./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.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 53180871b18e463a1d4eb59b77dae8653e4e8db66fa1452414a5a766458fd1e7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:30:03,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:30:03,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:30:03,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:30:03,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:30:03,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:30:03,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:30:03,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:30:03,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:30:03,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:30:03,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:30:03,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:30:03,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:30:03,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:30:03,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:30:03,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:30:03,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:30:03,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:30:03,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:30:03,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:30:03,681 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:30:03,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:30:03,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:30:03,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:30:03,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:30:03,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:30:03,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:30:03,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:30:03,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:30:03,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:30:03,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:30:03,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:30:03,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:30:03,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:30:03,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:30:03,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:30:03,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:30:03,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:30:03,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:30:03,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:30:03,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:30:03,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:30:03,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:30:03,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:30:03,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:30:03,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:30:03,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:30:03,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:30:03,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:30:03,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:30:03,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:30:03,739 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:30:03,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:30:03,740 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:30:03,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:30:03,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:30:03,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:30:03,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:30:03,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:30:03,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:30:03,742 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:30:03,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:30:03,742 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:30:03,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:30:03,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:30:03,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:30:03,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:30:03,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:30:03,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:30:03,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:30:03,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:30:03,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:30:03,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:30:03,744 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:30:03,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:30:03,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:30:03,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53180871b18e463a1d4eb59b77dae8653e4e8db66fa1452414a5a766458fd1e7 [2022-07-22 20:30:03,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:30:03,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:30:03,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:30:03,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:30:03,984 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:30:03,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-07-22 20:30:04,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a41d939b/a27cbfb0d2864f81b0f488f4375160a8/FLAG928806dc2 [2022-07-22 20:30:04,777 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:30:04,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-07-22 20:30:04,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a41d939b/a27cbfb0d2864f81b0f488f4375160a8/FLAG928806dc2 [2022-07-22 20:30:05,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a41d939b/a27cbfb0d2864f81b0f488f4375160a8 [2022-07-22 20:30:05,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:30:05,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:30:05,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:30:05,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:30:05,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:30:05,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:30:05" (1/1) ... [2022-07-22 20:30:05,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3298f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:05, skipping insertion in model container [2022-07-22 20:30:05,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:30:05" (1/1) ... [2022-07-22 20:30:05,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:30:05,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:30:05,553 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[11640,11653] [2022-07-22 20:30:05,598 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[19388,19401] [2022-07-22 20:30:06,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:30:06,247 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:30:06,281 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[11640,11653] [2022-07-22 20:30:06,289 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/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[19388,19401] [2022-07-22 20:30:06,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:30:06,681 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:30:06,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06 WrapperNode [2022-07-22 20:30:06,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:30:06,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:30:06,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:30:06,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:30:06,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:06,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,180 INFO L137 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5090 [2022-07-22 20:30:07,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:30:07,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:30:07,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:30:07,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:30:07,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:30:07,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:30:07,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:30:07,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:30:07,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (1/1) ... [2022-07-22 20:30:07,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:30:07,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:30:07,725 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) [2022-07-22 20:30:07,776 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 [2022-07-22 20:30:07,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:30:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:30:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:30:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:30:07,954 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:30:07,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:30:11,519 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:30:11,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:30:11,538 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 