./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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.3.ufo.BOUNDED-6.pals+Problem12_label02.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 d7b7824f74ab8cbbea36fdaee1d1dc5c7e52c10bcc21a0858c24d31348bf95ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:13:49,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:13:49,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:13:49,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:13:49,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:13:49,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:13:49,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:13:49,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:13:49,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:13:49,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:13:49,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:13:49,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:13:49,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:13:49,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:13:49,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:13:49,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:13:49,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:13:49,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:13:49,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:13:49,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:13:49,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:13:49,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:13:49,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:13:49,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:13:49,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:13:49,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:13:49,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:13:49,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:13:49,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:13:49,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:13:49,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:13:49,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:13:49,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:13:49,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:13:49,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:13:49,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:13:49,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:13:49,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:13:49,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:13:49,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:13:49,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:13:49,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:13:49,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:13:49,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:13:49,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:13:49,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:13:49,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:13:49,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:13:49,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:13:49,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:13:49,615 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:13:49,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:13:49,616 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:13:49,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:13:49,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:13:49,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:13:49,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:13:49,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:13:49,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:13:49,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:13:49,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:13:49,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:13:49,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:13:49,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:13:49,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:13:49,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:13:49,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:13:49,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:13:49,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:13:49,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:13:49,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:13:49,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:13:49,620 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:13:49,620 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:13:49,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:13:49,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b7824f74ab8cbbea36fdaee1d1dc5c7e52c10bcc21a0858c24d31348bf95ad [2021-12-28 02:13:49,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:13:49,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:13:49,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:13:49,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:13:49,954 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:13:49,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2021-12-28 02:13:50,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa6fa3d2/6956fd0d089c4f0caa64cc794c2d7c55/FLAG00f9cc337 [2021-12-28 02:13:50,722 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:13:50,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2021-12-28 02:13:50,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa6fa3d2/6956fd0d089c4f0caa64cc794c2d7c55/FLAG00f9cc337 [2021-12-28 02:13:50,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fa6fa3d2/6956fd0d089c4f0caa64cc794c2d7c55 [2021-12-28 02:13:50,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:13:50,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:13:50,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:13:50,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:13:51,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:13:51,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:13:50" (1/1) ... [2021-12-28 02:13:51,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c24bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:51, skipping insertion in model container [2021-12-28 02:13:51,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:13:50" (1/1) ... [2021-12-28 02:13:51,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:13:51,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:13:51,359 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.3.ufo.BOUNDED-6.pals+Problem12_label02.c[6354,6367] [2021-12-28 02:13:51,407 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.3.ufo.BOUNDED-6.pals+Problem12_label02.c[13644,13657] [2021-12-28 02:13:52,017 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:13:52,025 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:13:52,059 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.3.ufo.BOUNDED-6.pals+Problem12_label02.c[6354,6367] [2021-12-28 02:13:52,075 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.3.ufo.BOUNDED-6.pals+Problem12_label02.c[13644,13657] [2021-12-28 02:13:52,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:13:52,448 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:13:52,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52 WrapperNode [2021-12-28 02:13:52,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:13:52,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:13:52,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:13:52,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:13:52,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:52,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:52,880 INFO L137 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4976 [2021-12-28 02:13:52,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:13:52,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:13:52,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:13:52,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:13:52,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:52,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:52,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:52,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:53,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:53,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:53,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:53,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:13:53,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:13:53,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:13:53,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:13:53,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (1/1) ... [2021-12-28 