2022-07-21 06:16:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 06:16:07,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:07,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:07,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 06:16:07,129 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:07,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:07,130 INFO L85 PathProgramCache]: Analyzing trace with hash -347339255, now seen corresponding path program 1 times [2022-07-21 06:16:07,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:07,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712945731] [2022-07-21 06:16:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:07,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:16:07,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:07,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712945731] [2022-07-21 06:16:07,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712945731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:07,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:07,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40124026] [2022-07-21 06:16:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:07,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:07,223 INFO L87 Difference]: Start difference. First operand 4327 states and 5994 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 06:16:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:07,578 INFO L93 Difference]: Finished difference Result 8644 states and 11974 transitions. [2022-07-21 06:16:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:07,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-07-21 06:16:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:07,590 INFO L225 Difference]: With dead ends: 8644 [2022-07-21 06:16:07,590 INFO L226 Difference]: Without dead ends: 4325 [2022-07-21 06:16:07,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:07,596 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 65 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:07,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1449 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:07,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2022-07-21 06:16:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4325. [2022-07-21 06:16:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4325 states, 4324 states have (on average 1.3852913968547642) internal successors, (5990), 4324 states have internal predecessors, (5990), 0 states have call successors, (0), 0 states 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 06:16:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 5990 transitions. [2022-07-21 06:16:07,938 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 5990 transitions. Word has length 156 [2022-07-21 06:16:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:07,939 INFO L495 AbstractCegarLoop]: Abstraction has 4325 states and 5990 transitions. [2022-07-21 06:16:07,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 06:16:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 5990 transitions. [2022-07-21 06:16:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 06:16:07,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:07,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:07,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 06:16:07,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 681641518, now seen corresponding path program 1 times [2022-07-21 06:16:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:07,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477269057] [2022-07-21 06:16:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:07,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:07,986 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 06:16:07,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:07,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477269057] [2022-07-21 06:16:07,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477269057] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:07,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:07,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990825017] [2022-07-21 06:16:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:07,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:07,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:07,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:07,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:07,988 INFO L87 Difference]: Start difference. First operand 4325 states and 5990 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 06:16:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:08,350 INFO L93 Difference]: Finished difference Result 9492 states and 13249 transitions. [2022-07-21 06:16:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:08,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-07-21 06:16:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:08,370 INFO L225 Difference]: With dead ends: 9492 [2022-07-21 06:16:08,370 INFO L226 Difference]: Without dead ends: 6394 [2022-07-21 06:16:08,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:08,377 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 392 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:08,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1303 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6394 states. [2022-07-21 06:16:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 6392. [2022-07-21 06:16:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6392 states, 6391 states have (on average 1.3630104834924113) internal successors, (8711), 6391 states have internal predecessors, (8711), 0 states have call successors, (0), 0 states 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 06:16:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6392 states to 6392 states and 8711 transitions. [2022-07-21 06:16:08,775 INFO L78 Accepts]: Start accepts. Automaton has 6392 states and 8711 transitions. Word has length 156 [2022-07-21 06:16:08,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:08,775 INFO L495 AbstractCegarLoop]: Abstraction has 6392 states and 8711 transitions. [2022-07-21 06:16:08,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 06:16:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6392 states and 8711 transitions. [2022-07-21 06:16:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-21 06:16:08,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:08,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:08,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 06:16:08,782 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1703352107, now seen corresponding path program 1 times [2022-07-21 06:16:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:08,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922786645] [2022-07-21 06:16:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:08,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:08,812 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 06:16:08,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:08,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922786645] [2022-07-21 06:16:08,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922786645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:08,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:08,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102624847] [2022-07-21 06:16:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:08,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:08,814 INFO L87 Difference]: Start difference. First operand 6392 states and 8711 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 06:16:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:09,313 INFO L93 Difference]: Finished difference Result 13132 states and 18577 transitions. [2022-07-21 06:16:09,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:09,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-07-21 06:16:09,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:09,325 INFO L225 Difference]: With dead ends: 13132 [2022-07-21 06:16:09,325 INFO L226 Difference]: Without dead ends: 7962 [2022-07-21 06:16:09,332 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 