20:30:11,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:30:11 BoogieIcfgContainer [2022-07-22 20:30:11,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:30:11,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:30:11,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:30:11,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:30:11,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:30:05" (1/3) ... [2022-07-22 20:30:11,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6902e426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:30:11, skipping insertion in model container [2022-07-22 20:30:11,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:30:06" (2/3) ... [2022-07-22 20:30:11,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6902e426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:30:11, skipping insertion in model container [2022-07-22 20:30:11,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:30:11" (3/3) ... [2022-07-22 20:30:11,551 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c [2022-07-22 20:30:11,563 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:30:11,564 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:30:11,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:30:11,648 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@58f1471e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2164b6d [2022-07-22 20:30:11,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:30:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 20:30:11,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:11,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:11,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash -441366565, now seen corresponding path program 1 times [2022-07-22 20:30:11,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:11,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379233049] [2022-07-22 20:30:11,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:11,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:11,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:11,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379233049] [2022-07-22 20:30:11,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379233049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:11,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:11,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 20:30:11,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356950696] [2022-07-22 20:30:11,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:11,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 20:30:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:11,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 20:30:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:30:11,867 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 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 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:11,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:11,949 INFO L93 Difference]: Finished difference Result 1781 states and 3374 transitions. [2022-07-22 20:30:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 20:30:11,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-07-22 20:30:11,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:11,966 INFO L225 Difference]: With dead ends: 1781 [2022-07-22 20:30:11,967 INFO L226 Difference]: Without dead ends: 843 [2022-07-22 20:30:11,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 20:30:11,975 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:11,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-07-22 20:30:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-07-22 20:30:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8894173602853745) internal successors, (1589), 842 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1589 transitions. [2022-07-22 20:30:12,041 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1589 transitions. Word has length 34 [2022-07-22 20:30:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:12,042 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1589 transitions. [2022-07-22 20:30:12,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1589 transitions. [2022-07-22 20:30:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-22 20:30:12,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:12,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:12,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:30:12,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:12,045 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2022-07-22 20:30:12,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:12,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406265747] [2022-07-22 20:30:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:12,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:12,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:12,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:12,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406265747] [2022-07-22 20:30:12,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406265747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:12,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:12,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:30:12,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417256354] [2022-07-22 20:30:12,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:12,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:30:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:12,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:30:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:30:12,160 INFO L87 Difference]: Start difference. First operand 843 states and 1589 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:12,277 INFO L93 Difference]: Finished difference Result 899 states and 1675 transitions. [2022-07-22 20:30:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:30:12,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-07-22 20:30:12,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:12,282 INFO L225 Difference]: With dead ends: 899 [2022-07-22 20:30:12,282 INFO L226 Difference]: Without dead ends: 843 [2022-07-22 20:30:12,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:12,285 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:12,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-07-22 20:30:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 843. [2022-07-22 20:30:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 841 states have (on average 1.8525564803804995) internal successors, (1558), 842 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1558 transitions. [2022-07-22 20:30:12,320 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1558 transitions. Word has length 34 [2022-07-22 20:30:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:12,320 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 1558 transitions. [2022-07-22 20:30:12,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,322 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1558 transitions. [2022-07-22 20:30:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:30:12,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:12,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:12,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:30:12,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:12,340 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2022-07-22 20:30:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:12,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552205277] [2022-07-22 20:30:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:12,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:12,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:12,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552205277] [2022-07-22 20:30:12,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552205277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:12,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:12,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:30:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676448334] [2022-07-22 20:30:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:12,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:30:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:30:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:30:12,430 INFO L87 Difference]: Start difference. First operand 843 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:12,513 INFO L93 Difference]: Finished difference Result 941 states and 1712 transitions. [2022-07-22 20:30:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:30:12,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 20:30:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:12,521 INFO L225 Difference]: With dead ends: 941 [2022-07-22 20:30:12,521 INFO L226 Difference]: Without dead ends: 889 [2022-07-22 20:30:12,523 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 [2022-07-22 20:30:12,527 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:12,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-07-22 