./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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.7.ufo.UNBOUNDED.pals+Problem12_label07.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 fdba2ae989c969b8ea983da7229bdc32604e4ef890fc1d03498078fc576fe644 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:06:33,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:06:33,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:06:33,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:06:33,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:06:33,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:06:33,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:06:33,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:06:33,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:06:33,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:06:33,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:06:33,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:06:33,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:06:33,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:06:33,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:06:33,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:06:33,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:06:33,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:06:33,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:06:33,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:06:33,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:06:33,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:06:33,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:06:33,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:06:33,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:06:33,730 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:06:33,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:06:33,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:06:33,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:06:33,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:06:33,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:06:33,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:06:33,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:06:33,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:06:33,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:06:33,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:06:33,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:06:33,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:06:33,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:06:33,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:06:33,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:06:33,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 13:06:33,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:06:33,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:06:33,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:06:33,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:06:33,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:06:33,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:06:33,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:06:33,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:06:33,763 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:06:33,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:06:33,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 13:06:33,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:06:33,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 13:06:33,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:06:33,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:06:33,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:06:33,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:06:33,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 13:06:33,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:06:33,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:06:33,765 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:06:33,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:06:33,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:06:33,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:06:33,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:06:33,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:06:33,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:06:33,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:06:33,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:06:33,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:06:33,768 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:06:33,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:06:33,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:06:33,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:06:33,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdba2ae989c969b8ea983da7229bdc32604e4ef890fc1d03498078fc576fe644 [2021-12-22 13:06:33,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:06:33,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:06:33,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:06:33,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:06:33,956 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:06:33,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c [2021-12-22 13:06:33,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9476cb63d/8ddb5b2d47b848e9a71a04af28d1aad6/FLAG2bacfc717 [2021-12-22 13:06:34,551 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:06:34,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c [2021-12-22 13:06:34,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9476cb63d/8ddb5b2d47b848e9a71a04af28d1aad6/FLAG2bacfc717 [2021-12-22 13:06:34,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9476cb63d/8ddb5b2d47b848e9a71a04af28d1aad6 [2021-12-22 13:06:34,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:06:34,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:06:34,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:06:34,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:06:34,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:06:34,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:06:34" (1/1) ... [2021-12-22 13:06:34,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c298e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:34, skipping insertion in model container [2021-12-22 13:06:34,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:06:34" (1/1) ... [2021-12-22 13:06:34,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:06:35,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:06:35,445 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.7.ufo.UNBOUNDED.pals+Problem12_label07.c[20454,20467] [2021-12-22 13:06:35,475 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.7.ufo.UNBOUNDED.pals+Problem12_label07.c[21296,21309] [2021-12-22 13:06:36,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:06:36,028 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:06:36,059 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.7.ufo.UNBOUNDED.pals+Problem12_label07.c[20454,20467] [2021-12-22 13:06:36,062 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.7.ufo.UNBOUNDED.pals+Problem12_label07.c[21296,21309] [2021-12-22 13:06:36,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:06:36,362 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:06:36,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36 WrapperNode [2021-12-22 13:06:36,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:06:36,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:06:36,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:06:36,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:06:36,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,641 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2021-12-22 13:06:36,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:06:36,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:06:36,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:06:36,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:06:36,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:06:36,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:06:36,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:06:36,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:06:36,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (1/1) ... [2021-12-22 13:06:36,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:06:36,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:06:36,947 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) [2021-12-22 13:06:36,959 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 [2021-12-22 13:06:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:06:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:06:36,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:06:36,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:06:37,106 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:06:37,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:06:39,713 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:06:39,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:06:39,729 