06:16:09,332 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 225 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:09,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 949 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2022-07-21 06:16:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 7864. [2022-07-21 06:16:09,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7864 states, 7863 states have (on average 1.404934503370215) internal successors, (11047), 7863 states have internal predecessors, (11047), 0 states have call successors, (0), 0 states 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 06:16:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7864 states to 7864 states and 11047 transitions. [2022-07-21 06:16:09,978 INFO L78 Accepts]: Start accepts. Automaton has 7864 states and 11047 transitions. Word has length 157 [2022-07-21 06:16:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:09,978 INFO L495 AbstractCegarLoop]: Abstraction has 7864 states and 11047 transitions. [2022-07-21 06:16:09,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 06:16:09,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7864 states and 11047 transitions. [2022-07-21 06:16:09,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 06:16:09,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:09,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:09,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 06:16:09,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:09,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1332410921, now seen corresponding path program 1 times [2022-07-21 06:16:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:09,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552110181] [2022-07-21 06:16:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:10,114 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 06:16:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:10,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552110181] [2022-07-21 06:16:10,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552110181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:10,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:10,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:16:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27768625] [2022-07-21 06:16:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 06:16:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 06:16:10,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:16:10,115 INFO L87 Difference]: Start difference. First operand 7864 states and 11047 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 06:16:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:12,054 INFO L93 Difference]: Finished difference Result 21257 states and 31470 transitions. [2022-07-21 06:16:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 06:16:12,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-07-21 06:16:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:12,088 INFO L225 Difference]: With dead ends: 21257 [2022-07-21 06:16:12,088 INFO L226 Difference]: Without dead ends: 15606 [2022-07-21 06:16:12,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:16:12,097 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 5506 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5506 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:12,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5506 Valid, 1180 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 06:16:12,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15606 states. [2022-07-21 06:16:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15606 to 9376. [2022-07-21 06:16:12,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9376 states, 9375 states have (on average 1.4113066666666667) internal successors, (13231), 9375 states have internal predecessors, (13231), 0 states have call successors, (0), 0 states 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 06:16:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9376 states to 9376 states and 13231 transitions. [2022-07-21 06:16:12,936 INFO L78 Accepts]: Start accepts. Automaton has 9376 states and 13231 transitions. Word has length 160 [2022-07-21 06:16:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:12,936 INFO L495 AbstractCegarLoop]: Abstraction has 9376 states and 13231 transitions. [2022-07-21 06:16:12,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 06:16:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 9376 states and 13231 transitions. [2022-07-21 06:16:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 06:16:12,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:12,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:12,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 06:16:12,946 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash 341763621, now seen corresponding path program 1 times [2022-07-21 06:16:12,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:12,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674118502] [2022-07-21 06:16:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:12,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:13,058 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 06:16:13,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:13,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674118502] [2022-07-21 06:16:13,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674118502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:13,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:13,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:13,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463547568] [2022-07-21 06:16:13,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:13,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:13,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:13,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:13,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:13,059 INFO L87 Difference]: Start difference. First operand 9376 states and 13231 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 06:16:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:14,853 INFO L93 Difference]: Finished difference Result 23981 states and 34093 transitions. [2022-07-21 06:16:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-07-21 06:16:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:14,892 INFO L225 Difference]: With dead ends: 23981 [2022-07-21 06:16:14,893 INFO L226 Difference]: Without dead ends: 14959 [2022-07-21 06:16:14,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:14,911 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 914 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:14,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1202 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14959 states. [2022-07-21 06:16:17,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14959 to 14957. [2022-07-21 06:16:17,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14957 states, 14956 states have (on average 1.4087991441561916) internal successors, (21070), 14956 states have internal predecessors, (21070), 0 states have call successors, (0), 0 states 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 06:16:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14957 states to 14957 states and 21070 transitions. [2022-07-21 06:16:17,178 INFO L78 Accepts]: Start accepts. Automaton has 14957 states and 21070 transitions. Word has length 160 [2022-07-21 06:16:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:17,178 INFO L495 AbstractCegarLoop]: Abstraction has 14957 states and 21070 transitions. [2022-07-21 06:16:17,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 06:16:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 14957 states and 21070 transitions. [2022-07-21 06:16:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 06:16:17,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:17,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 06:16:17,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:17,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash -247303654, now seen corresponding path program 1 times [2022-07-21 