./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_label41+token_ring.09.cil-1.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 0e78e762388a6c3c1086d6b78561f9d228d7d6651a9ae559f7246d5d2e2293d4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:38:23,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:38:23,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:38:23,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:38:23,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:38:23,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:38:23,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:38:23,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:38:23,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:38:23,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:38:23,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:38:23,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:38:23,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:38:23,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:38:23,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:38:23,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:38:23,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:38:23,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:38:23,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:38:23,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:38:23,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:38:23,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:38:23,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:38:23,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:38:23,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:38:23,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:38:23,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:38:23,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:38:23,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:38:23,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:38:23,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:38:23,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:38:23,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:38:23,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:38:23,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:38:23,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:38:23,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:38:23,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:38:23,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:38:23,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:38:23,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:38:23,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:38:23,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:38:23,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:38:23,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:38:23,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:38:23,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:38:23,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:38:23,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:38:23,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:38:23,616 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:38:23,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:38:23,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:38:23,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:38:23,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:38:23,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:38:23,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:38:23,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:38:23,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:38:23,618 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:38:23,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:38:23,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:38:23,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:38:23,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:38:23,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:38:23,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:38:23,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:38:23,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:38:23,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:38:23,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:38:23,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:38:23,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:38:23,621 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:38:23,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:38:23,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:38:23,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:38:23,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e78e762388a6c3c1086d6b78561f9d228d7d6651a9ae559f7246d5d2e2293d4 [2021-12-14 15:38:23,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:38:23,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:38:23,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:38:23,811 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:38:23,812 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:38:23,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.09.cil-1.c [2021-12-14 15:38:23,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01db10c5a/9669724b3e1a4636843ac265b72953dc/FLAGefee1d89f [2021-12-14 15:38:24,581 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:38:24,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.09.cil-1.c [2021-12-14 15:38:24,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01db10c5a/9669724b3e1a4636843ac265b72953dc/FLAGefee1d89f [2021-12-14 15:38:24,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01db10c5a/9669724b3e1a4636843ac265b72953dc [2021-12-14 15:38:24,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:38:24,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:38:24,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:38:24,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:38:24,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:38:24,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:38:24" (1/1) ... [2021-12-14 15:38:24,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75391d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:24, skipping insertion in model container [2021-12-14 15:38:24,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:38:24" (1/1) ... [2021-12-14 15:38:24,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:38:25,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:38:26,221 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_label41+token_ring.09.cil-1.c[376251,376264] [2021-12-14 15:38:26,242 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_label41+token_ring.09.cil-1.c[383339,383352] [2021-12-14 15:38:26,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:26,419 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:38:26,973 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_label41+token_ring.09.cil-1.c[376251,376264] [2021-12-14 15:38:26,983 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_label41+token_ring.09.cil-1.c[383339,383352] [2021-12-14 15:38:27,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:27,062 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:38:27,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27 WrapperNode [2021-12-14 15:38:27,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:38:27,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:27,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:38:27,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:38:27,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,372 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2021-12-14 15:38:27,373 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:27,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:38:27,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:38:27,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:38:27,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:38:27,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:38:27,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:38:27,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:38:27,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (1/1) ... [2021-12-14 15:38:27,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:38:27,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:38:27,794 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) [2021-12-14 15:38:27,797 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 [2021-12-14 15:38:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:38:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:38:27,970 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:38:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:38:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:38:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:38:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:38:27,973 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:38:27,973 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:38:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:38:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:38:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:38:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:38:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:38:27,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:38:27,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:38:28,084 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:38:28,090 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:38:33,038 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:38:33,059 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:38:33,060 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-14 15:38:33,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:33 BoogieIcfgContainer [2021-12-14 15:38:33,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:38:33,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:38:33,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:38:33,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:38:33,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:38:24" (1/3) ... [2021-12-14 