20:30:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 887. [2022-07-22 20:30:12,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 885 states have (on average 1.83954802259887) internal successors, (1628), 886 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1628 transitions. [2022-07-22 20:30:12,549 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1628 transitions. Word has length 64 [2022-07-22 20:30:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:12,549 INFO L495 AbstractCegarLoop]: Abstraction has 887 states and 1628 transitions. [2022-07-22 20:30:12,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,550 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1628 transitions. [2022-07-22 20:30:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:30:12,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:12,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:12,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:30:12,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:12,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:12,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2022-07-22 20:30:12,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:12,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406197745] [2022-07-22 20:30:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:12,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:12,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:12,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406197745] [2022-07-22 20:30:12,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406197745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:12,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:12,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:30:12,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743296447] [2022-07-22 20:30:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:30:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:30:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:30:12,658 INFO L87 Difference]: Start difference. First operand 887 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:12,689 INFO L93 Difference]: Finished difference Result 1067 states and 1912 transitions. [2022-07-22 20:30:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:30:12,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 20:30:12,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:12,694 INFO L225 Difference]: With dead ends: 1067 [2022-07-22 20:30:12,694 INFO L226 Difference]: Without dead ends: 971 [2022-07-22 20:30:12,695 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 [2022-07-22 20:30:12,695 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:12,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:12,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-07-22 20:30:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 969. [2022-07-22 20:30:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 967 states have (on average 1.8169596690796277) internal successors, (1757), 968 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1757 transitions. [2022-07-22 20:30:12,716 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1757 transitions. Word has length 64 [2022-07-22 20:30:12,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:12,717 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1757 transitions. [2022-07-22 20:30:12,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,717 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1757 transitions. [2022-07-22 20:30:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:30:12,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:12,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:12,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:30:12,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:12,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:12,719 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2022-07-22 20:30:12,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:12,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652153141] [2022-07-22 20:30:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:12,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:12,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652153141] [2022-07-22 20:30:12,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652153141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:12,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:12,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:30:12,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484454289] [2022-07-22 20:30:12,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:12,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:30:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:30:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:30:12,773 INFO L87 Difference]: Start difference. First operand 969 states and 1757 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:12,804 INFO L93 Difference]: Finished difference Result 1301 states and 2279 transitions. [2022-07-22 20:30:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:30:12,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 20:30:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:12,810 INFO L225 Difference]: With dead ends: 1301 [2022-07-22 20:30:12,810 INFO L226 Difference]: Without dead ends: 1123 [2022-07-22 20:30:12,811 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 [2022-07-22 20:30:12,811 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:12,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2022-07-22 20:30:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1121. [2022-07-22 20:30:12,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1119 states have (on average 1.7810545129579982) internal successors, (1993), 1120 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1993 transitions. [2022-07-22 20:30:12,838 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1993 transitions. Word has length 64 [2022-07-22 20:30:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:12,839 INFO L495 AbstractCegarLoop]: Abstraction has 1121 states and 1993 transitions. [2022-07-22 20:30:12,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1993 transitions. [2022-07-22 20:30:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:30:12,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:12,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:12,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:30:12,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:12,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2022-07-22 20:30:12,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:12,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772886434] [2022-07-22 20:30:12,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:12,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:12,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:12,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:12,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772886434] [2022-07-22 20:30:12,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772886434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:12,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:12,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:30:12,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470505120] [2022-07-22 20:30:12,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:12,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:30:12,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:12,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:30:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:30:12,890 INFO L87 Difference]: Start difference. First operand 1121 states and 1993 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:12,928 INFO L93 Difference]: Finished difference Result 1733 states and 2947 transitions. [2022-07-22 20:30:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:30:12,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 20:30:12,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:12,935 INFO L225 Difference]: With dead ends: 1733 [2022-07-22 20:30:12,935 INFO L226 Difference]: Without dead ends: 1403 [2022-07-22 20:30:12,936 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 [2022-07-22 20:30:12,937 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:12,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:12,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-07-22 20:30:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2022-07-22 20:30:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1399 states have (on average 1.7305218012866332) internal successors, (2421), 1400 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2421 transitions. [2022-07-22 20:30:12,975 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2421 transitions. Word has length 64 [2022-07-22 20:30:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:12,975 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 2421 transitions. [2022-07-22 20:30:12,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2421 