02:13:53,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:13:53,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:13:53,252 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) [2021-12-28 02:13:53,265 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 [2021-12-28 02:13:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:13:53,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:13:53,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:13:53,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:13:53,417 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:13:53,418 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:13:56,886 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:13:56,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:13:56,906 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:13:56,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:13:56 BoogieIcfgContainer [2021-12-28 02:13:56,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:13:56,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:13:56,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:13:56,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:13:56,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:13:50" (1/3) ... [2021-12-28 02:13:56,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402f605e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:13:56, skipping insertion in model container [2021-12-28 02:13:56,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:13:52" (2/3) ... [2021-12-28 02:13:56,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402f605e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:13:56, skipping insertion in model container [2021-12-28 02:13:56,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:13:56" (3/3) ... [2021-12-28 02:13:56,916 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label02.c [2021-12-28 02:13:56,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:13:56,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:13:56,976 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:13:56,982 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 [2021-12-28 02:13:56,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:13:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 02:13:57,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:57,018 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] [2021-12-28 02:13:57,019 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:57,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:57,023 INFO L85 PathProgramCache]: Analyzing trace with hash 975463267, now seen corresponding path program 1 times [2021-12-28 02:13:57,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037464138] [2021-12-28 02:13:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:57,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:57,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:57,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037464138] [2021-12-28 02:13:57,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037464138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:57,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:57,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:13:57,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321617734] [2021-12-28 02:13:57,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:57,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:13:57,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:57,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:13:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:13:57,219 INFO L87 Difference]: Start difference. First operand has 878 states, 875 states have (on average 1.904) internal successors, (1666), 877 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:57,299 INFO L93 Difference]: Finished difference Result 1734 states and 3292 transitions. [2021-12-28 02:13:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:13:57,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-28 02:13:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:57,315 INFO L225 Difference]: With dead ends: 1734 [2021-12-28 02:13:57,315 INFO L226 Difference]: Without dead ends: 812 [2021-12-28 02:13:57,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:13:57,323 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:13:57,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-12-28 02:13:57,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 812. [2021-12-28 02:13:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8925925925925926) internal successors, (1533), 811 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1533 transitions. [2021-12-28 02:13:57,411 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1533 transitions. Word has length 26 [2021-12-28 02:13:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:57,412 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1533 transitions. [2021-12-28 02:13:57,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1533 transitions. [2021-12-28 02:13:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 02:13:57,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:57,414 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] [2021-12-28 02:13:57,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:13:57,415 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 157814817, now seen corresponding path program 1 times [2021-12-28 02:13:57,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:57,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616924060] [2021-12-28 02:13:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:57,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:57,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:57,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616924060] [2021-12-28 02:13:57,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616924060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:57,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:57,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:13:57,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204387334] [2021-12-28 02:13:57,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:57,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:13:57,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:13:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:13:57,556 INFO L87 Difference]: Start difference. First operand 812 states and 1533 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:57,638 INFO L93 Difference]: Finished difference Result 888 states and 1649 transitions. [2021-12-28 02:13:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 02:13:57,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-12-28 02:13:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:57,642 INFO L225 Difference]: With dead ends: 888 [2021-12-28 02:13:57,642 INFO L226 Difference]: Without dead ends: 848 [2021-12-28 02:13:57,646 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 [2021-12-28 02:13:57,648 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 58 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:13:57,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 6095 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-12-28 02:13:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 812. [2021-12-28 02:13:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 810 states have (on average 1.8728395061728396) internal successors, (1517), 811 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1517 transitions. [2021-12-28 02:13:57,665 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1517 transitions. Word has length 26 [2021-12-28 02:13:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:57,665 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1517 transitions. [2021-12-28 02:13:57,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1517 transitions. [2021-12-28 02:13:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-28 02:13:57,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:57,668 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] [2021-12-28 02:13:57,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:13:57,668 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1324654887, now seen corresponding path program 1 times [2021-12-28 