06:16:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:17,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732861851] [2022-07-21 06:16:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:17,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:17,295 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 06:16:17,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:17,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732861851] [2022-07-21 06:16:17,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732861851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:17,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:17,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:17,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130178156] [2022-07-21 06:16:17,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:17,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:17,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:17,298 INFO L87 Difference]: Start difference. First operand 14957 states and 21070 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 06:16:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:18,964 INFO L93 Difference]: Finished difference Result 23821 states and 33724 transitions. [2022-07-21 06:16:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:18,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-07-21 06:16:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:18,987 INFO L225 Difference]: With dead ends: 23821 [2022-07-21 06:16:18,987 INFO L226 Difference]: Without dead ends: 12165 [2022-07-21 06:16:19,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:19,006 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 53 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:19,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1406 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12165 states. [2022-07-21 06:16:20,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12165 to 12165. [2022-07-21 06:16:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12165 states, 12164 states have (on average 1.4014304505097008) internal successors, (17047), 12164 states have internal predecessors, (17047), 0 states have call successors, (0), 0 states 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 06:16:20,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12165 states to 12165 states and 17047 transitions. [2022-07-21 06:16:20,778 INFO L78 Accepts]: Start accepts. Automaton has 12165 states and 17047 transitions. Word has length 162 [2022-07-21 06:16:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:20,779 INFO L495 AbstractCegarLoop]: Abstraction has 12165 states and 17047 transitions. [2022-07-21 06:16:20,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 06:16:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 12165 states and 17047 transitions. [2022-07-21 06:16:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 06:16:20,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:20,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:20,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 06:16:20,792 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:20,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1747884219, now seen corresponding path program 1 times [2022-07-21 06:16:20,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:20,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018390013] [2022-07-21 06:16:20,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:20,938 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 06:16:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:20,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018390013] [2022-07-21 06:16:20,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018390013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:20,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:20,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75557910] [2022-07-21 06:16:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:20,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:20,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:20,941 INFO L87 Difference]: Start difference. First operand 12165 states and 17047 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 06:16:24,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:24,733 INFO L93 Difference]: Finished difference Result 28477 states and 41489 transitions. [2022-07-21 06:16:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:24,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-07-21 06:16:24,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:24,779 INFO L225 Difference]: With dead ends: 28477 [2022-07-21 06:16:24,779 INFO L226 Difference]: Without dead ends: 21507 [2022-07-21 06:16:24,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:24,802 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 780 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:24,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 884 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:16:24,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21507 states. [2022-07-21 06:16:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21507 to 21505. [2022-07-21 06:16:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21505 states, 21504 states have (on average 1.422758556547619) internal successors, (30595), 21504 states have internal predecessors, (30595), 0 states have call successors, (0), 0 states 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 06:16:28,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21505 states to 21505 states and 30595 transitions. [2022-07-21 06:16:28,101 INFO L78 Accepts]: Start accepts. Automaton has 21505 states and 30595 transitions. Word has length 166 [2022-07-21 06:16:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:28,101 INFO L495 AbstractCegarLoop]: Abstraction has 21505 states and 30595 transitions. [2022-07-21 06:16:28,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 06:16:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 21505 states and 30595 transitions. [2022-07-21 06:16:28,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 06:16:28,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:28,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:28,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 06:16:28,116 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:28,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1264928814, now seen corresponding path program 1 times [2022-07-21 06:16:28,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:28,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519528734] [2022-07-21 06:16:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:28,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:28,228 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 06:16:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:28,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519528734] [2022-07-21 06:16:28,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519528734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:28,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:28,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:28,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134373788] [2022-07-21 06:16:28,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:28,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:28,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:28,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:28,233 INFO L87 Difference]: Start difference. First operand 21505 states and 30595 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 06:16:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:30,526 INFO L93 Difference]: Finished difference Result 36044 states and 51188 transitions. [2022-07-21 06:16:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:30,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-07-21 06:16:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:30,559 INFO L225 Difference]: With dead ends: 36044 [2022-07-21 06:16:30,559 INFO L226 Difference]: Without dead ends: 14609 [2022-07-21 06:16:30,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:30,598 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 