./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.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 2dda75b6d46698b5258f612b82d0e93d324481eaa047be7e62672a619c582b4e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:39:19,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:39:19,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:39:19,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:39:19,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:39:19,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:39:19,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:39:19,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:39:19,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:39:19,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:39:19,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:39:19,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:39:19,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:39:19,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:39:19,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:39:19,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:39:19,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:39:19,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:39:19,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:39:19,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:39:19,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:39:19,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:39:19,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:39:19,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:39:19,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:39:19,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:39:19,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:39:19,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:39:19,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:39:19,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:39:19,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:39:19,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:39:19,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:39:19,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:39:19,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:39:19,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:39:19,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:39:19,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:39:19,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:39:19,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:39:19,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:39:19,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:39:19,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:39:19,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:39:19,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:39:19,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:39:19,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:39:19,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:39:19,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:39:19,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:39:19,596 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:39:19,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:39:19,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:39:19,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:39:19,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:39:19,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:39:19,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:39:19,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:39:19,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:39:19,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:39:19,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:39:19,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:39:19,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:39:19,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:39:19,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:39:19,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:39:19,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:39:19,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:39:19,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:39:19,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:39:19,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:39:19,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:39:19,601 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:39:19,601 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:39:19,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:39:19,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:39:19,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dda75b6d46698b5258f612b82d0e93d324481eaa047be7e62672a619c582b4e [2021-12-22 12:39:19,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:39:19,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:39:19,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:39:19,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:39:19,799 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:39:19,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c [2021-12-22 12:39:19,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab9a975d/fbd74d31b4f94e3481943908d99ed97c/FLAG2111fe478 [2021-12-22 12:39:20,583 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:39:20,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.06.cil-2.c [2021-12-22 12:39:20,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab9a975d/fbd74d31b4f94e3481943908d99ed97c/FLAG2111fe478 [2021-12-22 12:39:20,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab9a975d/fbd74d31b4f94e3481943908d99ed97c [2021-12-22 12:39:20,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:39:20,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:39:20,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:39:20,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:39:20,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:39:20,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:39:20" (1/1) ... [2021-12-22 12:39:20,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0ea532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:20, skipping insertion in model container [2021-12-22 12:39:20,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:39:20" (1/1) ... [2021-12-22 12:39:20,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:39:20,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:39:22,183 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/Problem05_label46+token_ring.06.cil-2.c[382357,382370] [2021-12-22 12:39:22,203 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/Problem05_label46+token_ring.06.cil-2.c[383339,383352] [2021-12-22 12:39:22,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:39:22,358 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:39:22,922 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/Problem05_label46+token_ring.06.cil-2.c[382357,382370] [2021-12-22 12:39:22,931 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/Problem05_label46+token_ring.06.cil-2.c[383339,383352] [2021-12-22 12:39:22,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:39:22,986 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:39:22,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22 WrapperNode [2021-12-22 12:39:22,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:39:22,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:39:22,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:39:22,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:39:22,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,300 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2021-12-22 12:39:23,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:39:23,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:39:23,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:39:23,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:39:23,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:39:23,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:39:23,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:39:23,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:39:23,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (1/1) ... [2021-12-22 12:39:23,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:39:23,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:39:23,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 12:39:23,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 12:39:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:39:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:39:23,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:39:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:39:23,854 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:39:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:39:23,874 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:39:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:39:23,874 