02:13:57,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:57,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790346262] [2021-12-28 02:13:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:57,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:57,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:57,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790346262] [2021-12-28 02:13:57,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790346262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:57,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:57,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:13:57,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702842627] [2021-12-28 02:13:57,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:57,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:13:57,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:57,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:13:57,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:13:57,773 INFO L87 Difference]: Start difference. First operand 812 states and 1517 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:57,800 INFO L93 Difference]: Finished difference Result 878 states and 1619 transitions. [2021-12-28 02:13:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:13:57,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-12-28 02:13:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:57,809 INFO L225 Difference]: With dead ends: 878 [2021-12-28 02:13:57,809 INFO L226 Difference]: Without dead ends: 842 [2021-12-28 02:13:57,810 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 [2021-12-28 02:13:57,811 INFO L933 BasicCegarLoop]: 1559 mSDtfsCounter, 1485 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1613 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 [2021-12-28 02:13:57,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1613 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-12-28 02:13:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 840. [2021-12-28 02:13:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.8627684964200477) internal successors, (1561), 839 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1561 transitions. [2021-12-28 02:13:57,828 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1561 transitions. Word has length 41 [2021-12-28 02:13:57,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:57,828 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1561 transitions. [2021-12-28 02:13:57,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1561 transitions. [2021-12-28 02:13:57,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-28 02:13:57,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:57,832 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] [2021-12-28 02:13:57,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:13:57,832 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:57,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:57,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1376027727, now seen corresponding path program 1 times [2021-12-28 02:13:57,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:57,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622167155] [2021-12-28 02:13:57,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:57,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:57,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:57,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622167155] [2021-12-28 02:13:57,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622167155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:57,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:57,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:13:57,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707328078] [2021-12-28 02:13:57,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:57,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:13:57,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:57,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:13:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:13:57,949 INFO L87 Difference]: Start difference. First operand 840 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:58,058 INFO L93 Difference]: Finished difference Result 1224 states and 2161 transitions. [2021-12-28 02:13:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:13:58,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2021-12-28 02:13:58,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:58,063 INFO L225 Difference]: With dead ends: 1224 [2021-12-28 02:13:58,064 INFO L226 Difference]: Without dead ends: 1160 [2021-12-28 02:13:58,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:13:58,065 INFO L933 BasicCegarLoop]: 1511 mSDtfsCounter, 4709 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4709 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:13:58,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4709 Valid, 1779 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-12-28 02:13:58,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 902. [2021-12-28 02:13:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 900 states have (on average 1.84) internal successors, (1656), 901 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1656 transitions. [2021-12-28 02:13:58,087 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1656 transitions. Word has length 41 [2021-12-28 02:13:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:58,087 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 1656 transitions. [2021-12-28 02:13:58,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1656 transitions. [2021-12-28 02:13:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:13:58,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:58,088 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] [2021-12-28 02:13:58,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:13:58,089 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:58,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:58,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1902982177, now seen corresponding path program 1 times [2021-12-28 02:13:58,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:58,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397552610] [2021-12-28 02:13:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:58,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:58,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:58,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:58,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397552610] [2021-12-28 02:13:58,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397552610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:58,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:58,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:13:58,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71470762] [2021-12-28 02:13:58,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:58,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:13:58,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:13:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:13:58,140 INFO L87 Difference]: Start difference. First operand 902 states and 1656 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:58,172 INFO L93 Difference]: Finished difference Result 1089 states and 1943 transitions. [2021-12-28 02:13:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:13:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-12-28 02:13:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:58,177 INFO L225 Difference]: With dead ends: 1089 [2021-12-28 02:13:58,177 INFO L226 Difference]: Without dead ends: 963 [2021-12-28 02:13:58,177 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 [2021-12-28 02:13:58,178 INFO L933 BasicCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:13:58,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 1565 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:58,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-12-28 02:13:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2021-12-28 02:13:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8185610010427529) internal successors, (1744), 960 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1744 transitions. [2021-12-28 02:13:58,216 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1744 transitions. Word has length 43 [2021-12-28 02:13:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:58,216 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1744 