./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2218bd3b5024885ce258db0decccc6cd77d5db224efd54b84e54987ad5abfa77 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:04:34,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:04:34,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:04:34,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:04:34,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:04:34,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:04:34,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:04:34,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:04:34,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:04:34,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:04:34,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:04:34,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:04:34,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:04:34,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:04:34,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:04:34,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:04:34,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:04:34,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:04:34,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:04:34,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:04:34,770 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:04:34,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:04:34,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:04:34,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:04:34,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:04:34,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:04:34,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:04:34,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:04:34,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:04:34,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:04:34,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:04:34,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:04:34,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:04:34,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:04:34,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:04:34,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:04:34,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:04:34,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:04:34,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:04:34,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:04:34,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:04:34,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:04:34,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:04:34,826 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:04:34,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:04:34,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:04:34,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:04:34,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:04:34,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:04:34,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:04:34,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:04:34,829 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:04:34,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:04:34,830 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:04:34,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:04:34,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:04:34,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:04:34,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:04:34,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:04:34,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:04:34,831 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:04:34,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:04:34,832 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:04:34,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:04:34,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:04:34,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:04:34,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:04:34,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:04:34,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:04:34,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:04:34,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:04:34,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:04:34,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:04:34,835 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:04:34,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:04:34,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:04:34,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2218bd3b5024885ce258db0decccc6cd77d5db224efd54b84e54987ad5abfa77 [2022-07-12 07:04:35,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:04:35,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:04:35,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:04:35,089 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:04:35,089 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:04:35,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 07:04:35,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b8b50b6/4af3970b29594d098a9e7611e1fffdb7/FLAGde4d23785 [2022-07-12 07:04:35,506 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:04:35,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 07:04:35,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b8b50b6/4af3970b29594d098a9e7611e1fffdb7/FLAGde4d23785 [2022-07-12 07:04:35,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b8b50b6/4af3970b29594d098a9e7611e1fffdb7 [2022-07-12 07:04:35,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:04:35,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:04:35,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:04:35,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:04:35,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:04:35,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f58f0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35, skipping insertion in model container [2022-07-12 07:04:35,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:04:35,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:04:35,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-07-12 07:04:35,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:04:35,838 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:04:35,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7107,7120] [2022-07-12 07:04:35,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:04:35,922 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:04:35,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35 WrapperNode [2022-07-12 07:04:35,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:04:35,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:04:35,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:04:35,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:04:35,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,978 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 662 [2022-07-12 07:04:35,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:04:35,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:04:35,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:04:35,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:04:35,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:35,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:36,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:36,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:36,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:04:36,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:04:36,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:04:36,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:04:36,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (1/1) ... [2022-07-12 07:04:36,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:04:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:04:36,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 07:04:36,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 