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:39:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:39:23,874 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:39:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:39:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:39:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:39:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:39:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:39:24,010 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:39:24,011 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:39:28,768 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:39:28,819 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:39:28,820 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-22 12:39:28,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:39:28 BoogieIcfgContainer [2021-12-22 12:39:28,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:39:28,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:39:28,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:39:28,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:39:28,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:39:20" (1/3) ... [2021-12-22 12:39:28,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c0ccd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:39:28, skipping insertion in model container [2021-12-22 12:39:28,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:39:22" (2/3) ... [2021-12-22 12:39:28,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c0ccd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:39:28, skipping insertion in model container [2021-12-22 12:39:28,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:39:28" (3/3) ... [2021-12-22 12:39:28,838 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.06.cil-2.c [2021-12-22 12:39:28,841 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:39:28,841 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:39:28,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:39:28,890 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 12:39:28,890 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:39:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-22 12:39:28,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:28,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:28,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:28,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:28,960 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-12-22 12:39:28,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:28,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067510636] [2021-12-22 12:39:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:28,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:29,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:29,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:29,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067510636] [2021-12-22 12:39:29,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067510636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:29,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:29,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:39:29,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708252071] [2021-12-22 12:39:29,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:29,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:39:29,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:29,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:39:29,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:39:29,333 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:29,939 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2021-12-22 12:39:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:39:29,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:29,957 INFO L225 Difference]: With dead ends: 4896 [2021-12-22 12:39:29,957 INFO L226 Difference]: Without dead ends: 2424 [2021-12-22 12:39:29,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:39:29,965 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:29,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16728 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:39:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-12-22 12:39:30,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2021-12-22 12:39:30,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-22 12:39:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2021-12-22 12:39:30,051 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2021-12-22 12:39:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:30,052 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2021-12-22 12:39:30,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:30,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2021-12-22 12:39:30,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:30,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:30,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:30,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:39:30,055 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:30,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:30,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2021-12-22 12:39:30,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:30,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931302882] [2021-12-22 12:39:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:30,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:30,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:30,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:30,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:30,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931302882] [2021-12-22 12:39:30,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931302882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:30,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:30,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:30,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050281617] [2021-12-22 12:39:30,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:30,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:30,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:30,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:30,198 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:31,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:31,936 INFO L93 Difference]: Finished difference Result 2945 states and 5262 transitions. [2021-12-22 12:39:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:31,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:31,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:31,946 INFO L225 Difference]: With dead ends: 2945 [2021-12-22 12:39:31,946 INFO L226 Difference]: Without dead ends: 2732 [2021-12-22 12:39:31,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:31,949 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 4776 mSDsluCounter, 17002 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 21542 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:31,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 21542 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 12:39:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-12-22 12:39:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2571. [2021-12-22 12:39:31,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8177124702144558) internal successors, (4577), 2522 states have internal predecessors, (4577), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-22 12:39:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4658 transitions. [2021-12-22 12:39:32,002 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4658 transitions. Word has length 112 [2021-12-22 12:39:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:32,002 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4658 transitions. [2021-12-22 12:39:32,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4658 transitions. [2021-12-22 12:39:32,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:32,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:32,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:32,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:39:32,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2021-12-22 12:39:32,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:32,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277253683] [2021-12-22 12:39:32,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:32,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:32,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:32,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:32,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277253683] [2021-12-22 12:39:32,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277253683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:32,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:32,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:32,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376137956] [2021-12-22 