./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label36.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/Problem19_label36.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 158875ed82f6adb78f018d1a8bc2a535d1da6fdaab2920e425a521dfa898a4c9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:47:50,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:47:50,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:47:50,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:47:50,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:47:50,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:47:50,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:47:50,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:47:50,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:47:50,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:47:50,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:47:50,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:47:50,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:47:50,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:47:50,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:47:50,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:47:50,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:47:50,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:47:50,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:47:50,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:47:50,623 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:47:50,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:47:50,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:47:50,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:47:50,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:47:50,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:47:50,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:47:50,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:47:50,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:47:50,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:47:50,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:47:50,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:47:50,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:47:50,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:47:50,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:47:50,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:47:50,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:47:50,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:47:50,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:47:50,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:47:50,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:47:50,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:47:50,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:47:50,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:47:50,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:47:50,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:47:50,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:47:50,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:47:50,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:47:50,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:47:50,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:47:50,669 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:47:50,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:47:50,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:47:50,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:47:50,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:47:50,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:47:50,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:47:50,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:47:50,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:47:50,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:47:50,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:47:50,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:47:50,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:47:50,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:47:50,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:47:50,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:47:50,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:47:50,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:47:50,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:47:50,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:47:50,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:47:50,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:47:50,674 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:47:50,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:47:50,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:47:50,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 158875ed82f6adb78f018d1a8bc2a535d1da6fdaab2920e425a521dfa898a4c9 [2022-07-12 01:47:50,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:47:50,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:47:50,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:47:50,943 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:47:50,943 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:47:50,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label36.c [2022-07-12 01:47:51,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5eb460fc/d1575290fb644d06aead92640f936e9b/FLAG8307cd9e2 [2022-07-12 01:47:51,702 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:47:51,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label36.c [2022-07-12 01:47:51,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5eb460fc/d1575290fb644d06aead92640f936e9b/FLAG8307cd9e2 [2022-07-12 01:47:51,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5eb460fc/d1575290fb644d06aead92640f936e9b [2022-07-12 01:47:51,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:47:51,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:47:51,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:47:51,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:47:51,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:47:51,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:47:51" (1/1) ... [2022-07-12 01:47:51,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300385d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:51, skipping insertion in model container [2022-07-12 01:47:51,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:47:51" (1/1) ... [2022-07-12 01:47:51,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:47:51,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:47:52,249 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/Problem19_label36.c[4552,4565] [2022-07-12 01:47:53,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:47:53,152 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:47:53,180 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/Problem19_label36.c[4552,4565] [2022-07-12 01:47:53,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:47:53,738 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:47:53,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53 WrapperNode [2022-07-12 01:47:53,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:47:53,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:47:53,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:47:53,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:47:53,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:53,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:54,443 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-12 01:47:54,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:47:54,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:47:54,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:47:54,444 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:47:54,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:54,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:54,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:54,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:54,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:54,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:55,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:55,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:47:55,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:47:55,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:47:55,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:47:55,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (1/1) ... [2022-07-12 01:47:55,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:47:55,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:47:55,320 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 01:47:55,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:47:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:47:55,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:47:55,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:47:55,344 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 01:47:55,393 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:47:55,394 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:48:01,134 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:48:01,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:48:01,149 