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:06:39,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:06:39 BoogieIcfgContainer [2021-12-22 13:06:39,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:06:39,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:06:39,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:06:39,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:06:39,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:06:34" (1/3) ... [2021-12-22 13:06:39,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25142446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:06:39, skipping insertion in model container [2021-12-22 13:06:39,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:06:36" (2/3) ... [2021-12-22 13:06:39,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25142446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:06:39, skipping insertion in model container [2021-12-22 13:06:39,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:06:39" (3/3) ... [2021-12-22 13:06:39,737 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label07.c [2021-12-22 13:06:39,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:06:39,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 13:06:39,773 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:06:39,777 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:06:39,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 13:06:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 13:06:39,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:39,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:39,800 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1910581880, now seen corresponding path program 1 times [2021-12-22 13:06:39,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:39,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838072915] [2021-12-22 13:06:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:39,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:39,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838072915] [2021-12-22 13:06:39,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838072915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:39,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:39,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:06:39,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972000219] [2021-12-22 13:06:39,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:39,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:39,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:39,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:39,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:39,945 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:42,844 INFO L93 Difference]: Finished difference Result 2605 states and 4986 transitions. [2021-12-22 13:06:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:42,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-22 13:06:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:42,868 INFO L225 Difference]: With dead ends: 2605 [2021-12-22 13:06:42,886 INFO L226 Difference]: Without dead ends: 1631 [2021-12-22 13:06:42,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:42,901 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1031 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:42,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 744 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-22 13:06:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-12-22 13:06:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-12-22 13:06:42,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6175567833026396) internal successors, (2635), 1630 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2635 transitions. [2021-12-22 13:06:42,977 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2635 transitions. Word has length 7 [2021-12-22 13:06:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:42,977 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2635 transitions. [2021-12-22 13:06:42,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:42,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2635 transitions. [2021-12-22 13:06:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-22 13:06:42,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:42,979 INFO L514 BasicCegarLoop]: 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] [2021-12-22 13:06:42,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:06:42,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:42,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:42,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2021-12-22 13:06:42,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:42,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461389864] [2021-12-22 13:06:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:42,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:43,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:43,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461389864] [2021-12-22 13:06:43,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461389864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:43,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:43,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:06:43,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798335304] [2021-12-22 13:06:43,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:43,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:06:43,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:43,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:06:43,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:06:43,041 INFO L87 Difference]: Start difference. First operand 1631 states and 2635 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:43,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:43,108 INFO L93 Difference]: Finished difference Result 1705 states and 2750 transitions. [2021-12-22 13:06:43,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:06:43,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-22 13:06:43,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:43,113 INFO L225 Difference]: With dead ends: 1705 [2021-12-22 13:06:43,114 INFO L226 Difference]: Without dead ends: 1631 [2021-12-22 13:06:43,115 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:43,116 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:43,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-12-22 13:06:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-12-22 13:06:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.5868631062001228) internal successors, (2585), 1630 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2585 transitions. [2021-12-22 13:06:43,193 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2585 transitions. Word has length 42 [2021-12-22 13:06:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:43,193 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2585 transitions. [2021-12-22 13:06:43,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2585 transitions. [2021-12-22 13:06:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-22 13:06:43,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:43,196 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-22 13:06:43,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:06:43,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:43,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:43,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1588987219, now seen corresponding path program 1 times [2021-12-22 13:06:43,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:43,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159993384] [2021-12-22 13:06:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:43,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:43,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:43,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159993384] [2021-12-22 13:06:43,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159993384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:43,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:43,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 13:06:43,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288056283] [2021-12-22 13:06:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:43,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:43,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:43,274 INFO L87 Difference]: Start difference. First operand 1631 states and 2585 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:45,842 INFO L93 Difference]: Finished difference Result 4637 states and 7416 transitions. [2021-12-22 13:06:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-22 13:06:45,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:45,853 INFO L225 Difference]: With dead ends: 4637 [2021-12-22 13:06:45,853 INFO L226 Difference]: Without dead ends: 3133 [2021-12-22 13:06:45,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:45,856 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 940 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:45,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 616 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 13:06:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2021-12-22 