43 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:30,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1390 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14609 states. [2022-07-21 06:16:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14609 to 14609. [2022-07-21 06:16:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14609 states, 14608 states have (on average 1.4155941949616648) internal successors, (20679), 14608 states have internal predecessors, (20679), 0 states have call successors, (0), 0 states 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 06:16:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14609 states to 14609 states and 20679 transitions. [2022-07-21 06:16:32,957 INFO L78 Accepts]: Start accepts. Automaton has 14609 states and 20679 transitions. Word has length 166 [2022-07-21 06:16:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:32,957 INFO L495 AbstractCegarLoop]: Abstraction has 14609 states and 20679 transitions. [2022-07-21 06:16:32,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 06:16:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 14609 states and 20679 transitions. [2022-07-21 06:16:32,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-21 06:16:32,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:32,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:32,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 06:16:32,966 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:32,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:32,966 INFO L85 PathProgramCache]: Analyzing trace with hash -68040980, now seen corresponding path program 1 times [2022-07-21 06:16:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:32,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515250447] [2022-07-21 06:16:32,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:32,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:33,012 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 06:16:33,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:33,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515250447] [2022-07-21 06:16:33,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515250447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:33,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:33,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:33,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175544378] [2022-07-21 06:16:33,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:33,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:33,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:33,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:33,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:33,015 INFO L87 Difference]: Start difference. First operand 14609 states and 20679 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 06:16:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:36,975 INFO L93 Difference]: Finished difference Result 37738 states and 54497 transitions. [2022-07-21 06:16:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 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 168 [2022-07-21 06:16:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:37,028 INFO L225 Difference]: With dead ends: 37738 [2022-07-21 06:16:37,028 INFO L226 Difference]: Without dead ends: 24151 [2022-07-21 06:16:37,050 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 06:16:37,050 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 290 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:37,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 960 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24151 states. [2022-07-21 06:16:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24151 to 21851. [2022-07-21 06:16:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21851 states, 21850 states have (on average 1.4584439359267733) internal successors, (31867), 21850 states have internal predecessors, (31867), 0 states have call successors, (0), 0 states 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 06:16:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21851 states to 21851 states and 31867 transitions. [2022-07-21 06:16:40,813 INFO L78 Accepts]: Start accepts. Automaton has 21851 states and 31867 transitions. Word has length 168 [2022-07-21 06:16:40,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:40,814 INFO L495 AbstractCegarLoop]: Abstraction has 21851 states and 31867 transitions. [2022-07-21 06:16:40,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 06:16:40,814 INFO L276 IsEmpty]: Start isEmpty. Operand 21851 states and 31867 transitions. [2022-07-21 06:16:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-21 06:16:40,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:40,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:40,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 06:16:40,824 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:40,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:40,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1403451150, now seen corresponding path program 1 times [2022-07-21 06:16:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:40,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135645308] [2022-07-21 06:16:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:40,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:40,923 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 06:16:40,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:40,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135645308] [2022-07-21 06:16:40,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135645308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:40,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:40,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 06:16:40,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348920501] [2022-07-21 06:16:40,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:40,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:16:40,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:16:40,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:40,925 INFO L87 Difference]: Start difference. First operand 21851 states and 31867 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 06:16:47,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:47,067 INFO L93 Difference]: Finished difference Result 52906 states and 78194 transitions. [2022-07-21 06:16:47,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:16:47,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2022-07-21 06:16:47,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:47,153 INFO L225 Difference]: With dead ends: 52906 [2022-07-21 06:16:47,153 INFO L226 Difference]: Without dead ends: 35233 [2022-07-21 06:16:47,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 06:16:47,189 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 284 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:47,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 933 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35233 states. [2022-07-21 06:16:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35233 to 33091. [2022-07-21 06:16:53,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33091 states, 33090 states have (on average 1.4810818978543367) internal successors, (49009), 33090 states have internal predecessors, (49009), 0 states have call successors, (0), 0 states 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 06:16:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33091 states to 33091 states and 49009 transitions. [2022-07-21 06:16:53,390 INFO L78 Accepts]: Start accepts. Automaton has 33091 states and 49009 transitions. Word has length 171 [2022-07-21 06:16:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:16:53,390 INFO L495 AbstractCegarLoop]: Abstraction has 33091 states and 49009 transitions. [2022-07-21 06:16:53,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states 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 06:16:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 33091 states and 49009 transitions. [2022-07-21 06:16:53,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-21 