12:39:32,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:32,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:32,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:32,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:32,193 INFO L87 Difference]: Start difference. First operand 2571 states and 4658 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:33,718 INFO L93 Difference]: Finished difference Result 3704 states and 6454 transitions. [2021-12-22 12:39:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:33,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:33,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:33,731 INFO L225 Difference]: With dead ends: 3704 [2021-12-22 12:39:33,731 INFO L226 Difference]: Without dead ends: 3270 [2021-12-22 12:39:33,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:33,735 INFO L933 BasicCegarLoop]: 4487 mSDtfsCounter, 4800 mSDsluCounter, 16923 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 21410 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:33,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4813 Valid, 21410 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:39:33,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2021-12-22 12:39:33,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2981. [2021-12-22 12:39:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2884 states have (on average 1.782246879334258) internal successors, (5140), 2890 states have internal predecessors, (5140), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-22 12:39:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5291 transitions. [2021-12-22 12:39:33,878 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5291 transitions. Word has length 112 [2021-12-22 12:39:33,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:33,878 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 5291 transitions. [2021-12-22 12:39:33,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5291 transitions. [2021-12-22 12:39:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:33,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:33,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:33,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:39:33,880 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:33,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2021-12-22 12:39:33,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:33,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544461710] [2021-12-22 12:39:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:33,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:33,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:33,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:33,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544461710] [2021-12-22 12:39:33,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544461710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:33,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:33,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:33,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145973950] [2021-12-22 12:39:33,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:33,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:33,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:33,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:33,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:33,966 INFO L87 Difference]: Start difference. First operand 2981 states and 5291 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:35,394 INFO L93 Difference]: Finished difference Result 5188 states and 8779 transitions. [2021-12-22 12:39:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:35,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:35,410 INFO L225 Difference]: With dead ends: 5188 [2021-12-22 12:39:35,410 INFO L226 Difference]: Without dead ends: 4344 [2021-12-22 12:39:35,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:35,415 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21525 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:35,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21525 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:39:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2021-12-22 12:39:35,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3803. [2021-12-22 12:39:35,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3618 states have (on average 1.732448866777225) internal successors, (6268), 3628 states have internal predecessors, (6268), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-22 12:39:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6565 transitions. [2021-12-22 12:39:35,504 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6565 transitions. Word has length 112 [2021-12-22 12:39:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:35,505 INFO L470 AbstractCegarLoop]: Abstraction has 3803 states and 6565 transitions. [2021-12-22 12:39:35,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:35,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6565 transitions. [2021-12-22 12:39:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:35,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:35,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:35,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:39:35,511 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:35,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2021-12-22 12:39:35,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:35,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736008867] [2021-12-22 12:39:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:35,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:35,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:35,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:35,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:35,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:35,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:35,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:35,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:35,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736008867] [2021-12-22 12:39:35,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736008867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:35,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:35,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:35,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332686952] [2021-12-22 12:39:35,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:35,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:35,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:35,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:35,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:35,605 INFO L87 Difference]: Start difference. First operand 3803 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:37,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:37,265 INFO L93 Difference]: Finished difference Result 8154 states and 13443 transitions. [2021-12-22 12:39:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:37,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:37,307 INFO L225 Difference]: With dead ends: 8154 [2021-12-22 12:39:37,322 INFO L226 Difference]: Without dead ends: 6488 [2021-12-22 12:39:37,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:37,331 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21522 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:37,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21522 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:39:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-12-22 12:39:37,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5453. [2021-12-22 12:39:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5092 states have (on average 1.6755695208169679) internal successors, (8532), 5110 states have internal predecessors, (8532), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2021-12-22 12:39:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 9139 transitions. [2021-12-22 12:39:37,660 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 9139 transitions. Word has length 112 [2021-12-22 12:39:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:37,661 INFO L470 AbstractCegarLoop]: Abstraction has 5453 states and 9139 transitions. [2021-12-22 12:39:37,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:37,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 9139 transitions. [2021-12-22 12:39:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:37,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:37,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:37,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:39:37,665 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:37,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2021-12-22 12:39:37,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:37,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244341059] [2021-12-22 