07:04:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:04:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:04:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:04:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:04:36,202 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:04:36,204 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:04:36,844 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:04:36,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:04:36,851 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 07:04:36,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:04:36 BoogieIcfgContainer [2022-07-12 07:04:36,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:04:36,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:04:36,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:04:36,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:04:36,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:04:35" (1/3) ... [2022-07-12 07:04:36,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c93d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:04:36, skipping insertion in model container [2022-07-12 07:04:36,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:04:35" (2/3) ... [2022-07-12 07:04:36,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c93d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:04:36, skipping insertion in model container [2022-07-12 07:04:36,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:04:36" (3/3) ... [2022-07-12 07:04:36,863 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-07-12 07:04:36,876 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:04:36,876 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:04:36,941 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:04:36,949 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@71f32046, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a6f3401 [2022-07-12 07:04:36,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:04:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 07:04:36,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:36,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:36,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:36,987 INFO L85 PathProgramCache]: Analyzing trace with hash -113151096, now seen corresponding path program 1 times [2022-07-12 07:04:36,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:36,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350492289] [2022-07-12 07:04:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350492289] [2022-07-12 07:04:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350492289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:37,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:37,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:04:37,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816283787] [2022-07-12 07:04:37,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:37,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:04:37,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:04:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:04:37,424 INFO L87 Difference]: Start difference. First operand has 179 states, 177 states have (on average 1.7175141242937852) internal successors, (304), 178 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:37,608 INFO L93 Difference]: Finished difference Result 639 states and 1034 transitions. [2022-07-12 07:04:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:04:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-12 07:04:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:37,623 INFO L225 Difference]: With dead ends: 639 [2022-07-12 07:04:37,623 INFO L226 Difference]: Without dead ends: 540 [2022-07-12 07:04:37,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:04:37,629 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 1598 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:37,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1598 Valid, 1127 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:04:37,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-07-12 07:04:37,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 274. [2022-07-12 07:04:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.5128205128205128) internal successors, (413), 273 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 413 transitions. [2022-07-12 07:04:37,689 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 413 transitions. Word has length 64 [2022-07-12 07:04:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:37,689 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 413 transitions. [2022-07-12 07:04:37,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 413 transitions. [2022-07-12 07:04:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 07:04:37,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:37,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:37,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:04:37,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:37,693 INFO L85 PathProgramCache]: Analyzing trace with hash 507394196, now seen corresponding path program 1 times [2022-07-12 07:04:37,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:37,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21393506] [2022-07-12 07:04:37,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:37,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21393506] [2022-07-12 07:04:37,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21393506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:37,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:37,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:04:37,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255272361] [2022-07-12 07:04:37,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:37,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:04:37,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:04:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:04:37,857 INFO L87 Difference]: Start difference. First operand 274 states and 413 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:38,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:38,104 INFO L93 Difference]: Finished difference Result 1012 states and 1565 transitions. [2022-07-12 07:04:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:04:38,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-12 07:04:38,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:38,110 INFO L225 Difference]: With dead ends: 1012 [2022-07-12 07:04:38,110 INFO L226 Difference]: Without dead ends: 800 [2022-07-12 07:04:38,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:04:38,114 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 783 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:38,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 897 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:04:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-07-12 07:04:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 794. [2022-07-12 07:04:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.5359394703656999) internal successors, (1218), 793 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1218 transitions. [2022-07-12 07:04:38,223 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1218 transitions. Word has length 65 [2022-07-12 07:04:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:38,224 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1218 transitions. [2022-07-12 07:04:38,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1218 transitions. [2022-07-12 07:04:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:04:38,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:38,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:38,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:04:38,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1175932082, now seen corresponding path program 1 times [2022-07-12 07:04:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:38,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032938180] [2022-07-12 