06:16:53,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:16:53,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:16:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 06:16:53,399 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:16:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:16:53,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1362784471, now seen corresponding path program 1 times [2022-07-21 06:16:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:16:53,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646492094] [2022-07-21 06:16:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:16:53,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:16:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:16:53,530 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 06:16:53,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:16:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646492094] [2022-07-21 06:16:53,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646492094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:16:53,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:16:53,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:16:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529979546] [2022-07-21 06:16:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:16:53,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:16:53,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:16:53,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:16:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:16:53,534 INFO L87 Difference]: Start difference. First operand 33091 states and 49009 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 06:16:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:16:59,414 INFO L93 Difference]: Finished difference Result 57736 states and 85419 transitions. [2022-07-21 06:16:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:16:59,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-07-21 06:16:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:16:59,496 INFO L225 Difference]: With dead ends: 57736 [2022-07-21 06:16:59,496 INFO L226 Difference]: Without dead ends: 33081 [2022-07-21 06:16:59,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:16:59,527 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 23 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:16:59,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1360 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:16:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33081 states. [2022-07-21 06:17:05,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33081 to 33081. [2022-07-21 06:17:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33081 states, 33080 states have (on average 1.4810761789600968) internal successors, (48994), 33080 states have internal predecessors, (48994), 0 states have call successors, (0), 0 states 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 06:17:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33081 states to 33081 states and 48994 transitions. [2022-07-21 06:17:05,928 INFO L78 Accepts]: Start accepts. Automaton has 33081 states and 48994 transitions. Word has length 173 [2022-07-21 06:17:05,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:17:05,929 INFO L495 AbstractCegarLoop]: Abstraction has 33081 states and 48994 transitions. [2022-07-21 06:17:05,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 06:17:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 33081 states and 48994 transitions. [2022-07-21 06:17:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-21 06:17:05,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:17:05,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:05,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 06:17:05,938 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:17:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:17:05,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1128113098, now seen corresponding path program 1 times [2022-07-21 06:17:05,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:17:05,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076047632] [2022-07-21 06:17:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:17:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:17:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:17:06,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:17:06,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:17:06,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076047632] [2022-07-21 06:17:06,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076047632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:17:06,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:17:06,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:17:06,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136421897] [2022-07-21 06:17:06,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:17:06,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:17:06,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:17:06,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:17:06,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:17:06,121 INFO L87 Difference]: Start difference. First operand 33081 states and 48994 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 06:17:11,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:17:11,910 INFO L93 Difference]: Finished difference Result 63182 states and 93572 transitions. [2022-07-21 06:17:11,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:17:11,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-07-21 06:17:11,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:17:11,991 INFO L225 Difference]: With dead ends: 63182 [2022-07-21 06:17:11,992 INFO L226 Difference]: Without dead ends: 30356 [2022-07-21 06:17:12,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:17:12,034 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 813 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:17:12,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1491 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:17:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30356 states. [2022-07-21 06:17:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30356 to 30199. [2022-07-21 06:17:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30199 states, 30198 states have (on average 1.4792370355652693) internal successors, (44670), 30198 states have internal predecessors, (44670), 0 states have call successors, (0), 0 states 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 06:17:17,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30199 states to 30199 states and 44670 transitions. [2022-07-21 06:17:17,958 INFO L78 Accepts]: Start accepts. Automaton has 30199 states and 44670 transitions. Word has length 173 [2022-07-21 06:17:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:17:17,959 INFO L495 AbstractCegarLoop]: Abstraction has 30199 states and 44670 transitions. [2022-07-21 06:17:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 06:17:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 30199 states and 44670 transitions. [2022-07-21 06:17:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 06:17:17,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:17:17,966 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:17,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 06:17:17,966 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:17:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:17:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash -268733951, now seen corresponding path program 1 times [2022-07-21 06:17:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:17:17,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080187315] [2022-07-21 06:17:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:17:17,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:17:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:17:18,060 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 06:17:18,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:17:18,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080187315] [2022-07-21 