13:06:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3133. [2021-12-22 13:06:45,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3133 states, 3131 states have (on average 1.412967103161929) internal successors, (4424), 3132 states have internal predecessors, (4424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3133 states to 3133 states and 4424 transitions. [2021-12-22 13:06:45,957 INFO L78 Accepts]: Start accepts. Automaton has 3133 states and 4424 transitions. Word has length 82 [2021-12-22 13:06:45,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:45,958 INFO L470 AbstractCegarLoop]: Abstraction has 3133 states and 4424 transitions. [2021-12-22 13:06:45,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:45,958 INFO L276 IsEmpty]: Start isEmpty. Operand 3133 states and 4424 transitions. [2021-12-22 13:06:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-22 13:06:45,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:45,959 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:45,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:06:45,960 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:45,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash -232369458, now seen corresponding path program 1 times [2021-12-22 13:06:45,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:45,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994466536] [2021-12-22 13:06:45,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:45,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:46,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:46,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994466536] [2021-12-22 13:06:46,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994466536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:46,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:46,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:46,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859546937] [2021-12-22 13:06:46,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:46,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:06:46,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:46,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:06:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:06:46,045 INFO L87 Difference]: Start difference. First operand 3133 states and 4424 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:49,930 INFO L93 Difference]: Finished difference Result 9894 states and 13768 transitions. [2021-12-22 13:06:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:06:49,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-12-22 13:06:49,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:49,950 INFO L225 Difference]: With dead ends: 9894 [2021-12-22 13:06:49,951 INFO L226 Difference]: Without dead ends: 6888 [2021-12-22 13:06:49,954 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:49,955 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 2515 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2515 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 5459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:49,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2515 Valid, 331 Invalid, 5459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-22 13:06:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2021-12-22 13:06:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6888. [2021-12-22 13:06:50,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6886 states have (on average 1.3510020331106594) internal successors, (9303), 6887 states have internal predecessors, (9303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 9303 transitions. [2021-12-22 13:06:50,053 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 9303 transitions. Word has length 84 [2021-12-22 13:06:50,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:50,054 INFO L470 AbstractCegarLoop]: Abstraction has 6888 states and 9303 transitions. [2021-12-22 13:06:50,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 9303 transitions. [2021-12-22 13:06:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:06:50,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:50,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:50,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:06:50,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:50,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:50,059 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2021-12-22 13:06:50,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:50,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273563266] [2021-12-22 13:06:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:50,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:50,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:50,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273563266] [2021-12-22 13:06:50,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273563266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:50,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:50,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:50,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751517795] [2021-12-22 13:06:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:50,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:50,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:50,189 INFO L87 Difference]: Start difference. First operand 6888 states and 9303 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:50,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:50,235 INFO L93 Difference]: Finished difference Result 7022 states and 9515 transitions. [2021-12-22 13:06:50,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:50,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-12-22 13:06:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:50,255 INFO L225 Difference]: With dead ends: 7022 [2021-12-22 13:06:50,255 INFO L226 Difference]: Without dead ends: 6952 [2021-12-22 13:06:50,258 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:50,259 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 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 [2021-12-22 13:06:50,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2021-12-22 13:06:50,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 6950. [2021-12-22 13:06:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6948 states have (on average 1.3531951640759932) internal successors, (9402), 6949 states have internal predecessors, (9402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 9402 transitions. [2021-12-22 13:06:50,355 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 9402 transitions. Word has length 91 [2021-12-22 13:06:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:50,358 INFO L470 AbstractCegarLoop]: Abstraction has 6950 states and 9402 transitions. [2021-12-22 13:06:50,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 9402 transitions. [2021-12-22 13:06:50,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:06:50,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:50,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:50,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 13:06:50,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:50,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2021-12-22 13:06:50,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:50,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572754523] [2021-12-22 13:06:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:50,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:50,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:50,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572754523] [2021-12-22 13:06:50,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572754523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:50,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:50,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:50,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367173682] [2021-12-22 13:06:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:50,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:50,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:50,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:50,472 INFO L87 Difference]: Start difference. First operand 6950 states and 9402 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:50,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:50,508 INFO L93 Difference]: Finished difference Result 7202 states and 9802 transitions. [2021-12-22 13:06:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:50,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-12-22 13:06:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:50,535 INFO L225 Difference]: With dead ends: 7202 [2021-12-22 13:06:50,535 INFO L226 Difference]: Without dead ends: 7070 [2021-12-22 13:06:50,538 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:50,540 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 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 [2021-12-22 13:06:50,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2021-12-22 13:06:50,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 7068. [2021-12-22 