15:38:33,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@befed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:33, skipping insertion in model container [2021-12-14 15:38:33,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:27" (2/3) ... [2021-12-14 15:38:33,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@befed8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:33, skipping insertion in model container [2021-12-14 15:38:33,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:33" (3/3) ... [2021-12-14 15:38:33,069 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.09.cil-1.c [2021-12-14 15:38:33,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:38:33,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:38:33,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:38:33,117 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 [2021-12-14 15:38:33,118 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:38:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-14 15:38:33,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:33,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:33,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:33,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:33,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2021-12-14 15:38:33,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:33,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416712512] [2021-12-14 15:38:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:33,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:33,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:33,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416712512] [2021-12-14 15:38:33,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416712512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:33,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:33,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:38:33,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867088107] [2021-12-14 15:38:33,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:33,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:38:33,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:38:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:38:33,504 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-14 15:38:34,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:34,546 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2021-12-14 15:38:34,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:38:34,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:34,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:34,567 INFO L225 Difference]: With dead ends: 5081 [2021-12-14 15:38:34,567 INFO L226 Difference]: Without dead ends: 2532 [2021-12-14 15:38:34,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:38:34,577 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12404 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16949 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:34,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 16949 Invalid, 601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:38:34,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-12-14 15:38:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2021-12-14 15:38:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-14 15:38:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2021-12-14 15:38:34,786 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2021-12-14 15:38:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:34,787 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2021-12-14 15:38:34,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2021-12-14 15:38:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2021-12-14 15:38:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:34,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:34,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:34,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:38:34,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2021-12-14 15:38:34,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:34,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685488750] [2021-12-14 15:38:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:34,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:35,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:35,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685488750] [2021-12-14 15:38:35,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685488750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:35,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:35,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:38:35,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773944010] [2021-12-14 15:38:35,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:35,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:38:35,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:38:35,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:38:35,065 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-14 15:38:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:36,811 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2021-12-14 15:38:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:38:36,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:36,822 INFO L225 Difference]: With dead ends: 3223 [2021-12-14 15:38:36,823 INFO L226 Difference]: Without dead ends: 2938 [2021-12-14 15:38:36,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:36,826 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17198 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:36,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17198 Invalid, 1628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-12-14 15:38:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2021-12-14 15:38:36,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:38:36,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2021-12-14 15:38:36,894 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2021-12-14 15:38:36,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:36,895 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2021-12-14 15:38:36,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2021-12-14 15:38:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2021-12-14 15:38:36,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:36,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:36,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:36,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:38:36,898 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:36,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2021-12-14 15:38:36,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:36,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123906499] [2021-12-14 15:38:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:36,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:37,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:37,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123906499] [2021-12-14 15:38:37,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123906499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:37,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:37,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:37,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108806517] [2021-12-14 15:38:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:37,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:37,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:37,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:37,014 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:38,015 INFO L93 Difference]: Finished difference Result 3537 states and 6220 transitions. [2021-12-14 15:38:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:38,025 INFO L225 Difference]: With dead ends: 3537 [2021-12-14 15:38:38,025 INFO L226 Difference]: Without dead ends: 2954 [2021-12-14 15:38:38,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:38,029 INFO L933 BasicCegarLoop]: 4465 mSDtfsCounter, 4962 mSDsluCounter, 12460 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4979 SdHoareTripleChecker+Valid, 16925 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:38,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4979 Valid, 16925 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:38:38,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2021-12-14 15:38:38,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2721. [2021-12-14 15:38:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8063789868667917) internal successors, (4814), 2668 states have internal predecessors, (4814), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:38:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4899 transitions. [2021-12-14 15:38:38,090 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4899 transitions. Word has length 145 [2021-12-14 15:38:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:38,091 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4899 transitions. [2021-12-14 15:38:38,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:38,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4899 transitions. [2021-12-14 15:38:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:38,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:38,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:38,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:38:38,094 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:38,094 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2021-12-14 15:38:38,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:38,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177258445] [2021-12-14 15:38:38,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:38,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:38,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:38,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177258445] [2021-12-14 