./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label35.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/eca-rers2012/Problem13_label35.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 bf2e434ddb1157766f0427b524597e37ed925d60033c6d19795be6a9bcd22934 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:11:28,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:11:28,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:11:28,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:11:28,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:11:28,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:11:28,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:11:28,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:11:28,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:11:28,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:11:28,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:11:28,774 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:11:28,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:11:28,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:11:28,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:11:28,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:11:28,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:11:28,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:11:28,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:11:28,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:11:28,791 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:11:28,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:11:28,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:11:28,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:11:28,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:11:28,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:11:28,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:11:28,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:11:28,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:11:28,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:11:28,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:11:28,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:11:28,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:11:28,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:11:28,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:11:28,807 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:11:28,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:11:28,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:11:28,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:11:28,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:11:28,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:11:28,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:11:28,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:11:28,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:11:28,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:11:28,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:11:28,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:11:28,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:11:28,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:11:28,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:11:28,843 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:11:28,843 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:11:28,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:11:28,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:11:28,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:11:28,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:11:28,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:11:28,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:11:28,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:11:28,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:11:28,845 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:11:28,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:11:28,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:11:28,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:11:28,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:11:28,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:11:28,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:11:28,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:11:28,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:11:28,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:11:28,848 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:11:28,848 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:11:28,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:11:28,848 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:11:28,849 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:11:28,849 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:11:28,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf2e434ddb1157766f0427b524597e37ed925d60033c6d19795be6a9bcd22934 [2022-07-12 01:11:29,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:11:29,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:11:29,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:11:29,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:11:29,107 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:11:29,108 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2022-07-12 01:11:29,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879bd6247/b09c3fd6283940d1a2e5a92b80444347/FLAG83e6076ab [2022-07-12 01:11:29,892 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:11:29,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label35.c [2022-07-12 01:11:29,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879bd6247/b09c3fd6283940d1a2e5a92b80444347/FLAG83e6076ab [2022-07-12 01:11:30,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/879bd6247/b09c3fd6283940d1a2e5a92b80444347 [2022-07-12 01:11:30,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:11:30,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:11:30,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:11:30,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:11:30,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:11:30,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:11:30" (1/1) ... [2022-07-12 01:11:30,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc29196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:30, skipping insertion in model container [2022-07-12 01:11:30,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:11:30" (1/1) ... [2022-07-12 01:11:30,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:11:30,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:11:30,536 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/eca-rers2012/Problem13_label35.c[1793,1806] [2022-07-12 01:11:31,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:11:31,307 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:11:31,332 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/eca-rers2012/Problem13_label35.c[1793,1806] [2022-07-12 01:11:31,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:11:31,823 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:11:31,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31 WrapperNode [2022-07-12 01:11:31,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:11:31,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:11:31,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:11:31,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:11:31,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:31,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:32,518 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-07-12 01:11:32,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:11:32,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:11:32,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:11:32,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:11:32,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:32,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:32,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:32,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:33,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:33,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:33,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:33,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:11:33,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:11:33,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:11:33,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:11:33,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (1/1) ... [2022-07-12 01:11:33,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:11:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:11:33,285 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 01:11:33,308 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 01:11:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:11:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:11:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:11:33,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:11:33,407 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:11:33,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:11:37,902 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:11:37,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:11:37,922 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:11:37,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:11:37 