13:06:50,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7066 states have (on average 1.3570619869799037) internal successors, (9589), 7067 states have internal predecessors, (9589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 9589 transitions. [2021-12-22 13:06:50,648 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 9589 transitions. Word has length 91 [2021-12-22 13:06:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:50,649 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 9589 transitions. [2021-12-22 13:06:50,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 9589 transitions. [2021-12-22 13:06:50,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:06:50,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:50,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:50,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:06:50,654 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:50,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2021-12-22 13:06:50,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:50,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526679835] [2021-12-22 13:06:50,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:50,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:50,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:50,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526679835] [2021-12-22 13:06:50,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526679835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:50,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:50,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:50,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271665431] [2021-12-22 13:06:50,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:50,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:50,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:50,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:50,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:50,705 INFO L87 Difference]: Start difference. First operand 7068 states and 9589 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:50,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:50,745 INFO L93 Difference]: Finished difference Result 7544 states and 10343 transitions. [2021-12-22 13:06:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:50,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-12-22 13:06:50,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:50,754 INFO L225 Difference]: With dead ends: 7544 [2021-12-22 13:06:50,754 INFO L226 Difference]: Without dead ends: 7294 [2021-12-22 13:06:50,756 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:50,757 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 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 [2021-12-22 13:06:50,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:50,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2021-12-22 13:06:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 7292. [2021-12-22 13:06:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7292 states, 7290 states have (on average 1.3636488340192043) internal successors, (9941), 7291 states have internal predecessors, (9941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7292 states to 7292 states and 9941 transitions. [2021-12-22 13:06:50,842 INFO L78 Accepts]: Start accepts. Automaton has 7292 states and 9941 transitions. Word has length 91 [2021-12-22 13:06:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:50,842 INFO L470 AbstractCegarLoop]: Abstraction has 7292 states and 9941 transitions. [2021-12-22 13:06:50,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:50,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7292 states and 9941 transitions. [2021-12-22 13:06:50,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:06:50,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:50,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:50,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:06:50,844 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:50,844 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2021-12-22 13:06:50,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:50,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054385434] [2021-12-22 13:06:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:50,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:50,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:50,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054385434] [2021-12-22 13:06:50,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054385434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:50,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:50,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:50,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264895237] [2021-12-22 13:06:50,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:50,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:50,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:50,875 INFO L87 Difference]: Start difference. First operand 7292 states and 9941 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:50,946 INFO L93 Difference]: Finished difference Result 8192 states and 11359 transitions. [2021-12-22 13:06:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:50,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-12-22 13:06:50,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:50,956 INFO L225 Difference]: With dead ends: 8192 [2021-12-22 13:06:50,956 INFO L226 Difference]: Without dead ends: 7718 [2021-12-22 13:06:50,957 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:50,958 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 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 [2021-12-22 13:06:50,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2021-12-22 13:06:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7716. [2021-12-22 13:06:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7714 states have (on average 1.3742546020222972) internal successors, (10601), 7715 states have internal predecessors, (10601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 10601 transitions. [2021-12-22 13:06:51,043 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 10601 transitions. Word has length 91 [2021-12-22 13:06:51,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:51,043 INFO L470 AbstractCegarLoop]: Abstraction has 7716 states and 10601 transitions. [2021-12-22 13:06:51,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:51,044 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 10601 transitions. [2021-12-22 13:06:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:06:51,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:51,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:51,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:06:51,045 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:51,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:51,045 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2021-12-22 13:06:51,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:51,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055938080] [2021-12-22 13:06:51,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:51,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:51,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:51,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055938080] [2021-12-22 13:06:51,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055938080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:51,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:51,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:51,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316542588] [2021-12-22 13:06:51,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:51,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:51,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:51,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:51,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:51,075 INFO L87 Difference]: Start difference. First operand 7716 states and 10601 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:51,136 INFO L93 Difference]: Finished difference Result 9416 states and 13259 transitions. [2021-12-22 13:06:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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 91 [2021-12-22 13:06:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:51,147 INFO L225 Difference]: With dead ends: 9416 [2021-12-22 13:06:51,147 INFO L226 Difference]: Without dead ends: 8518 [2021-12-22 13:06:51,150 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:51,150 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 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 [2021-12-22 13:06:51,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2021-12-22 13:06:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8516. [2021-12-22 13:06:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8516 states, 8514 states have (on average 1.3898285177354945) internal successors, (11833), 8515 states have internal predecessors, (11833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 11833 transitions. [2021-12-22 13:06:51,270 