12:39:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:37,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:37,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:37,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:37,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244341059] [2021-12-22 12:39:37,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244341059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:37,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:37,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:37,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277346005] [2021-12-22 12:39:37,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:37,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:37,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:37,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:37,791 INFO L87 Difference]: Start difference. First operand 5453 states and 9139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:39,458 INFO L93 Difference]: Finished difference Result 14084 states and 22827 transitions. [2021-12-22 12:39:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:39,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:39,546 INFO L225 Difference]: With dead ends: 14084 [2021-12-22 12:39:39,551 INFO L226 Difference]: Without dead ends: 10768 [2021-12-22 12:39:39,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:39,580 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21519 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:39,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21519 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 12:39:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2021-12-22 12:39:40,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 8767. [2021-12-22 12:39:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8054 states have (on average 1.6240377452197665) internal successors, (13080), 8088 states have internal predecessors, (13080), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2021-12-22 12:39:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14361 transitions. [2021-12-22 12:39:40,151 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14361 transitions. Word has length 112 [2021-12-22 12:39:40,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:40,151 INFO L470 AbstractCegarLoop]: Abstraction has 8767 states and 14361 transitions. [2021-12-22 12:39:40,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14361 transitions. [2021-12-22 12:39:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:40,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:40,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:40,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:39:40,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2021-12-22 12:39:40,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:40,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254508009] [2021-12-22 12:39:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:40,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:40,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:40,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:40,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:40,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254508009] [2021-12-22 12:39:40,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254508009] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:40,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:40,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:40,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097982669] [2021-12-22 12:39:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:40,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:40,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:40,258 INFO L87 Difference]: Start difference. First operand 8767 states and 14361 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:42,367 INFO L93 Difference]: Finished difference Result 25942 states and 41783 transitions. [2021-12-22 12:39:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:39:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:42,435 INFO L225 Difference]: With dead ends: 25942 [2021-12-22 12:39:42,435 INFO L226 Difference]: Without dead ends: 19312 [2021-12-22 12:39:42,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:39:42,466 INFO L933 BasicCegarLoop]: 4522 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21516 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:42,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21516 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:39:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2021-12-22 12:39:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 15425. [2021-12-22 12:39:43,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 14008 states have (on average 1.5862364363221018) internal successors, (22220), 14074 states have internal predecessors, (22220), 967 states have call successors, (967), 384 states have call predecessors, (967), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-22 12:39:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 25011 transitions. [2021-12-22 12:39:43,113 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 25011 transitions. Word has length 112 [2021-12-22 12:39:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:43,113 INFO L470 AbstractCegarLoop]: Abstraction has 15425 states and 25011 transitions. [2021-12-22 12:39:43,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 25011 transitions. [2021-12-22 12:39:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:43,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:43,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:43,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:39:43,123 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:43,123 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2021-12-22 12:39:43,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:43,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040272497] [2021-12-22 12:39:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:43,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:43,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:43,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:43,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:43,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040272497] [2021-12-22 12:39:43,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040272497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:43,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:43,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:43,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398000379] [2021-12-22 12:39:43,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:43,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:43,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:43,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:43,207 INFO L87 Difference]: Start difference. First operand 15425 states and 25011 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:46,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:46,168 INFO L93 Difference]: Finished difference Result 55608 states and 89253 transitions. [2021-12-22 12:39:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:39:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:46,294 INFO L225 Difference]: With dead ends: 55608 [2021-12-22 12:39:46,294 INFO L226 Difference]: Without dead ends: 42320 [2021-12-22 12:39:46,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:39:46,341 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 5030 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5050 SdHoareTripleChecker+Valid, 21501 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:46,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5050 Valid, 21501 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 12:39:46,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2021-12-22 12:39:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 28611. [2021-12-22 12:39:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28611 states, 25850 states have (on average 1.565338491295938) internal successors, (40464), 25980 states have internal predecessors, (40464), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-22 12:39:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28611 states to 28611 states and 46633 transitions. [2021-12-22 12:39:47,571 INFO L78 Accepts]: Start accepts. Automaton has 28611 states and 46633 transitions. Word has length 112 [2021-12-22 12:39:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:47,571 INFO L470 AbstractCegarLoop]: Abstraction has 28611 states and 46633 transitions. [2021-12-22 12:39:47,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 28611 states and 46633 transitions. [2021-12-22 12:39:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:47,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:47,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:47,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:39:47,590 