transitions. [2022-07-22 20:30:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:30:12,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:12,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:12,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:30:12,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:12,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2022-07-22 20:30:12,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:12,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525539027] [2022-07-22 20:30:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:13,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525539027] [2022-07-22 20:30:13,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525539027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:13,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:13,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:30:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891205264] [2022-07-22 20:30:13,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:13,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:30:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:13,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:30:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:30:13,021 INFO L87 Difference]: Start difference. First operand 1401 states and 2421 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:13,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:13,076 INFO L93 Difference]: Finished difference Result 2525 states and 4151 transitions. [2022-07-22 20:30:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:30:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 20:30:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:13,084 INFO L225 Difference]: With dead ends: 2525 [2022-07-22 20:30:13,085 INFO L226 Difference]: Without dead ends: 1915 [2022-07-22 20:30:13,086 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 [2022-07-22 20:30:13,087 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:13,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:13,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2022-07-22 20:30:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1913. [2022-07-22 20:30:13,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1911 states have (on average 1.6687598116169544) internal successors, (3189), 1912 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 3189 transitions. [2022-07-22 20:30:13,149 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 3189 transitions. Word has length 64 [2022-07-22 20:30:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:13,149 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 3189 transitions. [2022-07-22 20:30:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 3189 transitions. [2022-07-22 20:30:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-22 20:30:13,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:13,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:13,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:30:13,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:13,151 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2022-07-22 20:30:13,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:13,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15207753] [2022-07-22 20:30:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:13,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:13,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15207753] [2022-07-22 20:30:13,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15207753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:13,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:13,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:30:13,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187876097] [2022-07-22 20:30:13,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:13,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:30:13,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:30:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:13,255 INFO L87 Difference]: Start difference. First operand 1913 states and 3189 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:14,021 INFO L93 Difference]: Finished difference Result 13133 states and 20319 transitions. [2022-07-22 20:30:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:30:14,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-22 20:30:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:14,070 INFO L225 Difference]: With dead ends: 13133 [2022-07-22 20:30:14,071 INFO L226 Difference]: Without dead ends: 12011 [2022-07-22 20:30:14,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:30:14,081 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:14,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12011 states. [2022-07-22 20:30:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12011 to 3033. [2022-07-22 20:30:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 3031 states have (on average 1.5958429561200924) internal successors, (4837), 3032 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 4837 transitions. [2022-07-22 20:30:14,385 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 4837 transitions. Word has length 64 [2022-07-22 20:30:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:14,386 INFO L495 AbstractCegarLoop]: Abstraction has 3033 states and 4837 transitions. [2022-07-22 20:30:14,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:14,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 4837 transitions. [2022-07-22 20:30:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:30:14,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:14,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:14,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:30:14,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:14,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2022-07-22 20:30:14,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:14,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446758905] [2022-07-22 20:30:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:14,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:14,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446758905] [2022-07-22 20:30:14,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446758905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:14,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:14,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:30:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247848973] [2022-07-22 20:30:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:14,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:30:14,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:30:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 20:30:14,465 INFO L87 Difference]: Start difference. First operand 3033 states and 4837 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:14,741 INFO L93 Difference]: Finished difference Result 6319 states and 9753 transitions. [2022-07-22 20:30:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:30:14,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-22 20:30:14,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:14,756 INFO L225 Difference]: With dead ends: 6319 [2022-07-22 20:30:14,757 INFO L226 Difference]: Without dead ends: 4077 [2022-07-22 20:30:14,760 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 [2022-07-22 20:30:14,761 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:14,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2022-07-22 20:30:14,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 4075. [2022-07-22 20:30:14,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.557328750306899) internal successors, (6343), 4074 states have internal predecessors, (6343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6343 transitions. [2022-07-22 20:30:14,994 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6343 transitions. Word has length 66 [2022-07-22 20:30:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:14,995 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 6343 transitions. [2022-07-22 20:30:14,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6343 transitions. [2022-07-22 20:30:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:30:14,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:14,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:14,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:30:14,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:14,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:14,997 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2022-07-22 20:30:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:14,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546076860] [2022-07-22 20:30:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:15,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:15,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546076860] [2022-07-22 