07:04:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:38,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:38,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032938180] [2022-07-12 07:04:38,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032938180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:38,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:38,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:04:38,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823324019] [2022-07-12 07:04:38,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:38,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:04:38,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:38,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:04:38,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:04:38,371 INFO L87 Difference]: Start difference. First operand 794 states and 1218 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:38,702 INFO L93 Difference]: Finished difference Result 2126 states and 3304 transitions. [2022-07-12 07:04:38,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:04:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 07:04:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:38,710 INFO L225 Difference]: With dead ends: 2126 [2022-07-12 07:04:38,711 INFO L226 Difference]: Without dead ends: 1382 [2022-07-12 07:04:38,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:04:38,718 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 997 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:38,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 246 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:04:38,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-07-12 07:04:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1380. [2022-07-12 07:04:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 1.5453226976069616) internal successors, (2131), 1379 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 2131 transitions. [2022-07-12 07:04:38,863 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 2131 transitions. Word has length 66 [2022-07-12 07:04:38,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:38,864 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 2131 transitions. [2022-07-12 07:04:38,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:38,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 2131 transitions. [2022-07-12 07:04:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:04:38,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:38,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:38,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:04:38,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:38,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash 195420080, now seen corresponding path program 1 times [2022-07-12 07:04:38,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:38,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831334951] [2022-07-12 07:04:38,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:38,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:38,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:38,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831334951] [2022-07-12 07:04:38,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831334951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:38,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:38,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:04:38,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874562155] [2022-07-12 07:04:38,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:38,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:04:38,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:04:38,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:04:38,970 INFO L87 Difference]: Start difference. First operand 1380 states and 2131 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:39,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:39,407 INFO L93 Difference]: Finished difference Result 3712 states and 5789 transitions. [2022-07-12 07:04:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:04:39,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 07:04:39,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:39,417 INFO L225 Difference]: With dead ends: 3712 [2022-07-12 07:04:39,417 INFO L226 Difference]: Without dead ends: 2432 [2022-07-12 07:04:39,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:04:39,428 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 923 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:39,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 252 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:04:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-07-12 07:04:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2430. [2022-07-12 07:04:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2429 states have (on average 1.550020584602717) internal successors, (3765), 2429 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 3765 transitions. [2022-07-12 07:04:39,653 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 3765 transitions. Word has length 66 [2022-07-12 07:04:39,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:39,653 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 3765 transitions. [2022-07-12 07:04:39,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:39,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 3765 transitions. [2022-07-12 07:04:39,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:04:39,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:39,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:39,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 07:04:39,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2140991135, now seen corresponding path program 1 times [2022-07-12 07:04:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:39,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33116558] [2022-07-12 07:04:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:39,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:39,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33116558] [2022-07-12 07:04:39,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33116558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:39,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:39,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:04:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25974072] [2022-07-12 07:04:39,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:39,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:04:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:04:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:04:39,714 INFO L87 Difference]: Start difference. First operand 2430 states and 3765 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:40,265 INFO L93 Difference]: Finished difference Result 6933 states and 10800 transitions. [2022-07-12 07:04:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:04:40,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 07:04:40,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:40,282 INFO L225 Difference]: With dead ends: 6933 [2022-07-12 07:04:40,283 INFO L226 Difference]: Without dead ends: 4576 [2022-07-12 07:04:40,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:04:40,289 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 949 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:40,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 250 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 07:04:40,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2022-07-12 07:04:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4574. [2022-07-12 07:04:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 1.5484364749617319) internal successors, (7081), 4573 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 7081 transitions. [2022-07-12 07:04:40,738 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 7081 transitions. Word has length 66 [2022-07-12 07:04:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:40,739 INFO L495 AbstractCegarLoop]: Abstraction has 4574 states and 7081 transitions. [2022-07-12 