transitions. [2021-12-28 02:13:58,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1744 transitions. [2021-12-28 02:13:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:13:58,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:58,218 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] [2021-12-28 02:13:58,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:13:58,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1836488665, now seen corresponding path program 1 times [2021-12-28 02:13:58,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:58,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690238660] [2021-12-28 02:13:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:58,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:58,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:58,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690238660] [2021-12-28 02:13:58,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690238660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:58,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:58,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:13:58,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626193668] [2021-12-28 02:13:58,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:58,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:13:58,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:58,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:13:58,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:13:58,372 INFO L87 Difference]: Start difference. First operand 961 states and 1744 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:58,448 INFO L93 Difference]: Finished difference Result 1146 states and 2026 transitions. [2021-12-28 02:13:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:13:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-12-28 02:13:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:58,454 INFO L225 Difference]: With dead ends: 1146 [2021-12-28 02:13:58,454 INFO L226 Difference]: Without dead ends: 963 [2021-12-28 02:13:58,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:13:58,457 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 1528 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:13:58,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1685 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-12-28 02:13:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2021-12-28 02:13:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 959 states have (on average 1.8154327424400416) internal successors, (1741), 960 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1741 transitions. [2021-12-28 02:13:58,516 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1741 transitions. Word has length 43 [2021-12-28 02:13:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:58,516 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1741 transitions. [2021-12-28 02:13:58,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1741 transitions. [2021-12-28 02:13:58,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:13:58,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:58,518 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] [2021-12-28 02:13:58,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:13:58,518 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:58,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash -47574589, now seen corresponding path program 1 times [2021-12-28 02:13:58,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:58,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932912602] [2021-12-28 02:13:58,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:58,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:58,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:58,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932912602] [2021-12-28 02:13:58,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932912602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:58,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:58,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:13:58,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609229839] [2021-12-28 02:13:58,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:58,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:13:58,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:13:58,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:13:58,554 INFO L87 Difference]: Start difference. First operand 961 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:58,592 INFO L93 Difference]: Finished difference Result 1291 states and 2237 transitions. [2021-12-28 02:13:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:13:58,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-12-28 02:13:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:58,597 INFO L225 Difference]: With dead ends: 1291 [2021-12-28 02:13:58,598 INFO L226 Difference]: Without dead ends: 1108 [2021-12-28 02:13:58,598 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 [2021-12-28 02:13:58,599 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 1477 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1603 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 [2021-12-28 02:13:58,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 1603 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-12-28 02:13:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1106. [2021-12-28 02:13:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1104 states have (on average 1.7681159420289856) internal successors, (1952), 1105 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1952 transitions. [2021-12-28 02:13:58,635 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1952 transitions. Word has length 43 [2021-12-28 02:13:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:58,635 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 1952 transitions. [2021-12-28 02:13:58,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1952 transitions. [2021-12-28 02:13:58,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 02:13:58,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:58,636 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] [2021-12-28 02:13:58,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:13:58,637 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:58,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1199933027, now seen corresponding path program 1 times [2021-12-28 02:13:58,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:58,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653769461] [2021-12-28 02:13:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:58,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:58,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:58,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653769461] [2021-12-28 02:13:58,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653769461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:58,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:58,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:13:58,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4539277] [2021-12-28 02:13:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:58,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:13:58,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:13:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:13:58,669 INFO L87 Difference]: Start difference. First operand 1106 states and 1952 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:58,722 INFO L93 Difference]: Finished difference Result 1690 states and 2810 transitions. [2021-12-28 02:13:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:13:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-12-28 02:13:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:58,728 INFO L225 Difference]: With dead ends: 1690 [2021-12-28 02:13:58,728 INFO L226 Difference]: Without dead ends: 1362 [2021-12-28 02:13:58,729 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 [2021-12-28 02:13:58,730 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1612 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 [2021-12-28 02:13:58,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 1612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:58,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-12-28 02:13:58,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1360. [2021-12-28 02:13:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.6995581737849779) internal successors, (2308), 