20:30:15,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546076860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:15,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:15,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:30:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684878135] [2022-07-22 20:30:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:30:15,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:30:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:15,159 INFO L87 Difference]: Start difference. First operand 4075 states and 6343 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:15,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:15,531 INFO L93 Difference]: Finished difference Result 7359 states and 11209 transitions. [2022-07-22 20:30:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:30:15,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-22 20:30:15,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:15,546 INFO L225 Difference]: With dead ends: 7359 [2022-07-22 20:30:15,546 INFO L226 Difference]: Without dead ends: 4077 [2022-07-22 20:30:15,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:30:15,552 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1674 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:15,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 1946 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4077 states. [2022-07-22 20:30:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4077 to 4075. [2022-07-22 20:30:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5455438251902773) internal successors, (6295), 4074 states have internal predecessors, (6295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6295 transitions. [2022-07-22 20:30:15,786 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6295 transitions. Word has length 66 [2022-07-22 20:30:15,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:15,787 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 6295 transitions. [2022-07-22 20:30:15,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6295 transitions. [2022-07-22 20:30:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:30:15,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:15,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:15,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:30:15,789 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:15,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2022-07-22 20:30:15,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:15,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093421749] [2022-07-22 20:30:15,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:15,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:15,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:15,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093421749] [2022-07-22 20:30:15,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093421749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:15,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:15,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:30:15,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436160439] [2022-07-22 20:30:15,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:15,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:30:15,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:15,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:30:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:30:15,863 INFO L87 Difference]: Start difference. First operand 4075 states and 6295 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:16,228 INFO L93 Difference]: Finished difference Result 7357 states and 11112 transitions. [2022-07-22 20:30:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:30:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 20:30:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:16,239 INFO L225 Difference]: With dead ends: 7357 [2022-07-22 20:30:16,239 INFO L226 Difference]: Without dead ends: 4075 [2022-07-22 20:30:16,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:30:16,244 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 4687 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4687 SdHoareTripleChecker+Valid, 3007 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:16,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4687 Valid, 3007 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:16,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2022-07-22 20:30:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4075. [2022-07-22 20:30:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5337589000736558) internal successors, (6247), 4074 states have internal predecessors, (6247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6247 transitions. [2022-07-22 20:30:16,507 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6247 transitions. Word has length 67 [2022-07-22 20:30:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:16,508 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 6247 transitions. [2022-07-22 20:30:16,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6247 transitions. [2022-07-22 20:30:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:30:16,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:16,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:16,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:30:16,510 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2022-07-22 20:30:16,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:16,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824048405] [2022-07-22 20:30:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:16,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:16,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:16,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824048405] [2022-07-22 20:30:16,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824048405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:16,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:16,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:30:16,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674640872] [2022-07-22 20:30:16,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:16,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:30:16,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:30:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:30:16,574 INFO L87 Difference]: Start difference. First operand 4075 states and 6247 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:16,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:16,929 INFO L93 Difference]: Finished difference Result 7357 states and 11016 transitions. [2022-07-22 20:30:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:30:16,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 20:30:16,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:16,938 INFO L225 Difference]: With dead ends: 7357 [2022-07-22 20:30:16,938 INFO L226 Difference]: Without dead ends: 4075 [2022-07-22 20:30:16,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:30:16,944 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 4719 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4719 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:16,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4719 Valid, 3012 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:16,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2022-07-22 20:30:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4075. [2022-07-22 20:30:17,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 4073 states have (on average 1.5219739749570342) internal successors, (6199), 4074 states have internal predecessors, (6199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 6199 transitions. [2022-07-22 20:30:17,239 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 6199 transitions. Word has length 67 [2022-07-22 20:30:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:17,239 INFO L495 AbstractCegarLoop]: Abstraction has 4075 states and 6199 transitions. [2022-07-22 20:30:17,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 6199 transitions. [2022-07-22 20:30:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:30:17,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:17,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:17,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:30:17,241 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:17,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:17,242 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2022-07-22 20:30:17,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:17,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622860547] [2022-07-22 20:30:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:17,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:17,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:17,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622860547] [2022-07-22 20:30:17,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622860547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:17,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:17,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:30:17,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023333804] [2022-07-22 