07:04:40,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:40,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 7081 transitions. [2022-07-12 07:04:40,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 07:04:40,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:40,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:40,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 07:04:40,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:40,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash -472666691, now seen corresponding path program 1 times [2022-07-12 07:04:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:40,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88592678] [2022-07-12 07:04:40,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:40,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:40,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:40,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88592678] [2022-07-12 07:04:40,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88592678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:40,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:40,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:04:40,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862667632] [2022-07-12 07:04:40,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:40,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:04:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:40,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:04:40,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:04:40,791 INFO L87 Difference]: Start difference. First operand 4574 states and 7081 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:41,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:41,721 INFO L93 Difference]: Finished difference Result 13472 states and 20916 transitions. [2022-07-12 07:04:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:04:41,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-12 07:04:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:41,754 INFO L225 Difference]: With dead ends: 13472 [2022-07-12 07:04:41,755 INFO L226 Difference]: Without dead ends: 8932 [2022-07-12 07:04:41,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:04:41,763 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1005 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:41,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 244 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 07:04:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8932 states. [2022-07-12 07:04:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8932 to 8930. [2022-07-12 07:04:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8930 states, 8929 states have (on average 1.540822040542054) internal successors, (13758), 8929 states have internal predecessors, (13758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8930 states to 8930 states and 13758 transitions. [2022-07-12 07:04:42,619 INFO L78 Accepts]: Start accepts. Automaton has 8930 states and 13758 transitions. Word has length 66 [2022-07-12 07:04:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:42,619 INFO L495 AbstractCegarLoop]: Abstraction has 8930 states and 13758 transitions. [2022-07-12 07:04:42,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8930 states and 13758 transitions. [2022-07-12 07:04:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 07:04:42,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:42,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:42,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 07:04:42,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:42,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:42,623 INFO L85 PathProgramCache]: Analyzing trace with hash 545251456, now seen corresponding path program 1 times [2022-07-12 07:04:42,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:42,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295517782] [2022-07-12 07:04:42,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:42,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:42,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:42,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295517782] [2022-07-12 07:04:42,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295517782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:42,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:42,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 07:04:42,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946287596] [2022-07-12 07:04:42,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:42,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 07:04:42,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 07:04:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 07:04:42,725 INFO L87 Difference]: Start difference. First operand 8930 states and 13758 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:44,108 INFO L93 Difference]: Finished difference Result 17508 states and 26911 transitions. [2022-07-12 07:04:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:04:44,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-12 07:04:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:44,169 INFO L225 Difference]: With dead ends: 17508 [2022-07-12 07:04:44,169 INFO L226 Difference]: Without dead ends: 17506 [2022-07-12 07:04:44,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:04:44,177 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 246 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:44,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 987 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:04:44,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17506 states. [2022-07-12 07:04:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17506 to 9186. [2022-07-12 07:04:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9186 states, 9185 states have (on average 1.5257485029940119) internal successors, (14014), 9185 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9186 states to 9186 states and 14014 transitions. [2022-07-12 07:04:45,303 INFO L78 Accepts]: Start accepts. Automaton has 9186 states and 14014 transitions. Word has length 67 [2022-07-12 07:04:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:45,304 INFO L495 AbstractCegarLoop]: Abstraction has 9186 states and 14014 transitions. [2022-07-12 07:04:45,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 9186 states and 14014 transitions. [2022-07-12 07:04:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:04:45,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:45,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:45,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:04:45,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2333062, now seen corresponding path program 1 times [2022-07-12 07:04:45,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:45,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965716444] [2022-07-12 07:04:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:45,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965716444] [2022-07-12 07:04:45,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965716444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:45,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:45,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:04:45,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809078202] [2022-07-12 07:04:45,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:45,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:04:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:04:45,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:04:45,450 INFO L87 Difference]: Start difference. First operand 9186 states and 14014 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:49,222 INFO L93 Difference]: Finished difference Result 41173 states and 62279 transitions. [2022-07-12 07:04:49,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 07:04:49,223 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 07:04:49,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:49,317 INFO L225 Difference]: With dead ends: 41173 [2022-07-12 07:04:49,317 INFO