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:48:01,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:48:01 BoogieIcfgContainer [2022-07-12 01:48:01,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:48:01,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:48:01,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:48:01,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:48:01,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:47:51" (1/3) ... [2022-07-12 01:48:01,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c370c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:48:01, skipping insertion in model container [2022-07-12 01:48:01,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:47:53" (2/3) ... [2022-07-12 01:48:01,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c370c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:48:01, skipping insertion in model container [2022-07-12 01:48:01,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:48:01" (3/3) ... [2022-07-12 01:48:01,157 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label36.c [2022-07-12 01:48:01,166 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:48:01,167 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:48:01,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:48:01,238 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@4a91ba71, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60bc4834 [2022-07-12 01:48:01,238 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:48:01,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states 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 01:48:01,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 01:48:01,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:01,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:48:01,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:01,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2113343065, now seen corresponding path program 1 times [2022-07-12 01:48:01,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:01,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834404393] [2022-07-12 01:48:01,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:01,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:01,457 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 01:48:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:01,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834404393] [2022-07-12 01:48:01,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834404393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:01,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:48:01,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:48:01,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832099110] [2022-07-12 01:48:01,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:01,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:48:01,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:48:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:48:01,484 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 01:48:07,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:48:07,805 INFO L93 Difference]: Finished difference Result 4957 states and 9398 transitions. [2022-07-12 01:48:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:48:07,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-07-12 01:48:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:48:07,829 INFO L225 Difference]: With dead ends: 4957 [2022-07-12 01:48:07,830 INFO L226 Difference]: Without dead ends: 3129 [2022-07-12 01:48:07,835 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 01:48:07,837 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1593 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 1517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:48:07,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1595 Invalid, 5861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1517 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-12 01:48:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-07-12 01:48:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3108. [2022-07-12 01:48:07,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 1.6012230447376892) internal successors, (4975), 3107 states have internal predecessors, (4975), 0 states have call successors, (0), 0 states 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 01:48:07,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4975 transitions. [2022-07-12 01:48:07,982 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4975 transitions. Word has length 33 [2022-07-12 01:48:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:48:07,983 INFO L495 AbstractCegarLoop]: Abstraction has 3108 states and 4975 transitions. [2022-07-12 01:48:07,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 01:48:07,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4975 transitions. [2022-07-12 01:48:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 01:48:07,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:07,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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 01:48:07,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:48:07,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:07,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash -492833484, now seen corresponding path program 1 times [2022-07-12 01:48:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:07,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196929180] [2022-07-12 01:48:07,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:48:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:08,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196929180] [2022-07-12 01:48:08,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196929180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:08,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:48:08,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:48:08,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660131623] [2022-07-12 01:48:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:08,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:48:08,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:48:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:48:08,200 INFO L87 Difference]: Start difference. First operand 3108 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 01:48:17,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:48:17,070 INFO L93 Difference]: Finished difference Result 10359 states and 16187 transitions. [2022-07-12 01:48:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:48:17,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-07-12 01:48:17,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:48:17,104 INFO L225 Difference]: With dead ends: 10359 [2022-07-12 01:48:17,104 INFO L226 Difference]: Without dead ends: 7253 [2022-07-12 01:48:17,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:48:17,113 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 4321 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 11004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1500 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:48:17,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4321 Valid, 1292 Invalid, 11004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1500 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-07-12 01:48:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2022-07-12 01:48:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 7249. [2022-07-12 01:48:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7248 states have (on average 1.4503311258278146) internal successors, (10512), 7248 states have internal predecessors, (10512), 0 states have call successors, (0), 0 states 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 01:48:17,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10512 transitions. [2022-07-12 01:48:17,250 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10512 transitions. Word has length 100 [2022-07-12 01:48:17,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:48:17,252 INFO L495 AbstractCegarLoop]: Abstraction has 7249 states and 10512 transitions. [2022-07-12 01:48:17,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 01:48:17,252 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10512 transitions. [2022-07-12 01:48:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-12 01:48:17,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:17,264 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:17,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:48:17,266 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:17,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1861744942, now seen corresponding path program 1 times [2022-07-12 01:48:17,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:17,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82910194] [2022-07-12 01:48:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:17,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:17,570 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 01:48:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:17,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82910194] [2022-07-12 