15:38:38,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177258445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:38,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:38,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:38,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150937028] [2021-12-14 15:38:38,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:38,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:38,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:38,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:38,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:38,204 INFO L87 Difference]: Start difference. First operand 2721 states and 4899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:40,245 INFO L93 Difference]: Finished difference Result 3938 states and 6853 transitions. [2021-12-14 15:38:40,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:40,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:40,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:40,257 INFO L225 Difference]: With dead ends: 3938 [2021-12-14 15:38:40,257 INFO L226 Difference]: Without dead ends: 3355 [2021-12-14 15:38:40,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:40,260 INFO L933 BasicCegarLoop]: 4739 mSDtfsCounter, 5180 mSDsluCounter, 17378 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22117 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:40,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22117 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:38:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2021-12-14 15:38:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 2999. [2021-12-14 15:38:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2918 states have (on average 1.7840986977381768) internal successors, (5206), 2922 states have internal predecessors, (5206), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-14 15:38:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5329 transitions. [2021-12-14 15:38:40,328 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5329 transitions. Word has length 145 [2021-12-14 15:38:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:40,329 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 5329 transitions. [2021-12-14 15:38:40,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5329 transitions. [2021-12-14 15:38:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:40,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:40,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:40,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:38:40,337 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:40,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2021-12-14 15:38:40,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:40,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807107079] [2021-12-14 15:38:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:40,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:40,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:40,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807107079] [2021-12-14 15:38:40,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807107079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:40,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:40,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:40,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39706380] [2021-12-14 15:38:40,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:40,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:40,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:40,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:40,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:40,449 INFO L87 Difference]: Start difference. First operand 2999 states and 5329 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:42,468 INFO L93 Difference]: Finished difference Result 4992 states and 8519 transitions. [2021-12-14 15:38:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:42,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:42,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:42,482 INFO L225 Difference]: With dead ends: 4992 [2021-12-14 15:38:42,483 INFO L226 Difference]: Without dead ends: 4131 [2021-12-14 15:38:42,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:42,487 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 5176 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2355 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 22106 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:42,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5192 Valid, 22106 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2355 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:38:42,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-12-14 15:38:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3558. [2021-12-14 15:38:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7493434490808286) internal successors, (5995), 3433 states have internal predecessors, (5995), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:38:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6198 transitions. [2021-12-14 15:38:42,579 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6198 transitions. Word has length 145 [2021-12-14 15:38:42,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:42,580 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6198 transitions. [2021-12-14 15:38:42,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:42,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6198 transitions. [2021-12-14 15:38:42,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:42,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:42,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:42,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:38:42,582 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:42,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2021-12-14 15:38:42,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:42,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912848441] [2021-12-14 15:38:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:42,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:42,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:42,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:42,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:42,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:42,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912848441] [2021-12-14 15:38:42,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912848441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:42,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:42,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:42,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421145659] [2021-12-14 15:38:42,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:42,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:42,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:42,689 INFO L87 Difference]: Start difference. First operand 3558 states and 6198 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:43,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:43,895 INFO L93 Difference]: Finished difference Result 5541 states and 9379 transitions. [2021-12-14 15:38:43,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:43,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:43,908 INFO L225 Difference]: With dead ends: 5541 [2021-12-14 15:38:43,908 INFO L226 Difference]: Without dead ends: 4121 [2021-12-14 15:38:43,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:43,913 INFO L933 BasicCegarLoop]: 4452 mSDtfsCounter, 4829 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 21024 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:43,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4846 Valid, 21024 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:38:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4121 states. [2021-12-14 15:38:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4121 to 3558. [2021-12-14 15:38:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.7478844470382258) internal successors, (5990), 3433 states have internal predecessors, (5990), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:38:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6193 transitions. [2021-12-14 15:38:44,025 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6193 transitions. Word has length 145 [2021-12-14 15:38:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:44,026 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6193 transitions. [2021-12-14 15:38:44,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6193 transitions. [2021-12-14 15:38:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:44,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:44,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:44,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:38:44,029 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:44,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2021-12-14 15:38:44,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:44,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034353211] [2021-12-14 15:38:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:44,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:44,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:44,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:44,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:44,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:44,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034353211] [2021-12-14 15:38:44,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034353211] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:44,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:44,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:44,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528265535] [2021-12-14 15:38:44,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:44,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:44,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:44,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:44,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:44,134 