L226 Difference]: Without dead ends: 35359 [2022-07-12 07:04:49,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-12 07:04:49,337 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1717 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:49,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 1151 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 07:04:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35359 states. [2022-07-12 07:04:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35359 to 9319. [2022-07-12 07:04:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9319 states, 9318 states have (on average 1.5227516634470917) internal successors, (14189), 9318 states have internal predecessors, (14189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 14189 transitions. [2022-07-12 07:04:50,943 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 14189 transitions. Word has length 68 [2022-07-12 07:04:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:50,943 INFO L495 AbstractCegarLoop]: Abstraction has 9319 states and 14189 transitions. [2022-07-12 07:04:50,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 14189 transitions. [2022-07-12 07:04:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:04:50,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:50,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:04:50,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:04:50,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash -371480250, now seen corresponding path program 1 times [2022-07-12 07:04:50,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:50,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075330040] [2022-07-12 07:04:50,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:50,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:51,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075330040] [2022-07-12 07:04:51,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075330040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:51,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:51,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:04:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315924819] [2022-07-12 07:04:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:51,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:04:51,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:04:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:04:51,104 INFO L87 Difference]: Start difference. First operand 9319 states and 14189 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:54,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:04:54,730 INFO L93 Difference]: Finished difference Result 31054 states and 47033 transitions. [2022-07-12 07:04:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 07:04:54,735 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 07:04:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:04:54,794 INFO L225 Difference]: With dead ends: 31054 [2022-07-12 07:04:54,794 INFO L226 Difference]: Without dead ends: 29747 [2022-07-12 07:04:54,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-07-12 07:04:54,807 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1787 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 07:04:54,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1764 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 07:04:54,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29747 states. [2022-07-12 07:04:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29747 to 9319. [2022-07-12 07:04:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9319 states, 9318 states have (on average 1.522537025112685) internal successors, (14187), 9318 states have internal predecessors, (14187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9319 states to 9319 states and 14187 transitions. [2022-07-12 07:04:55,962 INFO L78 Accepts]: Start accepts. Automaton has 9319 states and 14187 transitions. Word has length 68 [2022-07-12 07:04:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:04:55,962 INFO L495 AbstractCegarLoop]: Abstraction has 9319 states and 14187 transitions. [2022-07-12 07:04:55,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:04:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 9319 states and 14187 transitions. [2022-07-12 07:04:55,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:04:55,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:04:55,966 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] [2022-07-12 07:04:55,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:04:55,966 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:04:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:04:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2100624742, now seen corresponding path program 1 times [2022-07-12 07:04:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:04:55,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71232696] [2022-07-12 07:04:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:04:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:04:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:04:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:04:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:04:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71232696] [2022-07-12 07:04:56,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71232696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:04:56,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:04:56,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:04:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343821029] [2022-07-12 07:04:56,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:04:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:04:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:04:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:04:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:04:56,112 INFO L87 Difference]: Start difference. First operand 9319 states and 14187 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:00,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:00,372 INFO L93 Difference]: Finished difference Result 33277 states and 50298 transitions. [2022-07-12 07:05:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 07:05:00,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 07:05:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:00,428 INFO L225 Difference]: With dead ends: 33277 [2022-07-12 07:05:00,429 INFO L226 Difference]: Without dead ends: 29700 [2022-07-12 07:05:00,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2022-07-12 07:05:00,450 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1813 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:00,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 1263 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 07:05:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29700 states. [2022-07-12 07:05:01,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29700 to 9542. [2022-07-12 07:05:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9542 states, 9541 states have (on average 1.5182894874751074) internal successors, (14486), 9541 states have internal predecessors, (14486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9542 states to 9542 states and 14486 transitions. [2022-07-12 07:05:01,651 INFO L78 Accepts]: Start accepts. Automaton has 9542 states and 14486 transitions. Word has length 68 [2022-07-12 07:05:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:01,651 INFO L495 AbstractCegarLoop]: Abstraction has 9542 states and 14486 transitions. [2022-07-12 07:05:01,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 9542 states and 14486 transitions. [2022-07-12 07:05:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 07:05:01,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:01,656 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] [2022-07-12 07:05:01,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 07:05:01,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:01,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:01,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1059619418, now