BoogieIcfgContainer [2022-07-12 01:11:37,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:11:37,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:11:37,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:11:37,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:11:37,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:11:30" (1/3) ... [2022-07-12 01:11:37,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4482af3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:11:37, skipping insertion in model container [2022-07-12 01:11:37,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:11:31" (2/3) ... [2022-07-12 01:11:37,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4482af3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:11:37, skipping insertion in model container [2022-07-12 01:11:37,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:11:37" (3/3) ... [2022-07-12 01:11:37,932 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label35.c [2022-07-12 01:11:37,944 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:11:37,945 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:11:38,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:11:38,008 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@40112705, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@29409075 [2022-07-12 01:11:38,009 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:11:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states 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 01:11:38,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 01:11:38,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:11:38,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:11:38,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:11:38,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:11:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-07-12 01:11:38,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:11:38,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013617486] [2022-07-12 01:11:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:11:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:11:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:11:38,160 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 01:11:38,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:11:38,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013617486] [2022-07-12 01:11:38,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013617486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:11:38,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:11:38,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:11:38,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520811490] [2022-07-12 01:11:38,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:11:38,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:11:38,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:11:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:11:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:11:38,193 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 01:11:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:11:42,717 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-07-12 01:11:42,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:11:42,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-07-12 01:11:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:11:42,749 INFO L225 Difference]: With dead ends: 3160 [2022-07-12 01:11:42,749 INFO L226 Difference]: Without dead ends: 1983 [2022-07-12 01:11:42,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:11:42,763 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1093 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:11:42,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-12 01:11:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-07-12 01:11:42,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-07-12 01:11:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states 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 01:11:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-07-12 01:11:42,873 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 10 [2022-07-12 01:11:42,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:11:42,874 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-07-12 01:11:42,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 01:11:42,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-07-12 01:11:42,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 01:11:42,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:11:42,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:11:42,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:11:42,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:11:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:11:42,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2107929182, now seen corresponding path program 1 times [2022-07-12 01:11:42,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:11:42,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258316824] [2022-07-12 01:11:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:11:42,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:11:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:11:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:11:43,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:11:43,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258316824] [2022-07-12 01:11:43,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258316824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:11:43,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:11:43,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:11:43,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284900495] [2022-07-12 01:11:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:11:43,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:11:43,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:11:43,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:11:43,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:11:43,039 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:11:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:11:46,512 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-07-12 01:11:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:11:46,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-12 01:11:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:11:46,525 INFO L225 Difference]: With dead ends: 5456 [2022-07-12 01:11:46,526 INFO L226 Difference]: Without dead ends: 3528 [2022-07-12 01:11:46,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:11:46,530 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:11:46,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 01:11:46,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-07-12 01:11:46,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-07-12 01:11:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 0 states have call successors, (0), 0 states 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 01:11:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-07-12 01:11:46,602 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 75 [2022-07-12 01:11:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:11:46,602 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-07-12 01:11:46,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:11:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-07-12 01:11:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 01:11:46,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:11:46,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:11:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:11:46,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:11:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:11:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash -661621005, now seen corresponding path program 1 times [2022-07-12 01:11:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:11:46,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897974228] [2022-07-12 01:11:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:11:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:11:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:11:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:11:46,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:11:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897974228] [2022-07-12 01:11:46,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897974228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:11:46,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:11:46,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:11:46,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111590724] [2022-07-12 01:11:46,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:11:46,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:11:46,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:11:46,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:11:46,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:11:46,735 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 01:11:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:11:50,236 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2022-07-12 01:11:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:11:50,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-12 