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 11833 transitions. Word has length 91 [2021-12-22 13:06:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:51,270 INFO L470 AbstractCegarLoop]: Abstraction has 8516 states and 11833 transitions. [2021-12-22 13:06:51,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 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) [2021-12-22 13:06:51,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 11833 transitions. [2021-12-22 13:06:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 13:06:51,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:51,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:51,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:06:51,272 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2021-12-22 13:06:51,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:51,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892570530] [2021-12-22 13:06:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:51,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:51,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:51,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892570530] [2021-12-22 13:06:51,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892570530] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:51,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:51,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:06:51,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395854974] [2021-12-22 13:06:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:51,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:06:51,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:06:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:06:51,336 INFO L87 Difference]: Start difference. First operand 8516 states and 11833 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2021-12-22 13:06:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:52,237 INFO L93 Difference]: Finished difference Result 32288 states and 48807 transitions. [2021-12-22 13:06:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:06:52,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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 91 [2021-12-22 13:06:52,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:52,288 INFO L225 Difference]: With dead ends: 32288 [2021-12-22 13:06:52,288 INFO L226 Difference]: Without dead ends: 30590 [2021-12-22 13:06:52,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:06:52,299 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:52,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:06:52,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30590 states. [2021-12-22 13:06:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30590 to 10212. [2021-12-22 13:06:52,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10212 states, 10210 states have (on average 1.4112634671890303) internal successors, (14409), 10211 states have internal predecessors, (14409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:52,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 14409 transitions. [2021-12-22 13:06:52,764 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 14409 transitions. Word has length 91 [2021-12-22 13:06:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:52,764 INFO L470 AbstractCegarLoop]: Abstraction has 10212 states and 14409 transitions. [2021-12-22 13:06:52,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2021-12-22 13:06:52,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 14409 transitions. [2021-12-22 13:06:52,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 13:06:52,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:52,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:52,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 13:06:52,766 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:52,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:52,766 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2021-12-22 13:06:52,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:52,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779525072] [2021-12-22 13:06:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:52,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:52,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:52,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779525072] [2021-12-22 13:06:52,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779525072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:52,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:52,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:52,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83775468] [2021-12-22 13:06:52,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:52,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:52,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:52,830 INFO L87 Difference]: Start difference. First operand 10212 states and 14409 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-12-22 13:06:53,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:53,210 INFO L93 Difference]: Finished difference Result 16648 states and 24235 transitions. [2021-12-22 13:06:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:53,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2021-12-22 13:06:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:53,230 INFO L225 Difference]: With dead ends: 16648 [2021-12-22 13:06:53,230 INFO L226 Difference]: Without dead ends: 13254 [2021-12-22 13:06:53,239 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:53,240 INFO L933 BasicCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:53,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2021-12-22 13:06:53,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 13188. [2021-12-22 13:06:53,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.4252237221295314) internal successors, (18793), 13187 states have internal predecessors, (18793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 18793 transitions. [2021-12-22 13:06:53,733 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 18793 transitions. Word has length 93 [2021-12-22 13:06:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:53,734 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 18793 transitions. [2021-12-22 13:06:53,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-12-22 13:06:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 18793 transitions. [2021-12-22 13:06:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 13:06:53,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:53,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:53,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 13:06:53,736 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2021-12-22 13:06:53,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:53,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981428462] [2021-12-22 13:06:53,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:53,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:53,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:53,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981428462] [2021-12-22 13:06:53,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981428462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:53,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:53,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:06:53,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329885698] [2021-12-22 13:06:53,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:53,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:06:53,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:53,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:06:53,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:06:53,909 INFO L87 Difference]: Start difference. First operand 13188 states and 18793 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2021-12-22 13:06:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:54,563 INFO L93 Difference]: Finished difference Result 19560 states and 28395 transitions. [2021-12-22 13:06:54,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:06:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 93 [2021-12-22 13:06:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:54,589 INFO L225 Difference]: With dead ends: 19560 [2021-12-22 13:06:54,589 INFO L226 Difference]: Without dead ends: 13190 [2021-12-22 13:06:54,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:06:54,599 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 4941 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 2292 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:54,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 2292 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:06:54,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13190 states. [2021-12-22 13:06:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13190 to 13188. [2021-12-22 13:06:55,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.4203700894888518) internal successors, (18729), 13187 states have internal predecessors, (18729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 18729 transitions. [2021-12-22 13:06:55,033 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 