seen corresponding path program 1 times [2022-07-12 07:05:01,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:01,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100684567] [2022-07-12 07:05:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:01,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:01,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:01,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100684567] [2022-07-12 07:05:01,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100684567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:01,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:01,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 07:05:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364575066] [2022-07-12 07:05:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:01,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:05:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:05:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:05:01,805 INFO L87 Difference]: Start difference. First operand 9542 states and 14486 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:07,026 INFO L93 Difference]: Finished difference Result 42240 states and 63609 transitions. [2022-07-12 07:05:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 07:05:07,026 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-12 07:05:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:07,075 INFO L225 Difference]: With dead ends: 42240 [2022-07-12 07:05:07,076 INFO L226 Difference]: Without dead ends: 33381 [2022-07-12 07:05:07,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2022-07-12 07:05:07,099 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1977 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:07,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 1914 Invalid, 1602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 07:05:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33381 states. [2022-07-12 07:05:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33381 to 9676. [2022-07-12 07:05:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9676 states, 9675 states have (on average 1.5121447028423773) internal successors, (14630), 9675 states have internal predecessors, (14630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9676 states to 9676 states and 14630 transitions. [2022-07-12 07:05:08,650 INFO L78 Accepts]: Start accepts. Automaton has 9676 states and 14630 transitions. Word has length 68 [2022-07-12 07:05:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:08,651 INFO L495 AbstractCegarLoop]: Abstraction has 9676 states and 14630 transitions. [2022-07-12 07:05:08,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 9676 states and 14630 transitions. [2022-07-12 07:05:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:05:08,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:08,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:08,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 07:05:08,655 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1047773961, now seen corresponding path program 1 times [2022-07-12 07:05:08,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:08,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858367923] [2022-07-12 07:05:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:08,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:08,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:08,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858367923] [2022-07-12 07:05:08,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858367923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:08,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:08,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 07:05:08,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923555435] [2022-07-12 07:05:08,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:08,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:05:08,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:05:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 07:05:08,728 INFO L87 Difference]: Start difference. First operand 9676 states and 14630 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:11,026 INFO L93 Difference]: Finished difference Result 25520 states and 38764 transitions. [2022-07-12 07:05:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:05:11,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:05:11,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:11,054 INFO L225 Difference]: With dead ends: 25520 [2022-07-12 07:05:11,054 INFO L226 Difference]: Without dead ends: 16942 [2022-07-12 07:05:11,066 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 [2022-07-12 07:05:11,067 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 170 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:11,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 605 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:05:11,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16942 states. [2022-07-12 07:05:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16942 to 16820. [2022-07-12 07:05:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16820 states, 16819 states have (on average 1.5012783161900232) internal successors, (25250), 16819 states have internal predecessors, (25250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16820 states to 16820 states and 25250 transitions. [2022-07-12 07:05:13,376 INFO L78 Accepts]: Start accepts. Automaton has 16820 states and 25250 transitions. Word has length 69 [2022-07-12 07:05:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:13,376 INFO L495 AbstractCegarLoop]: Abstraction has 16820 states and 25250 transitions. [2022-07-12 07:05:13,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 16820 states and 25250 transitions. [2022-07-12 07:05:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:05:13,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:13,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:13,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 07:05:13,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1802228217, now seen corresponding path program 1 times [2022-07-12 07:05:13,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:13,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917903526] [2022-07-12 07:05:13,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:13,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:13,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:13,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917903526] [2022-07-12 07:05:13,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917903526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:13,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:13,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:05:13,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449126829] [2022-07-12 07:05:13,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:13,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:05:13,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:13,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:05:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:13,416 INFO L87 Difference]: Start difference. First operand 16820 states and 25250 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:16,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:16,440 INFO L93 Difference]: Finished difference Result 29184 states and 43867 transitions. [2022-07-12 07:05:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:05:16,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:05:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:16,466 INFO L225 Difference]: With dead ends: 29184 [2022-07-12 07:05:16,466 INFO L226 Difference]: Without dead ends: 20218 [2022-07-12 07:05:16,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:16,480 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 156 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:05:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20218 states. [2022-07-12 07:05:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20218 