20:30:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:17,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:30:17,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:30:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:30:17,296 INFO L87 Difference]: Start difference. First operand 4075 states and 6199 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:17,897 INFO L93 Difference]: Finished difference Result 6918 states and 10173 transitions. [2022-07-22 20:30:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:30:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 20:30:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:17,911 INFO L225 Difference]: With dead ends: 6918 [2022-07-22 20:30:17,911 INFO L226 Difference]: Without dead ends: 6916 [2022-07-22 20:30:17,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:30:17,914 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 211 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:17,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 6242 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:30:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2022-07-22 20:30:18,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4267. [2022-07-22 20:30:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4267 states, 4265 states have (on average 1.4947245017584994) internal successors, (6375), 4266 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 6375 transitions. [2022-07-22 20:30:18,335 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 6375 transitions. Word has length 67 [2022-07-22 20:30:18,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:18,335 INFO L495 AbstractCegarLoop]: Abstraction has 4267 states and 6375 transitions. [2022-07-22 20:30:18,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 6375 transitions. [2022-07-22 20:30:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:30:18,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:18,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:30:18,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:30:18,337 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:18,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:18,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2064290429, now seen corresponding path program 1 times [2022-07-22 20:30:18,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:18,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954557912] [2022-07-22 20:30:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:30:18,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:18,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954557912] [2022-07-22 20:30:18,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954557912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:18,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:18,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 20:30:18,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754131452] [2022-07-22 20:30:18,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:30:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:30:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:30:18,402 INFO L87 Difference]: Start difference. First operand 4267 states and 6375 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:24,402 INFO L93 Difference]: Finished difference Result 6522 states and 10684 transitions. [2022-07-22 20:30:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 20:30:24,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-22 20:30:24,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:24,415 INFO L225 Difference]: With dead ends: 6522 [2022-07-22 20:30:24,415 INFO L226 Difference]: Without dead ends: 5769 [2022-07-22 20:30:24,417 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 [2022-07-22 20:30:24,418 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2405 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2405 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:24,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2405 Valid, 810 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-22 20:30:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5769 states. [2022-07-22 20:30:24,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5769 to 5769. [2022-07-22 20:30:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5767 states have (on average 1.4719958383908445) internal successors, (8489), 5768 states have internal predecessors, (8489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 8489 transitions. [2022-07-22 20:30:24,778 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 8489 transitions. Word has length 67 [2022-07-22 20:30:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:24,778 INFO L495 AbstractCegarLoop]: Abstraction has 5769 states and 8489 transitions. [2022-07-22 20:30:24,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 8489 transitions. [2022-07-22 20:30:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 20:30:24,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:24,782 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:30:24,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:30:24,782 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2022-07-22 20:30:24,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:24,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722957677] [2022-07-22 20:30:24,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:24,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 20:30:24,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:24,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722957677] [2022-07-22 20:30:24,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722957677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:24,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:24,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:30:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572615985] [2022-07-22 20:30:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:24,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:30:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:30:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:24,853 INFO L87 Difference]: Start difference. First operand 5769 states and 8489 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:26,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:26,388 INFO L93 Difference]: Finished difference Result 23845 states and 33919 transitions. [2022-07-22 20:30:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:30:26,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 95 [2022-07-22 20:30:26,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:26,431 INFO L225 Difference]: With dead ends: 23845 [2022-07-22 20:30:26,432 INFO L226 Difference]: Without dead ends: 20371 [2022-07-22 20:30:26,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:30:26,444 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6581 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6581 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:26,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6581 Valid, 3534 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:26,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20371 states. [2022-07-22 20:30:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20371 to 9241. [2022-07-22 20:30:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9239 states have (on average 1.443554497239961) internal successors, (13337), 9240 states have internal predecessors, (13337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13337 transitions. [2022-07-22 20:30:27,326 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13337 transitions. Word has length 95 [2022-07-22 20:30:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:27,326 INFO L495 AbstractCegarLoop]: Abstraction has 9241 states and 13337 transitions. [2022-07-22 20:30:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13337 transitions. [2022-07-22 20:30:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 20:30:27,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:27,330 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:30:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:30:27,331 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2022-07-22 20:30:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:27,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581758049] [2022-07-22 20:30:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 20:30:27,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:27,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581758049] [2022-07-22 20:30:27,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581758049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:27,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:27,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:30:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882411800] [2022-07-22 