18729 transitions. Word has length 93 [2021-12-22 13:06:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:55,034 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 18729 transitions. [2021-12-22 13:06:55,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2021-12-22 13:06:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 18729 transitions. [2021-12-22 13:06:55,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-22 13:06:55,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:55,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:55,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 13:06:55,036 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:55,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2021-12-22 13:06:55,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:55,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806560602] [2021-12-22 13:06:55,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:55,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:55,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:55,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806560602] [2021-12-22 13:06:55,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806560602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:55,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:55,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:55,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916371245] [2021-12-22 13:06:55,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:55,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:55,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:55,063 INFO L87 Difference]: Start difference. First operand 13188 states and 18729 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-12-22 13:06:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:55,774 INFO L93 Difference]: Finished difference Result 25160 states and 36523 transitions. [2021-12-22 13:06:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:06:55,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2021-12-22 13:06:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:55,797 INFO L225 Difference]: With dead ends: 25160 [2021-12-22 13:06:55,797 INFO L226 Difference]: Without dead ends: 18790 [2021-12-22 13:06:55,807 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:06:55,808 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 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 [2021-12-22 13:06:55,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18790 states. [2021-12-22 13:06:56,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18790 to 18788. [2021-12-22 13:06:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18788 states, 18786 states have (on average 1.4296284467156393) internal successors, (26857), 18787 states have internal predecessors, (26857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:56,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18788 states to 18788 states and 26857 transitions. [2021-12-22 13:06:56,809 INFO L78 Accepts]: Start accepts. Automaton has 18788 states and 26857 transitions. Word has length 93 [2021-12-22 13:06:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:56,809 INFO L470 AbstractCegarLoop]: Abstraction has 18788 states and 26857 transitions. [2021-12-22 13:06:56,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2021-12-22 13:06:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 18788 states and 26857 transitions. [2021-12-22 13:06:56,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-22 13:06:56,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:56,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:56,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 13:06:56,811 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2021-12-22 13:06:56,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:56,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651158925] [2021-12-22 13:06:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:56,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:56,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:56,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651158925] [2021-12-22 13:06:56,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651158925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:56,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:56,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:06:56,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757435353] [2021-12-22 13:06:56,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:56,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:06:56,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:56,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:06:56,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:06:56,873 INFO L87 Difference]: Start difference. First operand 18788 states and 26857 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2021-12-22 13:06:58,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:06:58,285 INFO L93 Difference]: Finished difference Result 27658 states and 39769 transitions. [2021-12-22 13:06:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 13:06:58,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 94 [2021-12-22 13:06:58,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:06:58,322 INFO L225 Difference]: With dead ends: 27658 [2021-12-22 13:06:58,322 INFO L226 Difference]: Without dead ends: 27656 [2021-12-22 13:06:58,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:06:58,332 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:06:58,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:06:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27656 states. [2021-12-22 13:06:59,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27656 to 19172. [2021-12-22 13:06:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19172 states, 19170 states have (on average 1.4176838810641628) internal successors, (27177), 19171 states have internal predecessors, (27177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:06:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19172 states to 19172 states and 27177 transitions. [2021-12-22 13:06:59,593 INFO L78 Accepts]: Start accepts. Automaton has 19172 states and 27177 transitions. Word has length 94 [2021-12-22 13:06:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:06:59,593 INFO L470 AbstractCegarLoop]: Abstraction has 19172 states and 27177 transitions. [2021-12-22 13:06:59,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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) [2021-12-22 13:06:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 19172 states and 27177 transitions. [2021-12-22 13:06:59,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 13:06:59,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:06:59,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:06:59,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 13:06:59,594 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:06:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:06:59,595 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2021-12-22 13:06:59,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:06:59,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260053268] [2021-12-22 13:06:59,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:06:59,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:06:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:06:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 13:06:59,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:06:59,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260053268] [2021-12-22 13:06:59,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260053268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:06:59,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:06:59,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:06:59,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029245391] [2021-12-22 13:06:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:06:59,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:06:59,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:06:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:06:59,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:06:59,619 INFO L87 Difference]: Start difference. First operand 19172 states and 27177 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:01,066 INFO L93 Difference]: Finished difference Result 31723 states and 45615 transitions. [2021-12-22 13:07:01,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:07:01,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 [2021-12-22 13:07:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:01,103 INFO L225 Difference]: With dead ends: 31723 [2021-12-22 13:07:01,104 INFO L226 Difference]: Without dead ends: 24936 [2021-12-22 13:07:01,117 INFO L932 BasicCegarLoop]: 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 [2021-12-22 13:07:01,118 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 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 [2021-12-22 13:07:01,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:07:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24936 