1359 states have internal predecessors, (2308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2308 transitions. [2021-12-28 02:13:58,786 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2308 transitions. Word has length 43 [2021-12-28 02:13:58,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:58,787 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 2308 transitions. [2021-12-28 02:13:58,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2308 transitions. [2021-12-28 02:13:58,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-28 02:13:58,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:58,788 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] [2021-12-28 02:13:58,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:13:58,788 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1511296967, now seen corresponding path program 1 times [2021-12-28 02:13:58,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:58,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365440844] [2021-12-28 02:13:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:58,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:58,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365440844] [2021-12-28 02:13:58,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365440844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:58,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:58,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 02:13:58,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105181057] [2021-12-28 02:13:58,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:58,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 02:13:58,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:58,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 02:13:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:13:58,869 INFO L87 Difference]: Start difference. First operand 1360 states and 2308 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:59,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:13:59,076 INFO L93 Difference]: Finished difference Result 1883 states and 3036 transitions. [2021-12-28 02:13:59,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:13:59,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2021-12-28 02:13:59,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:13:59,084 INFO L225 Difference]: With dead ends: 1883 [2021-12-28 02:13:59,084 INFO L226 Difference]: Without dead ends: 1881 [2021-12-28 02:13:59,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-12-28 02:13:59,086 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 331 mSDsluCounter, 8972 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 10503 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:13:59,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 10503 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:13:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2021-12-28 02:13:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1408. [2021-12-28 02:13:59,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1406 states have (on average 1.6728307254623045) internal successors, (2352), 1407 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2352 transitions. [2021-12-28 02:13:59,163 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2352 transitions. Word has length 44 [2021-12-28 02:13:59,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:13:59,164 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 2352 transitions. [2021-12-28 02:13:59,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:13:59,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2352 transitions. [2021-12-28 02:13:59,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-28 02:13:59,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:13:59,165 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] [2021-12-28 02:13:59,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:13:59,166 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:13:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:13:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash -523945775, now seen corresponding path program 1 times [2021-12-28 02:13:59,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:13:59,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758790634] [2021-12-28 02:13:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:13:59,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:13:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:13:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:13:59,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:13:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758790634] [2021-12-28 02:13:59,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758790634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:13:59,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:13:59,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:13:59,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305272538] [2021-12-28 02:13:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:13:59,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 02:13:59,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:13:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 02:13:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 02:13:59,232 INFO L87 Difference]: Start difference. First operand 1408 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:04,969 INFO L93 Difference]: Finished difference Result 3663 states and 6661 transitions. [2021-12-28 02:14:04,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 02:14:04,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-12-28 02:14:04,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:04,983 INFO L225 Difference]: With dead ends: 3663 [2021-12-28 02:14:04,983 INFO L226 Difference]: Without dead ends: 2910 [2021-12-28 02:14:04,986 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 [2021-12-28 02:14:04,987 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 2335 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2335 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:04,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2335 Valid, 771 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-28 02:14:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2021-12-28 02:14:05,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2021-12-28 02:14:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2908 states have (on average 1.5357634112792298) internal successors, (4466), 2909 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4466 transitions. [2021-12-28 02:14:05,084 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4466 transitions. Word has length 63 [2021-12-28 02:14:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:05,086 INFO L470 AbstractCegarLoop]: Abstraction has 2910 states and 4466 transitions. [2021-12-28 02:14:05,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:05,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4466 transitions. [2021-12-28 02:14:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 02:14:05,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:05,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:05,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:14:05,088 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:05,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash -213997176, now seen corresponding path program 1 times [2021-12-28 02:14:05,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:05,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795110984] [2021-12-28 02:14:05,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:05,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-28 02:14:05,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795110984] [2021-12-28 02:14:05,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795110984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:05,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:05,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:05,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850419654] [2021-12-28 02:14:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:05,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:05,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:05,167 INFO L87 Difference]: Start difference. First operand 2910 states and 4466 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:05,402 INFO L93 Difference]: Finished difference Result 4938 states and 7314 transitions. [2021-12-28 