to 19984. [2022-07-12 07:05:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19984 states, 19983 states have (on average 1.4800580493419406) internal successors, (29576), 19983 states have internal predecessors, (29576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:19,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19984 states to 19984 states and 29576 transitions. [2022-07-12 07:05:19,331 INFO L78 Accepts]: Start accepts. Automaton has 19984 states and 29576 transitions. Word has length 69 [2022-07-12 07:05:19,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:19,331 INFO L495 AbstractCegarLoop]: Abstraction has 19984 states and 29576 transitions. [2022-07-12 07:05:19,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:19,331 INFO L276 IsEmpty]: Start isEmpty. Operand 19984 states and 29576 transitions. [2022-07-12 07:05:19,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:05:19,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:19,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:19,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 07:05:19,335 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:19,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1041130329, now seen corresponding path program 1 times [2022-07-12 07:05:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:19,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497790827] [2022-07-12 07:05:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:19,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:19,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:19,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497790827] [2022-07-12 07:05:19,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497790827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:19,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:19,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:05:19,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609245669] [2022-07-12 07:05:19,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:19,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:05:19,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:19,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:05:19,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:19,368 INFO L87 Difference]: Start difference. First operand 19984 states and 29576 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:24,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:24,578 INFO L93 Difference]: Finished difference Result 50136 states and 74406 transitions. [2022-07-12 07:05:24,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:05:24,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:05:24,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:24,622 INFO L225 Difference]: With dead ends: 50136 [2022-07-12 07:05:24,622 INFO L226 Difference]: Without dead ends: 33658 [2022-07-12 07:05:24,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:24,641 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 175 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:24,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 466 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:05:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33658 states. [2022-07-12 07:05:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33658 to 33592. [2022-07-12 07:05:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33592 states, 33591 states have (on average 1.4715251108927987) internal successors, (49430), 33591 states have internal predecessors, (49430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33592 states to 33592 states and 49430 transitions. [2022-07-12 07:05:29,773 INFO L78 Accepts]: Start accepts. Automaton has 33592 states and 49430 transitions. Word has length 69 [2022-07-12 07:05:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:29,773 INFO L495 AbstractCegarLoop]: Abstraction has 33592 states and 49430 transitions. [2022-07-12 07:05:29,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 33592 states and 49430 transitions. [2022-07-12 07:05:29,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:05:29,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:29,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:29,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 07:05:29,778 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:29,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:29,778 INFO L85 PathProgramCache]: Analyzing trace with hash -933815240, now seen corresponding path program 1 times [2022-07-12 07:05:29,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:29,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879464786] [2022-07-12 07:05:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:29,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879464786] [2022-07-12 07:05:29,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879464786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:29,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:29,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:05:29,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559004373] [2022-07-12 07:05:29,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:29,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:05:29,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:29,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:05:29,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:29,809 INFO L87 Difference]: Start difference. First operand 33592 states and 49430 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:35,230 INFO L93 Difference]: Finished difference Result 46445 states and 68037 transitions. [2022-07-12 07:05:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:05:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:05:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:35,279 INFO L225 Difference]: With dead ends: 46445 [2022-07-12 07:05:35,279 INFO L226 Difference]: Without dead ends: 34325 [2022-07-12 07:05:35,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:35,300 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 144 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:35,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 466 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:05:35,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34325 states. [2022-07-12 07:05:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34325 to 30847. [2022-07-12 07:05:40,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30847 states, 30846 states have (on average 1.4431692926149258) internal successors, (44516), 30846 states have internal predecessors, (44516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30847 states to 30847 states and 44516 transitions. [2022-07-12 07:05:40,665 INFO L78 Accepts]: Start accepts. Automaton has 30847 states and 44516 transitions. Word has length 69 [2022-07-12 07:05:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:40,666 INFO L495 AbstractCegarLoop]: Abstraction has 30847 states and 44516 transitions. [2022-07-12 07:05:40,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 30847 states and 44516 transitions. [2022-07-12 07:05:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 07:05:40,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:40,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:40,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 07:05:40,670 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:40,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:40,671 INFO L85 PathProgramCache]: Analyzing trace with hash 804290264, now seen corresponding path program 1 times [2022-07-12 07:05:40,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:40,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939498477] [2022-07-12 07:05:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939498477] [2022-07-12 07:05:40,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939498477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:40,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:40,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:05:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324750607] [2022-07-12 