01:48:17,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82910194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:17,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:48:17,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:48:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860108009] [2022-07-12 01:48:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:17,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:48:17,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:17,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:48:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:48:17,572 INFO L87 Difference]: Start difference. First operand 7249 states and 10512 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 01:48:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:48:26,062 INFO L93 Difference]: Finished difference Result 17269 states and 24867 transitions. [2022-07-12 01:48:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:48:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 307 [2022-07-12 01:48:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:48:26,097 INFO L225 Difference]: With dead ends: 17269 [2022-07-12 01:48:26,097 INFO L226 Difference]: Without dead ends: 11387 [2022-07-12 01:48:26,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:48:26,105 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 9886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:48:26,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2157 Invalid, 9886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-07-12 01:48:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11387 states. [2022-07-12 01:48:26,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 11367. [2022-07-12 01:48:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3286116487770543) internal successors, (15101), 11366 states have internal predecessors, (15101), 0 states have call successors, (0), 0 states 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 01:48:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15101 transitions. [2022-07-12 01:48:26,266 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15101 transitions. Word has length 307 [2022-07-12 01:48:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:48:26,267 INFO L495 AbstractCegarLoop]: Abstraction has 11367 states and 15101 transitions. [2022-07-12 01:48:26,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 01:48:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15101 transitions. [2022-07-12 01:48:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-07-12 01:48:26,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:26,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:26,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:48:26,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:26,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash -663317972, now seen corresponding path program 1 times [2022-07-12 01:48:26,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:26,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721626612] [2022-07-12 01:48:26,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:26,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 01:48:26,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:26,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721626612] [2022-07-12 01:48:26,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721626612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:26,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:48:26,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:48:26,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869669655] [2022-07-12 01:48:26,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:26,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:48:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:48:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:48:26,540 INFO L87 Difference]: Start difference. First operand 11367 states and 15101 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 01:48:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:48:32,918 INFO L93 Difference]: Finished difference Result 20033 states and 27483 transitions. [2022-07-12 01:48:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:48:32,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 335 [2022-07-12 01:48:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:48:32,943 INFO L225 Difference]: With dead ends: 20033 [2022-07-12 01:48:32,943 INFO L226 Difference]: Without dead ends: 11367 [2022-07-12 01:48:32,953 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 01:48:32,954 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 7333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:48:32,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2117 Invalid, 7333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-12 01:48:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2022-07-12 01:48:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11367. [2022-07-12 01:48:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3274678866795706) internal successors, (15088), 11366 states have internal predecessors, (15088), 0 states have call successors, (0), 0 states 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 01:48:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15088 transitions. [2022-07-12 01:48:33,098 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15088 transitions. Word has length 335 [2022-07-12 01:48:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:48:33,099 INFO L495 AbstractCegarLoop]: Abstraction has 11367 states and 15088 transitions. [2022-07-12 01:48:33,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 01:48:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15088 transitions. [2022-07-12 01:48:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-07-12 01:48:33,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:33,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:48:33,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1078484088, now seen corresponding path program 1 times [2022-07-12 01:48:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:33,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096305579] [2022-07-12 01:48:33,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:48:33,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:33,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096305579] [2022-07-12 01:48:33,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096305579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:33,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:48:33,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:48:33,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639657733] [2022-07-12 01:48:33,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:33,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:48:33,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:33,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:48:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:48:33,371 INFO L87 Difference]: Start difference. First operand 11367 states and 15088 transitions. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 01:48:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:48:38,776 INFO L93 Difference]: Finished difference Result 25557 states and 36131 transitions. [2022-07-12 01:48:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:48:38,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 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 520 [2022-07-12 01:48:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:48:38,809 INFO L225 Difference]: With dead ends: 25557 [2022-07-12 01:48:38,810 INFO L226 Difference]: Without dead ends: 16922 [2022-07-12 01:48:38,821 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 01:48:38,822 INFO L413 NwaCegarLoop]: 2759 mSDtfsCounter, 1488 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 1816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 5884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1816 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:48:38,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2936 Invalid, 5884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1816 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-12 01:48:38,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16922 states. [2022-07-12 01:48:38,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16922 to 16876. [2022-07-12 01:48:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16876 states, 16875 states have (on average 1.2959407407407408) internal successors, (21869), 16875 states have internal predecessors, (21869), 0 states have call successors, (0), 0 states 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 01:48:39,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16876 states to 16876 states and 21869 transitions. [2022-07-12 01:48:39,028 INFO L78 Accepts]: Start accepts. Automaton has 16876 states and 21869 transitions. Word has length 520 [2022-07-12 01:48:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:48:39,030 INFO L495 AbstractCegarLoop]: Abstraction has 16876 states and 21869 transitions. [2022-07-12 01:48:39,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 01:48:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 