06:17:18,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080187315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:17:18,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:17:18,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:17:18,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182492920] [2022-07-21 06:17:18,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:17:18,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:17:18,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:17:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:17:18,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:17:18,064 INFO L87 Difference]: Start difference. First operand 30199 states and 44670 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:17:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:17:24,136 INFO L93 Difference]: Finished difference Result 59150 states and 87936 transitions. [2022-07-21 06:17:24,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 06:17:24,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-07-21 06:17:24,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:17:24,226 INFO L225 Difference]: With dead ends: 59150 [2022-07-21 06:17:24,227 INFO L226 Difference]: Without dead ends: 30199 [2022-07-21 06:17:24,263 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 06:17:24,264 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1145 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:17:24,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 428 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:17:24,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30199 states. [2022-07-21 06:17:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30199 to 30199. [2022-07-21 06:17:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30199 states, 30198 states have (on average 1.4673819458242268) internal successors, (44312), 30198 states have internal predecessors, (44312), 0 states have call successors, (0), 0 states 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 06:17:30,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30199 states to 30199 states and 44312 transitions. [2022-07-21 06:17:30,648 INFO L78 Accepts]: Start accepts. Automaton has 30199 states and 44312 transitions. Word has length 176 [2022-07-21 06:17:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:17:30,648 INFO L495 AbstractCegarLoop]: Abstraction has 30199 states and 44312 transitions. [2022-07-21 06:17:30,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:17:30,649 INFO L276 IsEmpty]: Start isEmpty. Operand 30199 states and 44312 transitions. [2022-07-21 06:17:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 06:17:30,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:17:30,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:30,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 06:17:30,657 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:17:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:17:30,657 INFO L85 PathProgramCache]: Analyzing trace with hash 693497478, now seen corresponding path program 1 times [2022-07-21 06:17:30,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:17:30,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686800542] [2022-07-21 06:17:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:17:30,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:17:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:17:30,792 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 06:17:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:17:30,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686800542] [2022-07-21 06:17:30,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686800542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:17:30,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:17:30,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:17:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258777111] [2022-07-21 06:17:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:17:30,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 06:17:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:17:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 06:17:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:17:30,796 INFO L87 Difference]: Start difference. First operand 30199 states and 44312 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:17:47,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:17:47,563 INFO L93 Difference]: Finished difference Result 100924 states and 148341 transitions. [2022-07-21 06:17:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 06:17:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-07-21 06:17:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:17:47,769 INFO L225 Difference]: With dead ends: 100924 [2022-07-21 06:17:47,770 INFO L226 Difference]: Without dead ends: 71533 [2022-07-21 06:17:47,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:17:47,830 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 4195 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4195 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:17:47,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4195 Valid, 1165 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 06:17:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71533 states. [2022-07-21 06:17:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71533 to 34130. [2022-07-21 06:17:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34130 states, 34129 states have (on average 1.4626563919247562) internal successors, (49919), 34129 states have internal predecessors, (49919), 0 states have call successors, (0), 0 states 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 06:17:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34130 states to 34130 states and 49919 transitions. [2022-07-21 06:17:55,683 INFO L78 Accepts]: Start accepts. Automaton has 34130 states and 49919 transitions. Word has length 176 [2022-07-21 06:17:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:17:55,683 INFO L495 AbstractCegarLoop]: Abstraction has 34130 states and 49919 transitions. [2022-07-21 06:17:55,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 7 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:17:55,683 INFO L276 IsEmpty]: Start isEmpty. Operand 34130 states and 49919 transitions. [2022-07-21 06:17:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 06:17:55,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:17:55,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:17:55,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 06:17:55,689 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:17:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:17:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash -138933417, now seen corresponding path program 1 times [2022-07-21 06:17:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:17:55,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597558608] [2022-07-21 06:17:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:17:55,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:17:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:17:56,786 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 06:17:56,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:17:56,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597558608] [2022-07-21 06:17:56,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597558608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:17:56,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:17:56,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 06:17:56,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339230906] [2022-07-21 06:17:56,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:17:56,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 06:17:56,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:17:56,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 06:17:56,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-21 06:17:56,788 INFO L87 Difference]: Start difference. First operand 34130 states and 49919 transitions. Second operand has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:18:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:32,039 INFO L93 Difference]: Finished difference Result 167415 states and 