20:30:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:27,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:30:27,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:30:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:27,398 INFO L87 Difference]: Start difference. First operand 9241 states and 13337 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:29,118 INFO L93 Difference]: Finished difference Result 27317 states and 38767 transitions. [2022-07-22 20:30:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:30:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 95 [2022-07-22 20:30:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:29,171 INFO L225 Difference]: With dead ends: 27317 [2022-07-22 20:30:29,171 INFO L226 Difference]: Without dead ends: 23843 [2022-07-22 20:30:29,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:30:29,187 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6478 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6478 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:29,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6478 Valid, 3598 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23843 states. [2022-07-22 20:30:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23843 to 14457. [2022-07-22 20:30:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14455 states have (on average 1.4229678312002767) internal successors, (20569), 14456 states have internal predecessors, (20569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 20569 transitions. [2022-07-22 20:30:30,387 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 20569 transitions. Word has length 95 [2022-07-22 20:30:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:30,387 INFO L495 AbstractCegarLoop]: Abstraction has 14457 states and 20569 transitions. [2022-07-22 20:30:30,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 20569 transitions. [2022-07-22 20:30:30,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 20:30:30,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:30,392 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:30:30,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:30:30,393 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:30,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2022-07-22 20:30:30,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:30,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682234793] [2022-07-22 20:30:30,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:30,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 20:30:30,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:30,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682234793] [2022-07-22 20:30:30,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682234793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:30,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:30,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:30:30,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61008799] [2022-07-22 20:30:30,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:30,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:30:30,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:30:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:30,568 INFO L87 Difference]: Start difference. First operand 14457 states and 20569 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:33,110 INFO L93 Difference]: Finished difference Result 30789 states and 43615 transitions. [2022-07-22 20:30:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:30:33,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 95 [2022-07-22 20:30:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:33,160 INFO L225 Difference]: With dead ends: 30789 [2022-07-22 20:30:33,161 INFO L226 Difference]: Without dead ends: 27315 [2022-07-22 20:30:33,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:30:33,177 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6494 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:33,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6494 Valid, 3610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27315 states. [2022-07-22 20:30:34,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27315 to 17929. [2022-07-22 20:30:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 17927 states have (on average 1.417805544709098) internal successors, (25417), 17928 states have internal predecessors, (25417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25417 transitions. [2022-07-22 20:30:34,860 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25417 transitions. Word has length 95 [2022-07-22 20:30:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:34,861 INFO L495 AbstractCegarLoop]: Abstraction has 17929 states and 25417 transitions. [2022-07-22 20:30:34,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25417 transitions. [2022-07-22 20:30:34,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 20:30:34,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:34,867 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:30:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:30:34,867 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2022-07-22 20:30:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:34,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499689381] [2022-07-22 20:30:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:34,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 20:30:34,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:34,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499689381] [2022-07-22 20:30:34,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499689381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:34,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:34,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:30:34,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692493466] [2022-07-22 20:30:34,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:34,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:30:34,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:30:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:34,931 INFO L87 Difference]: Start difference. First operand 17929 states and 25417 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:37,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:37,420 INFO L93 Difference]: Finished difference Result 34261 states and 48463 transitions. [2022-07-22 20:30:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:30:37,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 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 95 [2022-07-22 20:30:37,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:37,466 INFO L225 Difference]: With dead ends: 34261 [2022-07-22 20:30:37,466 INFO L226 Difference]: Without dead ends: 30787 [2022-07-22 20:30:37,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:30:37,484 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 6560 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:37,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6560 Valid, 3630 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30787 states. [2022-07-22 20:30:39,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30787 to 21401. [2022-07-22 20:30:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21401 states, 21399 states have (on average 1.4143184260946773) internal successors, (30265), 21400 states have internal predecessors, (30265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21401 states to 21401 states and 30265 transitions. [2022-07-22 20:30:39,789 INFO L78 Accepts]: Start accepts. Automaton has 21401 states and 30265 transitions. Word has length 95 [2022-07-22 20:30:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:39,790 INFO L495 AbstractCegarLoop]: Abstraction has 21401 states and 30265 transitions. [2022-07-22 20:30:39,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 21401 states and 30265 transitions. [2022-07-22 20:30:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-22 20:30:39,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:39,796 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:30:39,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:30:39,797 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:39,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2022-07-22 20:30:39,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:39,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888841080] [2022-07-22 20:30:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:30:39,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:39,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888841080] [2022-07-22 20:30:39,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888841080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:30:39,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:30:39,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:30:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977533166] [2022-07-22 20:30:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:30:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:30:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:30:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:30:39,871 