01:11:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:11:50,262 INFO L225 Difference]: With dead ends: 10232 [2022-07-12 01:11:50,262 INFO L226 Difference]: Without dead ends: 6708 [2022-07-12 01:11:50,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:11:50,268 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:11:50,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 01:11:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-07-12 01:11:50,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2022-07-12 01:11:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 0 states have call successors, (0), 0 states 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 01:11:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-07-12 01:11:50,399 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 81 [2022-07-12 01:11:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:11:50,402 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-07-12 01:11:50,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 01:11:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-07-12 01:11:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 01:11:50,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:11:50,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:11:50,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:11:50,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:11:50,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:11:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash -533752440, now seen corresponding path program 1 times [2022-07-12 01:11:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:11:50,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978674823] [2022-07-12 01:11:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:11:50,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:11:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:11:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:11:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:11:50,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978674823] [2022-07-12 01:11:50,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978674823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:11:50,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:11:50,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:11:50,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215800749] [2022-07-12 01:11:50,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:11:50,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:11:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:11:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:11:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:11:50,574 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:11:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:11:54,034 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-07-12 01:11:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:11:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-07-12 01:11:54,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:11:54,075 INFO L225 Difference]: With dead ends: 17443 [2022-07-12 01:11:54,076 INFO L226 Difference]: Without dead ends: 10745 [2022-07-12 01:11:54,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:11:54,097 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:11:54,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 01:11:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-07-12 01:11:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-07-12 01:11:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states 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 01:11:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-07-12 01:11:54,320 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 111 [2022-07-12 01:11:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:11:54,322 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-07-12 01:11:54,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:11:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-07-12 01:11:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 01:11:54,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:11:54,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:54,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:11:54,331 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:11:54,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:11:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1357824881, now seen corresponding path program 1 times [2022-07-12 01:11:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:11:54,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417517414] [2022-07-12 01:11:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:11:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:11:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:11:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:11:54,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:11:54,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417517414] [2022-07-12 01:11:54,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417517414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:11:54,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:11:54,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:11:54,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820110744] [2022-07-12 01:11:54,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:11:54,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:11:54,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:11:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:11:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:11:54,558 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 01:11:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:11:57,719 INFO L93 Difference]: Finished difference Result 30031 states and 41242 transitions. [2022-07-12 01:11:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:11:57,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-07-12 01:11:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:11:57,774 INFO L225 Difference]: With dead ends: 30031 [2022-07-12 01:11:57,775 INFO L226 Difference]: Without dead ends: 20151 [2022-07-12 01:11:57,792 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 01:11:57,793 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 856 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:11:57,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 1160 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 01:11:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2022-07-12 01:11:58,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 18550. [2022-07-12 01:11:58,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18550 states, 18549 states have (on average 1.252466440239366) internal successors, (23232), 18549 states have internal predecessors, (23232), 0 states have call successors, (0), 0 states 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 01:11:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18550 states to 18550 states and 23232 transitions. [2022-07-12 01:11:58,109 INFO L78 Accepts]: Start accepts. Automaton has 18550 states and 23232 transitions. Word has length 121 [2022-07-12 01:11:58,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:11:58,110 INFO L495 AbstractCegarLoop]: Abstraction has 18550 states and 23232 transitions. [2022-07-12 01:11:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 01:11:58,114 INFO L276 IsEmpty]: Start isEmpty. Operand 18550 states and 23232 transitions. [2022-07-12 01:11:58,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 01:11:58,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:11:58,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:11:58,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:11:58,116 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:11:58,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:11:58,117 INFO L85 PathProgramCache]: Analyzing trace with hash -955704610, now seen corresponding path program 1 times [2022-07-12 01:11:58,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:11:58,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779047253] [2022-07-12 01:11:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:11:58,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:11:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:11:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:11:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:11:58,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779047253] [2022-07-12 01:11:58,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779047253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:11:58,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:11:58,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:11:58,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978230060] [2022-07-12 01:11:58,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:11:58,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:11:58,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:11:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:11:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:11:58,257 INFO L87 Difference]: Start difference. First operand 18550 states and 23232 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 01:12:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:01,324 INFO L93 Difference]: Finished difference Result 44989 states and 55638 