16876 states and 21869 transitions. [2022-07-12 01:48:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2022-07-12 01:48:39,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:39,040 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:39,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:48:39,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 886670355, now seen corresponding path program 1 times [2022-07-12 01:48:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:39,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682573110] [2022-07-12 01:48:39,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:39,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 83 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:48:39,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682573110] [2022-07-12 01:48:39,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682573110] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:48:39,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070050468] [2022-07-12 01:48:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:39,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:48:39,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:48:39,315 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 01:48:39,317 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 01:48:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:39,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:48:39,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:48:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:48:39,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:48:39,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070050468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:39,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:48:39,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-12 01:48:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580075745] [2022-07-12 01:48:39,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:39,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:48:39,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:48:39,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:48:39,653 INFO L87 Difference]: Start difference. First operand 16876 states and 21869 transitions. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 01:48:45,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:48:45,122 INFO L93 Difference]: Finished difference Result 43303 states and 57896 transitions. [2022-07-12 01:48:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:48:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 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 589 [2022-07-12 01:48:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:48:45,201 INFO L225 Difference]: With dead ends: 43303 [2022-07-12 01:48:45,202 INFO L226 Difference]: Without dead ends: 29159 [2022-07-12 01:48:45,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:48:45,222 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2533 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:48:45,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 816 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-12 01:48:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29159 states. [2022-07-12 01:48:45,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29159 to 29155. [2022-07-12 01:48:45,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29155 states, 29154 states have (on average 1.297592097139329) internal successors, (37830), 29154 states have internal predecessors, (37830), 0 states have call successors, (0), 0 states 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 01:48:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29155 states to 29155 states and 37830 transitions. [2022-07-12 01:48:45,554 INFO L78 Accepts]: Start accepts. Automaton has 29155 states and 37830 transitions. Word has length 589 [2022-07-12 01:48:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:48:45,555 INFO L495 AbstractCegarLoop]: Abstraction has 29155 states and 37830 transitions. [2022-07-12 01:48:45,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states 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 01:48:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 29155 states and 37830 transitions. [2022-07-12 01:48:45,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2022-07-12 01:48:45,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:45,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:45,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 01:48:45,776 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,SelfDestructingSolverStorable5 [2022-07-12 01:48:45,776 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:45,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1669236189, now seen corresponding path program 1 times [2022-07-12 01:48:45,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:45,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130865703] [2022-07-12 01:48:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:45,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 61 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-12 01:48:46,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:46,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130865703] [2022-07-12 01:48:46,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130865703] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:48:46,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639327515] [2022-07-12 01:48:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:46,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:48:46,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:48:46,055 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 01:48:46,056 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 01:48:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:46,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:48:46,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:48:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:48:46,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:48:46,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639327515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:46,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:48:46,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-12 01:48:46,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283441569] [2022-07-12 01:48:46,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:46,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:48:46,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:48:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:48:46,328 INFO L87 Difference]: Start difference. First operand 29155 states and 37830 transitions. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states 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 01:48:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:48:51,908 INFO L93 Difference]: Finished difference Result 77415 states and 102356 transitions. [2022-07-12 01:48:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:48:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 642 [2022-07-12 01:48:51,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:48:51,969 INFO L225 Difference]: With dead ends: 77415 [2022-07-12 01:48:51,969 INFO L226 Difference]: Without dead ends: 50992 [2022-07-12 01:48:51,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:48:51,999 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1544 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:48:52,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1676 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-12 01:48:52,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50992 states. [2022-07-12 01:48:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50992 to 46896. [2022-07-12 01:48:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46896 states, 46895 states have (on average 1.2159505277748162) internal successors, (57022), 46895 states have internal predecessors, (57022), 0 states have call successors, (0), 0 states 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 01:48:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46896 states to 46896 states and 57022 transitions. [2022-07-12 01:48:52,512 INFO L78 Accepts]: Start accepts. Automaton has 46896 states and 57022 transitions. Word has length 642 [2022-07-12 01:48:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:48:52,513 INFO L495 AbstractCegarLoop]: Abstraction has 46896 states and 57022 transitions. [2022-07-12 01:48:52,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states 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 01:48:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 46896 states and 57022 transitions. [2022-07-12 01:48:52,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2022-07-12 01:48:52,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:48:52,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:52,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:48:52,727 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,SelfDestructingSolverStorable6 [2022-07-12 01:48:52,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:48:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:48:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash -546966929, now seen corresponding path program 1 times [2022-07-12 01:48:52,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:48:52,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385425589] [2022-07-12 01:48:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:48:52,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:48:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:48:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-12 01:48:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:48:52,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385425589] [2022-07-12 01:48:52,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385425589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:48:52,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:48:52,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:48:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096051694] [2022-07-12 01:48:52,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:48:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:48:52,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:48:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:48:52,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:48:52,999 INFO L87 Difference]: Start difference. First operand 46896 states and 57022 transitions. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 01:49:02,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:49:02,947 INFO L93 Difference]: Finished difference Result 151284 states and 187638 transitions. [2022-07-12 01:49:02,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:49:02,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 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 732 [2022-07-12 01:49:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:49:03,088 INFO L225 Difference]: With dead ends: 151284 [2022-07-12 01:49:03,088 INFO L226 Difference]: Without dead ends: 107120 [2022-07-12 01:49:03,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 01:49:03,135 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 3559 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 8275 mSolverCounterSat, 3375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3559 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 11650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3375 IncrementalHoareTripleChecker+Valid, 8275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:49:03,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3559 Valid, 966 Invalid, 11650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3375 Valid, 8275 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-07-12 01:49:03,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107120 states. [2022-07-12 01:49:04,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107120 to 102938. [2022-07-12 01:49:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102938 states, 102937 states have (on average 1.1985389121501502) internal successors, (123374), 102937 states have internal predecessors, (123374), 0 states have call successors, (0), 0 states 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 01:49:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102938 states to 102938 states and 123374 transitions. [2022-07-12 01:49:04,442 INFO L78 Accepts]: Start accepts. Automaton has 102938 states and 123374 transitions. Word has length 732 [2022-07-12 01:49:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:49:04,443 INFO L495 AbstractCegarLoop]: Abstraction has 102938 states and 123374 transitions. [2022-07-12 01:49:04,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 01:49:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 102938 states and 123374 transitions. [2022-07-12 01:49:04,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2022-07-12 01:49:04,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:49:04,451 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:04,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 01:49:04,452 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:49:04,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:49:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 152940391, now seen corresponding path program 1 times [2022-07-12 01:49:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:49:04,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514093123] [2022-07-12 01:49:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:49:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:49:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:49:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-07-12 01:49:04,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:49:04,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514093123] [2022-07-12 01:49:04,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514093123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:49:04,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:49:04,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:49:04,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829417853] [2022-07-12 01:49:04,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:49:04,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:49:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:49:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:49:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:49:04,736 INFO L87 Difference]: Start difference. First operand 102938 states and 123374 transitions. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 01:49:11,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:49:11,005 INFO L93 Difference]: Finished difference Result 238646 states and 286756 transitions. [2022-07-12 01:49:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:49:11,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 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 863 [2022-07-12 01:49:11,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:49:11,204 INFO L225 Difference]: With dead ends: 238646 [2022-07-12 01:49:11,204 INFO L226 Difference]: Without dead ends: 138440 [2022-07-12 01:49:11,412 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 01:49:11,414 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 1372 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3923 mSolverCounterSat, 2088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2088 IncrementalHoareTripleChecker+Valid, 3923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:49:11,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 710 Invalid, 6011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2088 Valid, 3923 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-12 01:49:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138440 states. [2022-07-12 01:49:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138440 to 137062. [2022-07-12 01:49:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137062 states, 137061 states have (on average 1.1735942390614398) internal successors, (160854), 137061 states have internal predecessors, (160854), 0 states have call successors, (0), 0 states 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 01:49:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137062 states to 137062 states and 160854 transitions. [2022-07-12 01:49:13,153 INFO L78 Accepts]: Start accepts. Automaton has 137062 states and 160854 transitions. Word has length 863 [2022-07-12 01:49:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:49:13,154 INFO L495 AbstractCegarLoop]: Abstraction has 137062 states and 160854 transitions. [2022-07-12 01:49:13,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 2 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 01:49:13,154 INFO L276 IsEmpty]: Start isEmpty. Operand 137062 states and 160854 transitions. [2022-07-12 01:49:13,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 894 [2022-07-12 01:49:13,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:49:13,177 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:13,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:49:13,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:49:13,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:49:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash 235845420, now seen corresponding path program 1 times [2022-07-12 01:49:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:49:13,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947547859] [2022-07-12 01:49:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:49:13,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:49:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:49:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-12 01:49:13,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:49:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947547859] [2022-07-12 01:49:13,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947547859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:49:13,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:49:13,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:49:13,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984898973] [2022-07-12 