07:05:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:40,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:05:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:05:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:40,711 INFO L87 Difference]: Start difference. First operand 30847 states and 44516 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:05:46,853 INFO L93 Difference]: Finished difference Result 60636 states and 87270 transitions. [2022-07-12 07:05:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:05:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-12 07:05:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:05:46,901 INFO L225 Difference]: With dead ends: 60636 [2022-07-12 07:05:46,901 INFO L226 Difference]: Without dead ends: 33744 [2022-07-12 07:05:46,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:05:46,920 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 162 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:05:46,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 556 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:05:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33744 states. [2022-07-12 07:05:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33744 to 33426. [2022-07-12 07:05:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33426 states, 33425 states have (on average 1.4062228870605833) internal successors, (47003), 33425 states have internal predecessors, (47003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33426 states to 33426 states and 47003 transitions. [2022-07-12 07:05:53,196 INFO L78 Accepts]: Start accepts. Automaton has 33426 states and 47003 transitions. Word has length 69 [2022-07-12 07:05:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:05:53,197 INFO L495 AbstractCegarLoop]: Abstraction has 33426 states and 47003 transitions. [2022-07-12 07:05:53,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:05:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 33426 states and 47003 transitions. [2022-07-12 07:05:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:05:53,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:05:53,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:05:53,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 07:05:53,201 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:05:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:05:53,202 INFO L85 PathProgramCache]: Analyzing trace with hash -77781245, now seen corresponding path program 1 times [2022-07-12 07:05:53,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:05:53,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063270208] [2022-07-12 07:05:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:05:53,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:05:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:05:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:05:53,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:05:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063270208] [2022-07-12 07:05:53,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063270208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:05:53,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:05:53,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:05:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177586319] [2022-07-12 07:05:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:05:53,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:05:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:05:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:05:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:05:53,267 INFO L87 Difference]: Start difference. First operand 33426 states and 47003 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:03,895 INFO L93 Difference]: Finished difference Result 69852 states and 99129 transitions. [2022-07-12 07:06:03,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:06:03,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:06:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:03,987 INFO L225 Difference]: With dead ends: 69852 [2022-07-12 07:06:03,987 INFO L226 Difference]: Without dead ends: 56383 [2022-07-12 07:06:04,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:06:04,012 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1091 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:04,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 1139 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:06:04,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56383 states. [2022-07-12 07:06:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56383 to 45616. [2022-07-12 07:06:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45616 states, 45615 states have (on average 1.4066863970185246) internal successors, (64166), 45615 states have internal predecessors, (64166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:13,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45616 states to 45616 states and 64166 transitions. [2022-07-12 07:06:13,623 INFO L78 Accepts]: Start accepts. Automaton has 45616 states and 64166 transitions. Word has length 70 [2022-07-12 07:06:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:06:13,623 INFO L495 AbstractCegarLoop]: Abstraction has 45616 states and 64166 transitions. [2022-07-12 07:06:13,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:13,624 INFO L276 IsEmpty]: Start isEmpty. Operand 45616 states and 64166 transitions. [2022-07-12 07:06:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 07:06:13,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:06:13,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:06:13,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 07:06:13,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:06:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:06:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1497723701, now seen corresponding path program 1 times [2022-07-12 07:06:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:06:13,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713138840] [2022-07-12 07:06:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:06:13,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:06:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:06:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 07:06:13,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:06:13,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713138840] [2022-07-12 07:06:13,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713138840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:06:13,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:06:13,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 07:06:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469512193] [2022-07-12 07:06:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:06:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:06:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:06:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:06:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:06:13,680 INFO L87 Difference]: Start difference. First operand 45616 states and 64166 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 07:06:26,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:06:26,446 INFO L93 Difference]: Finished difference Result 69167 states and 97864 transitions. [2022-07-12 07:06:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 07:06:26,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-12 07:06:26,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:06:26,566 INFO L225 Difference]: With dead ends: 69167 [2022-07-12 07:06:26,566 INFO L226 Difference]: Without dead ends: 65178 [2022-07-12 07:06:26,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 07:06:26,587 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1114 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:06:26,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1206 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:06:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65178 states.