INFO L87 Difference]: Start difference. First operand 21401 states and 30265 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:42,828 INFO L93 Difference]: Finished difference Result 35653 states and 50431 transitions. [2022-07-22 20:30:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:30:42,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 95 [2022-07-22 20:30:42,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:42,880 INFO L225 Difference]: With dead ends: 35653 [2022-07-22 20:30:42,880 INFO L226 Difference]: Without dead ends: 33219 [2022-07-22 20:30:42,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:30:42,893 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 6561 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:42,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6561 Valid, 3543 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:42,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33219 states. [2022-07-22 20:30:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33219 to 23833. [2022-07-22 20:30:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23833 states, 23831 states have (on average 1.4136628760857706) internal successors, (33689), 23832 states have internal predecessors, (33689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23833 states to 23833 states and 33689 transitions. [2022-07-22 20:30:45,157 INFO L78 Accepts]: Start accepts. Automaton has 23833 states and 33689 transitions. Word has length 95 [2022-07-22 20:30:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:30:45,158 INFO L495 AbstractCegarLoop]: Abstraction has 23833 states and 33689 transitions. [2022-07-22 20:30:45,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 23833 states and 33689 transitions. [2022-07-22 20:30:45,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 20:30:45,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:30:45,165 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:30:45,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:30:45,165 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:30:45,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:30:45,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2022-07-22 20:30:45,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:30:45,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079536815] [2022-07-22 20:30:45,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:45,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:30:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:30:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:30:45,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079536815] [2022-07-22 20:30:45,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079536815] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:30:45,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226634725] [2022-07-22 20:30:45,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:30:45,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:30:45,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:30:45,236 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) [2022-07-22 20:30:45,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:30:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:30:45,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 20:30:45,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:30:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:30:45,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:30:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:30:45,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226634725] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:30:45,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:30:45,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-07-22 20:30:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245169488] [2022-07-22 20:30:45,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:30:45,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:30:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:30:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:30:45,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:30:45,890 INFO L87 Difference]: Start difference. First operand 23833 states and 33689 transitions. Second operand has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:30:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:30:52,852 INFO L93 Difference]: Finished difference Result 81022 states and 114579 transitions. [2022-07-22 20:30:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:30:52,853 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 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 96 [2022-07-22 20:30:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:30:52,957 INFO L225 Difference]: With dead ends: 81022 [2022-07-22 20:30:52,957 INFO L226 Difference]: Without dead ends: 65212 [2022-07-22 20:30:52,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:30:52,979 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 3412 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3412 SdHoareTripleChecker+Valid, 6719 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:30:52,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3412 Valid, 6719 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:30:53,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65212 states. [2022-07-22 20:30:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65212 to 64681. [2022-07-22 20:30:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64681 states, 64679 states have (on average 1.3869262047959925) internal successors, (89705), 64680 states have internal predecessors, (89705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:31:00,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64681 states to 64681 states and 89705 transitions. [2022-07-22 20:31:00,036 INFO L78 Accepts]: Start accepts. Automaton has 64681 states and 89705 transitions. Word has length 96 [2022-07-22 20:31:00,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:31:00,036 INFO L495 AbstractCegarLoop]: Abstraction has 64681 states and 89705 transitions. [2022-07-22 20:31:00,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 20:31:00,037 INFO L276 IsEmpty]: Start isEmpty. Operand 64681 states and 89705 transitions. [2022-07-22 20:31:00,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-22 20:31:00,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:31:00,042 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:31:00,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:31:00,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:31:00,267 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:31:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:31:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1408959169, now seen corresponding path program 1 times [2022-07-22 20:31:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:31:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536252968] [2022-07-22 20:31:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:31:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:31:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:31:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:31:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:31:00,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536252968] [2022-07-22 20:31:00,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536252968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:31:00,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989554964] [2022-07-22 20:31:00,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:31:00,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:31:00,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:31:00,428 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) [2022-07-22 20:31:00,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:31:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:31:00,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 20:31:00,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:31:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:31:01,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:31:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:31:01,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989554964] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:31:01,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:31:01,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-07-22 20:31:01,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552768861] [2022-07-22 20:31:01,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:31:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 20:31:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:31:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 20:31:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-07-22 20:31:01,777 INFO L87 Difference]: Start difference. First operand 64681 states and 89705 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 25 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)