transitions. [2022-07-12 01:12:01,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:01,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-07-12 01:12:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:01,383 INFO L225 Difference]: With dead ends: 44989 [2022-07-12 01:12:01,383 INFO L226 Difference]: Without dead ends: 26441 [2022-07-12 01:12:01,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:12:01,399 INFO L413 NwaCegarLoop]: 1030 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:01,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1214 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 01:12:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2022-07-12 01:12:01,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2022-07-12 01:12:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.2007717625695153) internal successors, (31740), 26433 states have internal predecessors, (31740), 0 states have call successors, (0), 0 states 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 01:12:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31740 transitions. [2022-07-12 01:12:01,746 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31740 transitions. Word has length 126 [2022-07-12 01:12:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:01,747 INFO L495 AbstractCegarLoop]: Abstraction has 26434 states and 31740 transitions. [2022-07-12 01:12:01,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 01:12:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31740 transitions. [2022-07-12 01:12:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-12 01:12:01,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:01,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:12:01,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 01:12:01,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2104272133, now seen corresponding path program 1 times [2022-07-12 01:12:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677787665] [2022-07-12 01:12:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:01,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:12:01,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:01,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677787665] [2022-07-12 01:12:01,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677787665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:01,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:01,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:12:01,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695308325] [2022-07-12 01:12:01,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:01,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:01,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:01,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:01,889 INFO L87 Difference]: Start difference. First operand 26434 states and 31740 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 01:12:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:04,969 INFO L93 Difference]: Finished difference Result 72535 states and 87976 transitions. [2022-07-12 01:12:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:04,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2022-07-12 01:12:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:05,177 INFO L225 Difference]: With dead ends: 72535 [2022-07-12 01:12:05,178 INFO L226 Difference]: Without dead ends: 46103 [2022-07-12 01:12:05,201 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 01:12:05,201 INFO L413 NwaCegarLoop]: 1847 mSDtfsCounter, 840 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:05,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 01:12:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2022-07-12 01:12:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 42946. [2022-07-12 01:12:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.17205728257073) internal successors, (50334), 42945 states have internal predecessors, (50334), 0 states have call successors, (0), 0 states 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 01:12:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50334 transitions. [2022-07-12 01:12:05,765 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50334 transitions. Word has length 224 [2022-07-12 01:12:05,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:05,765 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50334 transitions. [2022-07-12 01:12:05,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 01:12:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50334 transitions. [2022-07-12 01:12:05,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-12 01:12:05,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:05,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:12:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:12:05,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2051912356, now seen corresponding path program 1 times [2022-07-12 01:12:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:05,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071040936] [2022-07-12 01:12:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 01:12:05,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:05,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071040936] [2022-07-12 01:12:05,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071040936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:05,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:05,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:12:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643987687] [2022-07-12 01:12:05,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:05,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:05,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:05,887 INFO L87 Difference]: Start difference. First operand 42946 states and 50334 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 01:12:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:08,866 INFO L93 Difference]: Finished difference Result 85103 states and 99869 transitions. [2022-07-12 01:12:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:08,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 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 230 [2022-07-12 01:12:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:08,926 INFO L225 Difference]: With dead ends: 85103 [2022-07-12 01:12:08,927 INFO L226 Difference]: Without dead ends: 42946 [2022-07-12 01:12:08,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:12:08,963 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2501 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:08,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1193 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2501 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 01:12:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42946 states. [2022-07-12 01:12:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42946 to 42946. [2022-07-12 01:12:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42946 states, 42945 states have (on average 1.1719408545814414) internal successors, (50329), 42945 states have internal predecessors, (50329), 0 states have call successors, (0), 0 states 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 01:12:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42946 states to 42946 states and 50329 transitions. [2022-07-12 01:12:09,671 INFO L78 Accepts]: Start accepts. Automaton has 42946 states and 50329 transitions. Word has length 230 [2022-07-12 01:12:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:09,671 INFO L495 AbstractCegarLoop]: Abstraction has 42946 states and 50329 transitions. [2022-07-12 01:12:09,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 01:12:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 42946 states and 50329 transitions. [2022-07-12 01:12:09,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-12 01:12:09,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:09,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:12:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 01:12:09,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:09,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash 559254191, now seen corresponding path program 1 times [2022-07-12 01:12:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:09,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127203557] [2022-07-12 01:12:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:12:09,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127203557] [2022-07-12 01:12:09,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127203557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:09,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:09,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:12:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464542098] [2022-07-12 01:12:09,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:09,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:09,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:09,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:09,773 INFO L87 Difference]: Start difference. First operand 42946 states and 50329 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 01:12:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:13,296 INFO L93 Difference]: Finished difference Result 104790 states and 124853 transitions. [2022-07-12 01:12:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2022-07-12 