02:14:05,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:14:05,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-28 02:14:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:05,419 INFO L225 Difference]: With dead ends: 4938 [2021-12-28 02:14:05,420 INFO L226 Difference]: Without dead ends: 4308 [2021-12-28 02:14:05,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:14:05,422 INFO L933 BasicCegarLoop]: 1563 mSDtfsCounter, 3075 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3075 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:05,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3075 Valid, 3177 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:05,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2021-12-28 02:14:05,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3538. [2021-12-28 02:14:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3538 states, 3536 states have (on average 1.5107466063348416) internal successors, (5342), 3537 states have internal predecessors, (5342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5342 transitions. [2021-12-28 02:14:05,568 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5342 transitions. Word has length 64 [2021-12-28 02:14:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:05,569 INFO L470 AbstractCegarLoop]: Abstraction has 3538 states and 5342 transitions. [2021-12-28 02:14:05,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5342 transitions. [2021-12-28 02:14:05,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 02:14:05,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:05,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:05,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:14:05,573 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:05,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1033510440, now seen corresponding path program 1 times [2021-12-28 02:14:05,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:05,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172545511] [2021-12-28 02:14:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:05,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 02:14:05,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:05,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172545511] [2021-12-28 02:14:05,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172545511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:05,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:05,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:05,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893873082] [2021-12-28 02:14:05,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:05,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:05,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:05,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:05,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:05,648 INFO L87 Difference]: Start difference. First operand 3538 states and 5342 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:05,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:05,904 INFO L93 Difference]: Finished difference Result 5566 states and 8190 transitions. [2021-12-28 02:14:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:14:05,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-28 02:14:05,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:05,923 INFO L225 Difference]: With dead ends: 5566 [2021-12-28 02:14:05,924 INFO L226 Difference]: Without dead ends: 4936 [2021-12-28 02:14:05,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:14:05,928 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 3067 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:05,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3067 Valid, 3203 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:05,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2021-12-28 02:14:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4482. [2021-12-28 02:14:06,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 1.4834821428571427) internal successors, (6646), 4481 states have internal predecessors, (6646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6646 transitions. [2021-12-28 02:14:06,234 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6646 transitions. Word has length 64 [2021-12-28 02:14:06,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:06,235 INFO L470 AbstractCegarLoop]: Abstraction has 4482 states and 6646 transitions. [2021-12-28 02:14:06,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:06,235 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6646 transitions. [2021-12-28 02:14:06,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-28 02:14:06,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:06,237 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 02:14:06,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 02:14:06,237 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:06,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:06,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1792023874, now seen corresponding path program 1 times [2021-12-28 02:14:06,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:06,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503858220] [2021-12-28 02:14:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:06,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:06,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:14:06,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:06,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503858220] [2021-12-28 02:14:06,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503858220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:06,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:06,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:14:06,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544080885] [2021-12-28 02:14:06,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:06,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:14:06,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:06,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:14:06,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:14:06,292 INFO L87 Difference]: Start difference. First operand 4482 states and 6646 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:06,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:06,589 INFO L93 Difference]: Finished difference Result 5834 states and 8570 transitions. [2021-12-28 02:14:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 02:14:06,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-28 02:14:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:06,620 INFO L225 Difference]: With dead ends: 5834 [2021-12-28 02:14:06,620 INFO L226 Difference]: Without dead ends: 5384 [2021-12-28 02:14:06,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:14:06,624 INFO L933 BasicCegarLoop]: 1562 mSDtfsCounter, 3066 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3066 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:06,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3066 Valid, 3181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5384 states. [2021-12-28 02:14:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5384 to 4930. [2021-12-28 02:14:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 4928 states have (on average 1.4768668831168832) internal successors, (7278), 4929 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7278 transitions. [2021-12-28 02:14:06,916 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7278 transitions. Word has length 64 [2021-12-28 02:14:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:06,916 INFO L470 AbstractCegarLoop]: Abstraction has 4930 states and 7278 transitions. [2021-12-28 02:14:06,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:06,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7278 transitions. [2021-12-28 02:14:06,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 02:14:06,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:06,923 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 02:14:06,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 02:14:06,923 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:06,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:06,924 INFO L85 PathProgramCache]: Analyzing trace with hash 322769619, now seen corresponding path program 1 times [2021-12-28 02:14:06,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222183524] [2021-12-28 