249350 transitions. [2022-07-21 06:18:32,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 06:18:32,040 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-07-21 06:18:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:32,333 INFO L225 Difference]: With dead ends: 167415 [2022-07-21 06:18:32,333 INFO L226 Difference]: Without dead ends: 151593 [2022-07-21 06:18:32,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 06:18:32,381 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 2265 mSDsluCounter, 8785 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 9584 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:32,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 9584 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2974 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 06:18:32,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151593 states. [2022-07-21 06:18:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151593 to 34690. [2022-07-21 06:18:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34690 states, 34689 states have (on average 1.4579837988987863) internal successors, (50576), 34689 states have internal predecessors, (50576), 0 states have call successors, (0), 0 states 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 06:18:42,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34690 states to 34690 states and 50576 transitions. [2022-07-21 06:18:42,871 INFO L78 Accepts]: Start accepts. Automaton has 34690 states and 50576 transitions. Word has length 176 [2022-07-21 06:18:42,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:18:42,871 INFO L495 AbstractCegarLoop]: Abstraction has 34690 states and 50576 transitions. [2022-07-21 06:18:42,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.380952380952381) internal successors, (176), 21 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:18:42,872 INFO L276 IsEmpty]: Start isEmpty. Operand 34690 states and 50576 transitions. [2022-07-21 06:18:42,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 06:18:42,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:18:42,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:18:42,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 06:18:42,878 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:18:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:18:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1933329014, now seen corresponding path program 1 times [2022-07-21 06:18:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:18:42,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258865394] [2022-07-21 06:18:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:18:42,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:18:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:18:42,937 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 06:18:42,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:18:42,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258865394] [2022-07-21 06:18:42,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258865394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:18:42,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:18:42,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:18:42,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832536461] [2022-07-21 06:18:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:18:42,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:18:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:18:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:18:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:18:42,941 INFO L87 Difference]: Start difference. First operand 34690 states and 50576 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:18:56,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:18:56,728 INFO L93 Difference]: Finished difference Result 64061 states and 94919 transitions. [2022-07-21 06:18:56,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:18:56,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-07-21 06:18:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:18:56,803 INFO L225 Difference]: With dead ends: 64061 [2022-07-21 06:18:56,803 INFO L226 Difference]: Without dead ends: 48912 [2022-07-21 06:18:56,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:18:56,819 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 351 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:18:56,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1666 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:18:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48912 states. [2022-07-21 06:19:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48912 to 34413. [2022-07-21 06:19:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34413 states, 34412 states have (on average 1.4601592467743811) internal successors, (50247), 34412 states have internal predecessors, (50247), 0 states have call successors, (0), 0 states 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 06:19:06,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34413 states to 34413 states and 50247 transitions. [2022-07-21 06:19:06,836 INFO L78 Accepts]: Start accepts. Automaton has 34413 states and 50247 transitions. Word has length 176 [2022-07-21 06:19:06,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:19:06,837 INFO L495 AbstractCegarLoop]: Abstraction has 34413 states and 50247 transitions. [2022-07-21 06:19:06,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:19:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 34413 states and 50247 transitions. [2022-07-21 06:19:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 06:19:06,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:19:06,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:19:06,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 06:19:06,845 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:19:06,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:19:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1161890815, now seen corresponding path program 1 times [2022-07-21 06:19:06,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:19:06,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572570466] [2022-07-21 06:19:06,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:19:06,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:19:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:19:06,980 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 06:19:06,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:19:06,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572570466] [2022-07-21 06:19:06,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572570466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:19:06,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:19:06,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 06:19:06,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93287517] [2022-07-21 06:19:06,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:19:06,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 06:19:06,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:19:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 06:19:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:19:06,983 INFO L87 Difference]: Start difference. First operand 34413 states and 50247 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 06:19:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:19:26,248 INFO L93 Difference]: Finished difference Result 95686 states and 142120 transitions. [2022-07-21 06:19:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 06:19:26,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2022-07-21 06:19:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:19:26,397 INFO L225 Difference]: With dead ends: 95686 [2022-07-21 06:19:26,397 INFO L226 Difference]: Without dead ends: 66536 [2022-07-21 06:19:26,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-21 06:19:26,439 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 726 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:19:26,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 905 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:19:26,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66536 states.