01:12:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:13,375 INFO L225 Difference]: With dead ends: 104790 [2022-07-12 01:12:13,376 INFO L226 Difference]: Without dead ends: 62633 [2022-07-12 01:12:13,401 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 01:12:13,402 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 823 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:13,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 930 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 01:12:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62633 states. [2022-07-12 01:12:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62633 to 60261. [2022-07-12 01:12:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60261 states, 60260 states have (on average 1.1628609359442417) internal successors, (70074), 60260 states have internal predecessors, (70074), 0 states have call successors, (0), 0 states 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 01:12:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60261 states to 60261 states and 70074 transitions. [2022-07-12 01:12:14,175 INFO L78 Accepts]: Start accepts. Automaton has 60261 states and 70074 transitions. Word has length 237 [2022-07-12 01:12:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:14,176 INFO L495 AbstractCegarLoop]: Abstraction has 60261 states and 70074 transitions. [2022-07-12 01:12:14,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 01:12:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 60261 states and 70074 transitions. [2022-07-12 01:12:14,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-12 01:12:14,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:14,182 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:12:14,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:12:14,182 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:14,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1758434701, now seen corresponding path program 1 times [2022-07-12 01:12:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:14,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948223876] [2022-07-12 01:12:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:14,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 144 proven. 113 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 01:12:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:14,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948223876] [2022-07-12 01:12:14,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948223876] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:12:14,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094675608] [2022-07-12 01:12:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:14,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:12:14,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:12:14,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:12:14,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:12:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:14,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:12:14,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:12:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-12 01:12:14,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:12:14,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094675608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:14,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:12:14,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-07-12 01:12:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005957974] [2022-07-12 01:12:14,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:14,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:14,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:14,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:14,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-12 01:12:14,996 INFO L87 Difference]: Start difference. First operand 60261 states and 70074 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 01:12:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:18,230 INFO L93 Difference]: Finished difference Result 119722 states and 139344 transitions. [2022-07-12 01:12:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:18,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 316 [2022-07-12 01:12:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:18,322 INFO L225 Difference]: With dead ends: 119722 [2022-07-12 01:12:18,323 INFO L226 Difference]: Without dead ends: 60250 [2022-07-12 01:12:18,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-12 01:12:18,351 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1075 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:18,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 821 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 01:12:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60250 states. [2022-07-12 01:12:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60250 to 60247. [2022-07-12 01:12:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60247 states, 60246 states have (on average 1.1198917770474388) internal successors, (67469), 60246 states have internal predecessors, (67469), 0 states have call successors, (0), 0 states 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 01:12:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60247 states to 60247 states and 67469 transitions. [2022-07-12 01:12:19,049 INFO L78 Accepts]: Start accepts. Automaton has 60247 states and 67469 transitions. Word has length 316 [2022-07-12 01:12:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:19,049 INFO L495 AbstractCegarLoop]: Abstraction has 60247 states and 67469 transitions. [2022-07-12 01:12:19,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 01:12:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 60247 states and 67469 transitions. [2022-07-12 01:12:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2022-07-12 01:12:19,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:19,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:12:19,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 01:12:19,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 01:12:19,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:19,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:19,254 INFO L85 PathProgramCache]: Analyzing trace with hash -949171357, now seen corresponding path program 1 times [2022-07-12 01:12:19,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:19,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826308576] [2022-07-12 01:12:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:19,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-12 01:12:19,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:19,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826308576] [2022-07-12 01:12:19,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826308576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:19,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:19,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:12:19,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336463285] [2022-07-12 01:12:19,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:19,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:19,593 INFO L87 Difference]: Start difference. First operand 60247 states and 67469 transitions. Second operand has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 01:12:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:23,105 INFO L93 Difference]: Finished difference Result 131500 states and 148742 transitions. [2022-07-12 01:12:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:23,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 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 325 [2022-07-12 01:12:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:23,194 INFO L225 Difference]: With dead ends: 131500 [2022-07-12 01:12:23,194 INFO L226 Difference]: Without dead ends: 72042 [2022-07-12 01:12:23,224 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 01:12:23,225 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 1145 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 3159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:23,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1522 Invalid, 3159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 01:12:23,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72042 states. [2022-07-12 01:12:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72042 to 72041. [2022-07-12 01:12:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72041 states, 72040 states have (on average 1.1067323709050527) internal successors, (79729), 72040 states have internal predecessors, (79729), 0 states have call successors, (0), 0 states 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 01:12:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72041 states to 72041 states and 79729 transitions. [2022-07-12 01:12:24,023 INFO L78 Accepts]: Start accepts. Automaton has 72041 states and 79729 transitions. Word has length 325 [2022-07-12 01:12:24,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:24,023 INFO L495 AbstractCegarLoop]: Abstraction has 72041 states and 79729 transitions. [2022-07-12 01:12:24,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 01:12:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 72041 states and 79729 transitions. [2022-07-12 