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:47,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2021-12-22 12:39:47,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:47,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898440194] [2021-12-22 12:39:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:47,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:47,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:47,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:47,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:47,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898440194] [2021-12-22 12:39:47,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898440194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:47,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:47,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:47,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103827398] [2021-12-22 12:39:47,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:47,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:47,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:47,785 INFO L87 Difference]: Start difference. First operand 28611 states and 46633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:52,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:39:52,784 INFO L93 Difference]: Finished difference Result 105085 states and 171193 transitions. [2021-12-22 12:39:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:39:52,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:39:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:39:53,062 INFO L225 Difference]: With dead ends: 105085 [2021-12-22 12:39:53,063 INFO L226 Difference]: Without dead ends: 78611 [2021-12-22 12:39:53,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:39:53,157 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 4964 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 21493 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:39:53,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 21493 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 12:39:53,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78611 states. [2021-12-22 12:39:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78611 to 55045. [2021-12-22 12:39:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55045 states, 49660 states have (on average 1.5559403946838501) internal successors, (77268), 49918 states have internal predecessors, (77268), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2021-12-22 12:39:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55045 states to 55045 states and 91523 transitions. [2021-12-22 12:39:56,287 INFO L78 Accepts]: Start accepts. Automaton has 55045 states and 91523 transitions. Word has length 112 [2021-12-22 12:39:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:39:56,287 INFO L470 AbstractCegarLoop]: Abstraction has 55045 states and 91523 transitions. [2021-12-22 12:39:56,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:39:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 55045 states and 91523 transitions. [2021-12-22 12:39:56,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:39:56,323 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:39:56,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:39:56,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:39:56,324 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:39:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:39:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2021-12-22 12:39:56,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:39:56,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416152630] [2021-12-22 12:39:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:39:56,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:39:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:39:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:39:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:39:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:39:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:39:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:39:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:39:56,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:39:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416152630] [2021-12-22 12:39:56,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416152630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:39:56,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:39:56,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:39:56,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37501967] [2021-12-22 12:39:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:39:56,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:39:56,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:39:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:39:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:39:56,630 INFO L87 Difference]: Start difference. First operand 55045 states and 91523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:40:05,379 INFO L93 Difference]: Finished difference Result 203331 states and 339677 transitions. [2021-12-22 12:40:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:40:05,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-22 12:40:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:40:06,301 INFO L225 Difference]: With dead ends: 203331 [2021-12-22 12:40:06,301 INFO L226 Difference]: Without dead ends: 150423 [2021-12-22 12:40:06,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:40:06,442 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 4937 mSDsluCounter, 16918 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 21390 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:40:06,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4957 Valid, 21390 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 12:40:06,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150423 states. [2021-12-22 12:40:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150423 to 107785. [2021-12-22 12:40:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107785 states, 97280 states have (on average 1.5522615131578947) internal successors, (151004), 97794 states have internal predecessors, (151004), 6919 states have call successors, (6919), 3072 states have call predecessors, (6919), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2021-12-22 12:40:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107785 states to 107785 states and 185549 transitions. [2021-12-22 12:40:12,892 INFO L78 Accepts]: Start accepts. Automaton has 107785 states and 185549 transitions. Word has length 112 [2021-12-22 12:40:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:40:12,893 INFO L470 AbstractCegarLoop]: Abstraction has 107785 states and 185549 transitions. [2021-12-22 12:40:12,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-22 12:40:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 107785 states and 185549 transitions. [2021-12-22 12:40:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 12:40:12,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:40:12,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:40:12,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:40:12,957 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:40:12,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:40:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2021-12-22 12:40:12,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:40:12,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467526173] [2021-12-22 12:40:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:40:12,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:40:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:40:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-22 12:40:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-22 12:40:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 12:40:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:13,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 12:40:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:40:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:40:13,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:40:13,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467526173] [2021-12-22 12:40:13,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467526173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:40:13,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:40:13,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:40:13,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030664645] [2021-12-22 12:40:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:40:13,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:40:13,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:40:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:40:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:40:13,026 INFO L87 Difference]: Start difference. First operand 107785 states and 185549 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)