states. [2021-12-22 13:07:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24936 to 24934. [2021-12-22 13:07:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24934 states, 24932 states have (on average 1.4212658430932135) internal successors, (35435), 24933 states have internal predecessors, (35435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24934 states to 24934 states and 35435 transitions. [2021-12-22 13:07:02,673 INFO L78 Accepts]: Start accepts. Automaton has 24934 states and 35435 transitions. Word has length 95 [2021-12-22 13:07:02,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:02,673 INFO L470 AbstractCegarLoop]: Abstraction has 24934 states and 35435 transitions. [2021-12-22 13:07:02,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:02,674 INFO L276 IsEmpty]: Start isEmpty. Operand 24934 states and 35435 transitions. [2021-12-22 13:07:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:07:02,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:02,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:02,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 13:07:02,708 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2021-12-22 13:07:02,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:02,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725424479] [2021-12-22 13:07:02,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:02,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 13:07:02,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:02,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725424479] [2021-12-22 13:07:02,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725424479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:02,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:02,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:07:02,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782341320] [2021-12-22 13:07:02,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:02,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:07:02,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:07:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:07:02,814 INFO L87 Difference]: Start difference. First operand 24934 states and 35435 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:12,514 INFO L93 Difference]: Finished difference Result 155254 states and 224051 transitions. [2021-12-22 13:07:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:07:12,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 130 [2021-12-22 13:07:12,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:12,745 INFO L225 Difference]: With dead ends: 155254 [2021-12-22 13:07:12,746 INFO L226 Difference]: Without dead ends: 137140 [2021-12-22 13:07:12,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:07:12,796 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 10875 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10875 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:12,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10875 Valid, 4157 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:07:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137140 states. [2021-12-22 13:07:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137140 to 43046. [2021-12-22 13:07:16,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43046 states, 43044 states have (on average 1.4283756156491032) internal successors, (61483), 43045 states have internal predecessors, (61483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43046 states to 43046 states and 61483 transitions. [2021-12-22 13:07:16,952 INFO L78 Accepts]: Start accepts. Automaton has 43046 states and 61483 transitions. Word has length 130 [2021-12-22 13:07:16,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:16,953 INFO L470 AbstractCegarLoop]: Abstraction has 43046 states and 61483 transitions. [2021-12-22 13:07:16,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 43046 states and 61483 transitions. [2021-12-22 13:07:16,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:07:16,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:16,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:16,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 13:07:16,994 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:16,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:16,995 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2021-12-22 13:07:16,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:16,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981381215] [2021-12-22 13:07:16,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:16,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 13:07:17,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:17,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981381215] [2021-12-22 13:07:17,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981381215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:17,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:17,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:07:17,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003471556] [2021-12-22 13:07:17,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:17,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:07:17,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:07:17,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:07:17,133 INFO L87 Difference]: Start difference. First operand 43046 states and 61483 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:29,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:07:29,542 INFO L93 Difference]: Finished difference Result 173366 states and 250099 transitions. [2021-12-22 13:07:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 13:07:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 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 130 [2021-12-22 13:07:29,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:07:29,782 INFO L225 Difference]: With dead ends: 173366 [2021-12-22 13:07:29,782 INFO L226 Difference]: Without dead ends: 155252 [2021-12-22 13:07:29,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-22 13:07:29,831 INFO L933 BasicCegarLoop]: 1710 mSDtfsCounter, 10612 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10612 SdHoareTripleChecker+Valid, 4214 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 13:07:29,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10612 Valid, 4214 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 13:07:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155252 states. [2021-12-22 13:07:36,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155252 to 70246. [2021-12-22 13:07:36,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70246 states, 70244 states have (on average 1.429232389955014) internal successors, (100395), 70245 states have internal predecessors, (100395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70246 states to 70246 states and 100395 transitions. [2021-12-22 13:07:36,584 INFO L78 Accepts]: Start accepts. Automaton has 70246 states and 100395 transitions. Word has length 130 [2021-12-22 13:07:36,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:07:36,585 INFO L470 AbstractCegarLoop]: Abstraction has 70246 states and 100395 transitions. [2021-12-22 13:07:36,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 13:07:36,585 INFO L276 IsEmpty]: Start isEmpty. Operand 70246 states and 100395 transitions. [2021-12-22 13:07:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-22 13:07:36,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:07:36,602 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:07:36,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 13:07:36,603 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:07:36,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:07:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash 565410506, now seen corresponding path program 1 times [2021-12-22 13:07:36,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:07:36,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853248233] [2021-12-22 13:07:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:07:36,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:07:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:07:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-22 13:07:36,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:07:36,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853248233] [2021-12-22 13:07:36,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853248233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:07:36,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:07:36,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 13:07:36,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308260293] [2021-12-22 13:07:36,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:07:36,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 13:07:36,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:07:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 13:07:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-22 13:07:36,719 INFO L87 Difference]: Start difference. First operand 70246 states and 100395 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)