01:12:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-07-12 01:12:24,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:24,028 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:12:24,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:12:24,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:24,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:24,029 INFO L85 PathProgramCache]: Analyzing trace with hash 240805553, now seen corresponding path program 1 times [2022-07-12 01:12:24,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:24,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290374015] [2022-07-12 01:12:24,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:24,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 01:12:24,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:24,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290374015] [2022-07-12 01:12:24,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290374015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:24,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:24,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:12:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105713324] [2022-07-12 01:12:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:24,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:12:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:12:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:12:24,148 INFO L87 Difference]: Start difference. First operand 72041 states and 79729 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 01:12:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:30,712 INFO L93 Difference]: Finished difference Result 181243 states and 200566 transitions. [2022-07-12 01:12:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:12:30,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 358 [2022-07-12 01:12:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:30,842 INFO L225 Difference]: With dead ends: 181243 [2022-07-12 01:12:30,843 INFO L226 Difference]: Without dead ends: 109991 [2022-07-12 01:12:30,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:12:30,874 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1678 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6581 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 7521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 6581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:30,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1678 Valid, 892 Invalid, 7521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 6581 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-12 01:12:30,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109991 states. [2022-07-12 01:12:31,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109991 to 87793. [2022-07-12 01:12:31,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87793 states, 87792 states have (on average 1.0966375068343357) internal successors, (96276), 87792 states have internal predecessors, (96276), 0 states have call successors, (0), 0 states 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 01:12:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87793 states to 87793 states and 96276 transitions. [2022-07-12 01:12:32,006 INFO L78 Accepts]: Start accepts. Automaton has 87793 states and 96276 transitions. Word has length 358 [2022-07-12 01:12:32,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:32,006 INFO L495 AbstractCegarLoop]: Abstraction has 87793 states and 96276 transitions. [2022-07-12 01:12:32,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 01:12:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 87793 states and 96276 transitions. [2022-07-12 01:12:32,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-07-12 01:12:32,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:32,012 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:32,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 01:12:32,013 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1615939699, now seen corresponding path program 1 times [2022-07-12 01:12:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:32,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213411489] [2022-07-12 01:12:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:32,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 01:12:32,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:32,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213411489] [2022-07-12 01:12:32,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213411489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:32,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:32,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:12:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722018754] [2022-07-12 01:12:32,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:32,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:32,183 INFO L87 Difference]: Start difference. First operand 87793 states and 96276 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 01:12:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:36,060 INFO L93 Difference]: Finished difference Result 199191 states and 219080 transitions. [2022-07-12 01:12:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 371 [2022-07-12 01:12:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:36,208 INFO L225 Difference]: With dead ends: 199191 [2022-07-12 01:12:36,209 INFO L226 Difference]: Without dead ends: 112187 [2022-07-12 01:12:36,256 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 01:12:36,257 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 815 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 908 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:36,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 835 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [908 Valid, 2404 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 01:12:36,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112187 states. [2022-07-12 01:12:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112187 to 110599. [2022-07-12 01:12:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110599 states, 110598 states have (on average 1.0884554874410026) internal successors, (120381), 110598 states have internal predecessors, (120381), 0 states have call successors, (0), 0 states 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 01:12:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110599 states to 110599 states and 120381 transitions. [2022-07-12 01:12:37,678 INFO L78 Accepts]: Start accepts. Automaton has 110599 states and 120381 transitions. Word has length 371 [2022-07-12 01:12:37,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:37,679 INFO L495 AbstractCegarLoop]: Abstraction has 110599 states and 120381 transitions. [2022-07-12 01:12:37,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 01:12:37,680 INFO L276 IsEmpty]: Start isEmpty. Operand 110599 states and 120381 transitions. [2022-07-12 01:12:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-07-12 01:12:37,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:37,694 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:12:37,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:12:37,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash -459150642, now seen corresponding path program 1 times [2022-07-12 01:12:37,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:37,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122024080] [2022-07-12 01:12:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-12 01:12:38,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:38,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122024080] [2022-07-12 01:12:38,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122024080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:38,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:38,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:12:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130227443] [2022-07-12 01:12:38,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:38,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:38,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:38,194 INFO L87 Difference]: Start difference. First operand 110599 states and 120381 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 01:12:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:41,863 INFO L93 Difference]: Finished difference Result 244017 states and 266527 transitions. [2022-07-12 01:12:41,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:41,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 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 477 [2022-07-12 01:12:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:42,050 INFO L225 Difference]: With dead ends: 244017 [2022-07-12 01:12:42,051 INFO L226 Difference]: Without dead ends: 132633 [2022-07-12 01:12:42,107 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 01:12:42,108 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 849 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:42,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1842 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 01:12:42,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132633 states. [2022-07-12 01:12:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132633 to 132620. [2022-07-12 01:12:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132620 states, 132619 states have (on average 1.0746650178330406) internal successors, (142521), 132619 states have internal predecessors, (142521), 0 states have call successors, (0), 0 states 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 01:12:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132620 states to 132620 states and 142521 transitions. [2022-07-12 01:12:44,134 INFO L78 Accepts]: Start accepts. Automaton has 132620 states and 142521 transitions. Word has length 477 [2022-07-12 01:12:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:44,135 INFO L495 AbstractCegarLoop]: Abstraction has 132620 states and 142521 transitions. [2022-07-12 01:12:44,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 01:12:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 132620 states and 142521 transitions. [2022-07-12 01:12:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-12 01:12:44,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:44,160 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:44,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:12:44,161 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:44,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1561614142, now seen corresponding path program 1 times [2022-07-12 01:12:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:44,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816243984] [2022-07-12 01:12:44,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:44,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 253 proven. 113 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 01:12:44,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:44,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816243984] [2022-07-12 01:12:44,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816243984] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:12:44,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996385444] [2022-07-12 01:12:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:44,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:12:44,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:12:44,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:12:44,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:12:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:44,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 01:12:44,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:12:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-12 01:12:45,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:12:45,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996385444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:45,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:12:45,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 01:12:45,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786554513] [2022-07-12 01:12:45,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:45,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:45,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 01:12:45,415 INFO L87 Difference]: Start difference. First operand 132620 states and 142521 transitions. Second operand has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 01:12:48,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:48,551 INFO L93 Difference]: Finished difference Result 251079 states and 270447 transitions. [2022-07-12 01:12:48,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:48,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 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 593 [2022-07-12 01:12:48,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:48,735 INFO L225 Difference]: With dead ends: 251079 [2022-07-12 01:12:48,735 INFO L226 Difference]: Without dead ends: 135779 [2022-07-12 01:12:48,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 592 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 01:12:48,999 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2425 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:48,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1115 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2425 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:12:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135779 states. [2022-07-12 01:12:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135779 to 135769. [2022-07-12 01:12:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135769 states, 135768 states have (on average 1.0669450827882858) internal successors, (144857), 135768 states have internal predecessors, (144857), 0 states have call successors, (0), 0 states 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 01:12:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135769 states to 135769 states and 144857 transitions. [2022-07-12 01:12:50,593 INFO L78 Accepts]: Start accepts. Automaton has 135769 states and 144857 transitions. Word has length 593 [2022-07-12 01:12:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:50,943 INFO L495 AbstractCegarLoop]: Abstraction has 135769 states and 144857 transitions. [2022-07-12 01:12:50,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states 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 01:12:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 135769 states and 144857 transitions. [2022-07-12 01:12:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2022-07-12 01:12:50,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:50,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:51,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-12 01:12:51,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 01:12:51,212 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash -698546600, now seen corresponding path program 1 times [2022-07-12 01:12:51,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:51,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315100558] [2022-07-12 01:12:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:51,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 743 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-12 01:12:51,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:51,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315100558] [2022-07-12 01:12:51,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315100558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:51,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:51,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:12:51,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354845438] [2022-07-12 01:12:51,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:51,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:51,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:51,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:51,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:51,455 INFO L87 Difference]: Start difference. First operand 135769 states and 144857 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 01:12:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:54,860 INFO L93 Difference]: Finished difference Result 272326 states and 290511 transitions. [2022-07-12 01:12:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:54,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 635 [2022-07-12 01:12:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:55,034 INFO L225 Difference]: With dead ends: 272326 [2022-07-12 01:12:55,034 INFO L226 Difference]: Without dead ends: 137346 [2022-07-12 01:12:55,090 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 01:12:55,090 INFO L413 NwaCegarLoop]: 1328 mSDtfsCounter, 919 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:55,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1405 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 01:12:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137346 states. [2022-07-12 01:12:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137346 to 135759. [2022-07-12 01:12:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135759 states, 135758 states have (on average 1.0514371160447267) internal successors, (142741), 135758 states have internal predecessors, (142741), 0 states have call successors, (0), 0 states 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 01:12:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135759 states to 135759 states and 142741 transitions. [2022-07-12 01:12:56,834 INFO L78 Accepts]: Start accepts. Automaton has 135759 states and 142741 transitions. Word has length 635 [2022-07-12 01:12:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:12:56,835 INFO L495 AbstractCegarLoop]: Abstraction has 135759 states and 142741 transitions. [2022-07-12 01:12:56,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 01:12:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 135759 states and 142741 transitions. [2022-07-12 01:12:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-07-12 01:12:56,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:12:56,866 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:12:56,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:12:56,867 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:12:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:12:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash 521450405, now seen corresponding path program 1 times [2022-07-12 01:12:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:12:56,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368777169] [2022-07-12 01:12:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:12:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:12:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:12:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2022-07-12 01:12:57,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:12:57,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368777169] [2022-07-12 01:12:57,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368777169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:12:57,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:12:57,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:12:57,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091798702] [2022-07-12 01:12:57,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:12:57,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:12:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:12:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:12:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:12:57,105 INFO L87 Difference]: Start difference. First operand 135759 states and 142741 transitions. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 01:12:59,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:12:59,484 INFO L93 Difference]: Finished difference Result 251818 states and 265273 transitions. [2022-07-12 01:12:59,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:12:59,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 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 676 [2022-07-12 01:12:59,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:12:59,631 INFO L225 Difference]: With dead ends: 251818 [2022-07-12 01:12:59,631 INFO L226 Difference]: Without dead ends: 134956 [2022-07-12 01:12:59,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 01:12:59,691 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1564 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:12:59,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 270 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:12:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134956 states. [2022-07-12 01:13:01,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134956 to 134955. [2022-07-12 01:13:01,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134955 states, 134954 states have (on average 1.0507358062747307) internal successors, (141801), 134954 states have internal predecessors, (141801), 0 states have call successors, (0), 0 states 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 01:13:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134955 states to 134955 states and 141801 transitions. [2022-07-12 01:13:01,550 INFO L78 Accepts]: Start accepts. Automaton has 134955 states and 141801 transitions. Word has length 676 [2022-07-12 01:13:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:13:01,550 INFO L495 AbstractCegarLoop]: Abstraction has 134955 states and 141801 transitions. [2022-07-12 01:13:01,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 01:13:01,551 INFO L276 IsEmpty]: Start isEmpty. Operand 134955 states and 141801 transitions. [2022-07-12 01:13:01,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2022-07-12 01:13:01,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:13:01,569 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:01,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 01:13:01,570 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:13:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:13:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash -464308242, now seen corresponding path program 1 times [2022-07-12 01:13:01,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:13:01,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024355736] [2022-07-12 01:13:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:13:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:13:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:13:01,822 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-07-12 01:13:01,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:13:01,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024355736] [2022-07-12 01:13:01,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024355736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:13:01,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:13:01,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:13:01,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422948766] [2022-07-12 01:13:01,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:13:01,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:13:01,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:13:01,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:13:01,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:13:01,825 INFO L87 Difference]: Start difference. First operand 134955 states and 141801 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 01:13:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:13:05,342 INFO L93 Difference]: Finished difference Result 269126 states and 282809 transitions. [2022-07-12 01:13:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:13:05,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 681 [2022-07-12 01:13:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:13:05,523 INFO L225 Difference]: With dead ends: 269126 [2022-07-12 01:13:05,524 INFO L226 Difference]: Without dead ends: 134960 [2022-07-12 01:13:05,600 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 01:13:05,601 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 616 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:13:05,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 1731 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-12 01:13:05,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134960 states. [2022-07-12 01:13:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134960 to 132592. [2022-07-12 01:13:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132592 states, 132591 states have (on average 1.042951633217941) internal successors, (138286), 132591 states have internal predecessors, (138286), 0 states have call successors, (0), 0 states 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 01:13:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132592 states to 132592 states and 138286 transitions. [2022-07-12 01:13:07,492 INFO L78 Accepts]: Start accepts. Automaton has 132592 states and 138286 transitions. Word has length 681 [2022-07-12 01:13:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:13:07,493 INFO L495 AbstractCegarLoop]: Abstraction has 132592 states and 138286 transitions. [2022-07-12 01:13:07,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 01:13:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 132592 states and 138286 transitions. [2022-07-12 01:13:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2022-07-12 01:13:07,512 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:13:07,513 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:07,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 01:13:07,513 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:13:07,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:13:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2070978386, now seen corresponding path program 1 times [2022-07-12 01:13:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:13:07,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684775334] [2022-07-12 01:13:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:13:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:13:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:13:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-12 01:13:07,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:13:07,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684775334] [2022-07-12 01:13:07,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684775334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:13:07,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:13:07,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:13:07,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3124373] [2022-07-12 01:13:07,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:13:07,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:13:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:13:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:13:07,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:13:07,795 INFO L87 Difference]: Start difference. First operand 132592 states and 138286 transitions. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 01:13:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:13:11,453 INFO L93 Difference]: Finished difference Result 270743 states and 282694 transitions. [2022-07-12 01:13:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:13:11,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 690 [2022-07-12 01:13:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:13:11,638 INFO L225 Difference]: With dead ends: 270743 [2022-07-12 01:13:11,638 INFO L226 Difference]: Without dead ends: 154687 [2022-07-12 01:13:11,705 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 01:13:11,706 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 647 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:13:11,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1568 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 01:13:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154687 states.