01:49:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:49:13,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:49:13,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:49:13,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:49:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:49:13,565 INFO L87 Difference]: Start difference. First operand 137062 states and 160854 transitions. Second operand has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 01:49:23,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:49:23,692 INFO L93 Difference]: Finished difference Result 338277 states and 405795 transitions. [2022-07-12 01:49:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:49:23,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 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 893 [2022-07-12 01:49:23,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:49:24,017 INFO L225 Difference]: With dead ends: 338277 [2022-07-12 01:49:24,017 INFO L226 Difference]: Without dead ends: 203947 [2022-07-12 01:49:24,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 01:49:24,208 INFO L413 NwaCegarLoop]: 2907 mSDtfsCounter, 2920 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8913 mSolverCounterSat, 1590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 10503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1590 IncrementalHoareTripleChecker+Valid, 8913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:49:24,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2920 Valid, 3150 Invalid, 10503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1590 Valid, 8913 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-07-12 01:49:24,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203947 states. [2022-07-12 01:49:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203947 to 182098. [2022-07-12 01:49:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182098 states, 182097 states have (on average 1.1697996122945462) internal successors, (213017), 182097 states have internal predecessors, (213017), 0 states have call successors, (0), 0 states 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 01:49:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182098 states to 182098 states and 213017 transitions. [2022-07-12 01:49:26,667 INFO L78 Accepts]: Start accepts. Automaton has 182098 states and 213017 transitions. Word has length 893 [2022-07-12 01:49:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:49:26,667 INFO L495 AbstractCegarLoop]: Abstraction has 182098 states and 213017 transitions. [2022-07-12 01:49:26,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 01:49:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 182098 states and 213017 transitions. [2022-07-12 01:49:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2022-07-12 01:49:26,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:49:26,690 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:26,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:49:26,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:49:26,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:49:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1264779233, now seen corresponding path program 1 times [2022-07-12 01:49:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:49:26,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031573771] [2022-07-12 01:49:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:49:26,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:49:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:49:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-07-12 01:49:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:49:27,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031573771] [2022-07-12 01:49:27,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031573771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:49:27,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:49:27,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:49:27,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999462354] [2022-07-12 01:49:27,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:49:27,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:49:27,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:49:27,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:49:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:49:27,157 INFO L87 Difference]: Start difference. First operand 182098 states and 213017 transitions. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 01:49:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:49:34,362 INFO L93 Difference]: Finished difference Result 431141 states and 506854 transitions. [2022-07-12 01:49:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:49:34,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 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 991 [2022-07-12 01:49:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:49:34,727 INFO L225 Difference]: With dead ends: 431141 [2022-07-12 01:49:34,727 INFO L226 Difference]: Without dead ends: 251775 [2022-07-12 01:49:34,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 01:49:34,804 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 1575 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4239 mSolverCounterSat, 2278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 6517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2278 IncrementalHoareTripleChecker+Valid, 4239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:49:34,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 617 Invalid, 6517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2278 Valid, 4239 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-12 01:49:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251775 states. [2022-07-12 01:49:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251775 to 242149. [2022-07-12 01:49:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242149 states, 242148 states have (on average 1.1797206666997042) internal successors, (285667), 242148 states have internal predecessors, (285667), 0 states have call successors, (0), 0 states 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 01:49:38,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242149 states to 242149 states and 285667 transitions. [2022-07-12 01:49:38,213 INFO L78 Accepts]: Start accepts. Automaton has 242149 states and 285667 transitions. Word has length 991 [2022-07-12 01:49:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:49:38,214 INFO L495 AbstractCegarLoop]: Abstraction has 242149 states and 285667 transitions. [2022-07-12 01:49:38,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 01:49:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 242149 states and 285667 transitions. [2022-07-12 01:49:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2022-07-12 01:49:38,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:49:38,225 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:38,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:49:38,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:49:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:49:38,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1959240637, now seen corresponding path program 1 times [2022-07-12 01:49:38,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:49:38,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297724165] [2022-07-12 01:49:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:49:38,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:49:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:49:38,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 498 proven. 485 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-12 01:49:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:49:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297724165] [2022-07-12 01:49:38,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297724165] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:49:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574056251] [2022-07-12 01:49:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:49:38,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:49:38,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:49:38,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:49:38,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 01:49:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:49:39,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:49:39,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:49:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2022-07-12 01:49:39,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:49:39,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574056251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:49:39,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:49:39,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-07-12 01:49:39,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505376267] [2022-07-12 01:49:39,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:49:39,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:49:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:49:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:49:39,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:49:39,282 INFO L87 Difference]: Start difference. First operand 242149 states and 285667 transitions. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 01:49:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:49:46,268 INFO L93 Difference]: Finished difference Result 538899 states and 634948 transitions. [2022-07-12 01:49:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:49:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 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 1015 [2022-07-12 01:49:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:49:47,039 INFO L225 Difference]: With dead ends: 538899 [2022-07-12 01:49:47,039 INFO L226 Difference]: Without dead ends: 299482 [2022-07-12 01:49:47,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 1016 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 01:49:47,133 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1466 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4732 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 5461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 4732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:49:47,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1528 Invalid, 5461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 4732 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-12 01:49:47,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299482 states. [2022-07-12 01:49:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299482 to 287192. [2022-07-12 01:49:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287192 states, 287191 states have (on average 1.1372988707863407) internal successors, (326622), 287191 states have internal predecessors, (326622), 0 states have call successors, (0), 0 states 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 01:49:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287192 states to 287192 states and 326622 transitions. [2022-07-12 01:49:51,156 INFO L78 Accepts]: Start accepts. Automaton has 287192 states and 326622 transitions. Word has length 1015 [2022-07-12 01:49:51,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:49:51,157 INFO L495 AbstractCegarLoop]: Abstraction has 287192 states and 326622 transitions. [2022-07-12 01:49:51,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 01:49:51,157 INFO L276 IsEmpty]: Start isEmpty. Operand 287192 states and 326622 transitions. [2022-07-12 01:49:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2022-07-12 01:49:51,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:49:51,167 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:49:51,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 01:49:51,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:49:51,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:49:51,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:49:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -766447917, now seen corresponding path program 1 times [2022-07-12 01:49:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:49:51,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149795710] [2022-07-12 01:49:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:49:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:49:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:49:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-12 01:49:52,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:49:52,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149795710] [2022-07-12 01:49:52,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149795710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:49:52,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:49:52,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:49:52,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095727172] [2022-07-12 01:49:52,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:49:52,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:49:52,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:49:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:49:52,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:49:52,053 INFO L87 Difference]: Start difference. First operand 287192 states and 326622 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 01:49:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:49:58,940 INFO L93 Difference]: Finished difference Result 630353 states and 718321 transitions. [2022-07-12 01:49:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:49:58,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 1016 [2022-07-12 01:49:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:49:59,456 INFO L225 Difference]: With dead ends: 630353 [2022-07-12 01:49:59,457 INFO L226 Difference]: Without dead ends: 336336 [2022-07-12 01:49:59,616 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 01:49:59,616 INFO L413 NwaCegarLoop]: 2926 mSDtfsCounter, 1335 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4370 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 5126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 4370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:49:59,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 3099 Invalid, 5126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 4370 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-12 01:49:59,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336336 states. [2022-07-12 01:50:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336336 to 322669. [2022-07-12 01:50:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322669 states, 322668 states have (on average 1.119856942739906) internal successors, (361342), 322668 states have internal predecessors, (361342), 0 states have call successors, (0), 0 states 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 01:50:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322669 states to 322669 states and 361342 transitions. [2022-07-12 01:50:04,254 INFO L78 Accepts]: Start accepts. Automaton has 322669 states and 361342 transitions. Word has length 1016 [2022-07-12 01:50:04,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:50:04,254 INFO L495 AbstractCegarLoop]: Abstraction has 322669 states and 361342 transitions. [2022-07-12 01:50:04,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 01:50:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 322669 states and 361342 transitions. [2022-07-12 01:50:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2022-07-12 01:50:04,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:50:04,271 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:50:04,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:50:04,272 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:50:04,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:50:04,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1559397980, now seen corresponding path program 1 times [2022-07-12 01:50:04,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:50:04,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604695570] [2022-07-12 01:50:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:50:04,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:50:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:50:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 885 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-07-12 01:50:04,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:50:04,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604695570] [2022-07-12 01:50:04,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604695570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:50:04,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:50:04,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:50:04,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883898845] [2022-07-12 01:50:04,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:50:04,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:50:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:50:04,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:50:04,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:50:04,648 INFO L87 Difference]: Start difference. First operand 322669 states and 361342 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 01:50:11,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:50:11,438 INFO L93 Difference]: Finished difference Result 649438 states and 726932 transitions. [2022-07-12 01:50:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:50:11,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 1059 [2022-07-12 01:50:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:50:11,929 INFO L225 Difference]: With dead ends: 649438 [2022-07-12 01:50:11,930 INFO L226 Difference]: Without dead ends: 329501 [2022-07-12 01:50:12,491 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 01:50:12,492 INFO L413 NwaCegarLoop]: 2804 mSDtfsCounter, 1486 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 1452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 5052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1452 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:50:12,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 2965 Invalid, 5052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1452 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-12 01:50:12,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329501 states.