02:14:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:06,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:06,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:06,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222183524] [2021-12-28 02:14:06,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222183524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:06,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:06,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:06,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247420814] [2021-12-28 02:14:06,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:06,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:06,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:06,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:06,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:06,985 INFO L87 Difference]: Start difference. First operand 4930 states and 7278 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:07,279 INFO L93 Difference]: Finished difference Result 7582 states and 10980 transitions. [2021-12-28 02:14:07,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:07,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-28 02:14:07,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:07,291 INFO L225 Difference]: With dead ends: 7582 [2021-12-28 02:14:07,291 INFO L226 Difference]: Without dead ends: 4932 [2021-12-28 02:14:07,296 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 [2021-12-28 02:14:07,297 INFO L933 BasicCegarLoop]: 1538 mSDtfsCounter, 33 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:07,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 3042 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2021-12-28 02:14:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4930. [2021-12-28 02:14:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 4928 states have (on average 1.4667207792207793) internal successors, (7228), 4929 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:07,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 7228 transitions. [2021-12-28 02:14:07,592 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 7228 transitions. Word has length 65 [2021-12-28 02:14:07,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:07,592 INFO L470 AbstractCegarLoop]: Abstraction has 4930 states and 7228 transitions. [2021-12-28 02:14:07,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 7228 transitions. [2021-12-28 02:14:07,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 02:14:07,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:07,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:07,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 02:14:07,595 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash 235650825, now seen corresponding path program 1 times [2021-12-28 02:14:07,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:07,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478755068] [2021-12-28 02:14:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:07,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:07,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:07,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478755068] [2021-12-28 02:14:07,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478755068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:14:07,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:14:07,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 02:14:07,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852020649] [2021-12-28 02:14:07,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:14:07,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 02:14:07,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:07,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 02:14:07,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 02:14:07,649 INFO L87 Difference]: Start difference. First operand 4930 states and 7228 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:07,802 INFO L93 Difference]: Finished difference Result 6258 states and 9055 transitions. [2021-12-28 02:14:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 02:14:07,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-28 02:14:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:07,809 INFO L225 Difference]: With dead ends: 6258 [2021-12-28 02:14:07,809 INFO L226 Difference]: Without dead ends: 3608 [2021-12-28 02:14:07,815 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 [2021-12-28 02:14:07,816 INFO L933 BasicCegarLoop]: 1531 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:07,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 3027 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:14:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2021-12-28 02:14:07,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 3606. [2021-12-28 02:14:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3606 states, 3604 states have (on average 1.4922308546059933) internal successors, (5378), 3605 states have internal predecessors, (5378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 5378 transitions. [2021-12-28 02:14:07,950 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 5378 transitions. Word has length 65 [2021-12-28 02:14:07,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:07,951 INFO L470 AbstractCegarLoop]: Abstraction has 3606 states and 5378 transitions. [2021-12-28 02:14:07,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 5378 transitions. [2021-12-28 02:14:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-28 02:14:07,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:07,952 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 02:14:07,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 02:14:07,952 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash -883624385, now seen corresponding path program 1 times [2021-12-28 02:14:07,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994169340] [2021-12-28 02:14:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:07,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:08,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:08,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994169340] [2021-12-28 02:14:08,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994169340] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:14:08,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992440818] [2021-12-28 02:14:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:08,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:14:08,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:14:08,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:14:08,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 02:14:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:08,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 02:14:08,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:14:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:14:08,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:14:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 02:14:08,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992440818] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 02:14:08,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 02:14:08,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 4] total 20 [2021-12-28 02:14:08,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665195618] [2021-12-28 02:14:08,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 02:14:08,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-28 02:14:08,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:08,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-28 02:14:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-12-28 02:14:08,983 INFO L87 Difference]: Start difference. First operand 3606 states and 5378 transitions. Second operand has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:13,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:13,767 INFO L93 Difference]: Finished difference Result 16572 states and 22693 transitions. [2021-12-28 02:14:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-12-28 02:14:13,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-28 02:14:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:13,801 INFO L225 Difference]: With dead ends: 16572 [2021-12-28 02:14:13,801 INFO L226 Difference]: Without dead ends: 15246 [2021-12-28 02:14:13,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 119 SyntacticMatches, 5 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6702 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2917, Invalid=13853, Unknown=0, NotChecked=0, Total=16770 [2021-12-28 02:14:13,814 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 15441 mSDsluCounter, 8585 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15441 SdHoareTripleChecker+Valid, 10177 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:13,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15441 Valid, 10177 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 02:14:13,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15246 states. [2021-12-28 02:14:14,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15246 to 8768. [2021-12-28 02:14:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8768 states, 8766 states have (on average 1.380333105179101) internal successors, (12100), 8767 states have internal predecessors, (12100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 12100 transitions. [2021-12-28 02:14:14,482 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 12100 transitions. Word has length 65 [2021-12-28 02:14:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:14,482 INFO L470 AbstractCegarLoop]: Abstraction has 8768 states and 12100 transitions. [2021-12-28 02:14:14,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.9) internal successors, (178), 20 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 12100 transitions. [2021-12-28 02:14:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 02:14:14,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:14,484 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:14,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 02:14:14,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-28 02:14:14,698 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:14,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1505794396, now seen corresponding path program 1 times [2021-12-28 02:14:14,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:14,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251381437] [2021-12-28 02:14:14,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:14,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:14,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:14,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251381437] [2021-12-28 02:14:14,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251381437] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:14:14,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903583145] [2021-12-28 02:14:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:14,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:14:14,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:14:14,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:14:14,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 02:14:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:14,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 02:14:14,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:14:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:15,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:14:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:16,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903583145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 02:14:16,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 02:14:16,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-28 02:14:16,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543928319] [2021-12-28 02:14:16,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 02:14:16,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-28 02:14:16,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-28 02:14:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2021-12-28 02:14:16,119 INFO L87 Difference]: Start difference. First operand 8768 states and 12100 transitions. Second operand has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:14:18,652 INFO L93 Difference]: Finished difference Result 29635 states and 39119 transitions. [2021-12-28 02:14:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 02:14:18,655 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-28 02:14:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:14:18,707 INFO L225 Difference]: With dead ends: 29635 [2021-12-28 02:14:18,708 INFO L226 Difference]: Without dead ends: 24816 [2021-12-28 02:14:18,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2021-12-28 02:14:18,724 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 7772 mSDsluCounter, 4989 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7772 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 02:14:18,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7772 Valid, 6524 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 02:14:18,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24816 states. [2021-12-28 02:14:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24816 to 16479. [2021-12-28 02:14:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16479 states, 16477 states have (on average 1.3413849608545245) internal successors, (22102), 16478 states have internal predecessors, (22102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16479 states to 16479 states and 22102 transitions. [2021-12-28 02:14:20,025 INFO L78 Accepts]: Start accepts. Automaton has 16479 states and 22102 transitions. Word has length 66 [2021-12-28 02:14:20,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:14:20,025 INFO L470 AbstractCegarLoop]: Abstraction has 16479 states and 22102 transitions. [2021-12-28 02:14:20,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.904761904761905) internal successors, (145), 20 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 02:14:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16479 states and 22102 transitions. [2021-12-28 02:14:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 02:14:20,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:14:20,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:14:20,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 02:14:20,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-28 02:14:20,244 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:14:20,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:14:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash 616171932, now seen corresponding path program 1 times [2021-12-28 02:14:20,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:14:20,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033961419] [2021-12-28 02:14:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:20,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:14:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:20,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:14:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033961419] [2021-12-28 02:14:20,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033961419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 02:14:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715657131] [2021-12-28 02:14:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:14:20,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 02:14:20,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:14:20,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 02:14:20,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 02:14:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:14:20,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-28 02:14:20,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:14:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:21,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 02:14:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:14:22,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715657131] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 02:14:22,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 02:14:22,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2021-12-28 02:14:22,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113179261] [2021-12-28 02:14:22,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 02:14:22,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-28 02:14:22,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:14:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-28 02:14:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2021-12-28 02:14:22,570 INFO L87 Difference]: Start difference. First operand 16479 states and 22102 transitions. Second operand has 32 states, 32 states have (on average 5.5625) internal successors, (178), 32 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)