INFO L87 Difference]: Start difference. First operand 3558 states and 6193 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:45,106 INFO L93 Difference]: Finished difference Result 5535 states and 9352 transitions. [2021-12-14 15:38:45,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:45,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:45,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:45,131 INFO L225 Difference]: With dead ends: 5535 [2021-12-14 15:38:45,131 INFO L226 Difference]: Without dead ends: 4115 [2021-12-14 15:38:45,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:45,137 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 5011 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5028 SdHoareTripleChecker+Valid, 16878 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:45,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5028 Valid, 16878 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:38:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-12-14 15:38:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3558. [2021-12-14 15:38:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.746425444995623) internal successors, (5985), 3433 states have internal predecessors, (5985), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:38:45,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6188 transitions. [2021-12-14 15:38:45,263 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6188 transitions. Word has length 145 [2021-12-14 15:38:45,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:45,263 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6188 transitions. [2021-12-14 15:38:45,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6188 transitions. [2021-12-14 15:38:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:45,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:45,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:45,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:38:45,266 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:45,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:45,267 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2021-12-14 15:38:45,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:45,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303081643] [2021-12-14 15:38:45,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:45,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:45,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:45,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303081643] [2021-12-14 15:38:45,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303081643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:45,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:45,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:45,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634805013] [2021-12-14 15:38:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:45,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:45,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:45,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:45,371 INFO L87 Difference]: Start difference. First operand 3558 states and 6188 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:46,437 INFO L93 Difference]: Finished difference Result 5529 states and 9325 transitions. [2021-12-14 15:38:46,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:46,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:46,447 INFO L225 Difference]: With dead ends: 5529 [2021-12-14 15:38:46,448 INFO L226 Difference]: Without dead ends: 4109 [2021-12-14 15:38:46,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:46,453 INFO L933 BasicCegarLoop]: 4444 mSDtfsCounter, 4825 mSDsluCounter, 16572 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4842 SdHoareTripleChecker+Valid, 21016 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:46,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4842 Valid, 21016 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:38:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-12-14 15:38:46,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 3558. [2021-12-14 15:38:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3558 states, 3427 states have (on average 1.74496644295302) internal successors, (5980), 3433 states have internal predecessors, (5980), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:38:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 6183 transitions. [2021-12-14 15:38:46,570 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 6183 transitions. Word has length 145 [2021-12-14 15:38:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:46,571 INFO L470 AbstractCegarLoop]: Abstraction has 3558 states and 6183 transitions. [2021-12-14 15:38:46,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:46,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 6183 transitions. [2021-12-14 15:38:46,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:46,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:46,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:46,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:38:46,574 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2021-12-14 15:38:46,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:46,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771414556] [2021-12-14 15:38:46,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:46,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:46,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:46,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:46,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771414556] [2021-12-14 15:38:46,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771414556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:46,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:46,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:46,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237950305] [2021-12-14 15:38:46,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:46,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:46,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:46,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:46,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:46,677 INFO L87 Difference]: Start difference. First operand 3558 states and 6183 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:48,592 INFO L93 Difference]: Finished difference Result 7013 states and 11620 transitions. [2021-12-14 15:38:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:48,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:48,602 INFO L225 Difference]: With dead ends: 7013 [2021-12-14 15:38:48,603 INFO L226 Difference]: Without dead ends: 5593 [2021-12-14 15:38:48,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:48,606 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 5154 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 22083 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:48,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 22083 Invalid, 2368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5593 states. [2021-12-14 15:38:48,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5593 to 4694. [2021-12-14 15:38:48,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4463 states have (on average 1.69572036746583) internal successors, (7568), 4473 states have internal predecessors, (7568), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-14 15:38:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 7937 transitions. [2021-12-14 15:38:48,751 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 7937 transitions. Word has length 145 [2021-12-14 15:38:48,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:48,752 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 7937 transitions. [2021-12-14 15:38:48,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 7937 transitions. [2021-12-14 15:38:48,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:48,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:48,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:48,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:38:48,755 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:48,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2021-12-14 15:38:48,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:48,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014912610] [2021-12-14 15:38:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:48,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:48,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:48,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014912610] [2021-12-14 15:38:48,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014912610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:48,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:48,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:48,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695317392] [2021-12-14 15:38:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:48,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:48,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:48,851 INFO L87 Difference]: Start difference. First operand 4694 states and 7937 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:50,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:50,708 INFO L93 Difference]: Finished difference Result 11095 states and 17992 transitions. [2021-12-14 15:38:50,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:50,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:50,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:50,731 INFO L225 Difference]: With dead ends: 11095 [2021-12-14 15:38:50,731 INFO L226 Difference]: Without dead ends: 8539 [2021-12-14 15:38:50,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:50,742 INFO L933 BasicCegarLoop]: 4702 mSDtfsCounter, 5156 mSDsluCounter, 17374 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:50,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 22076 Invalid, 2360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:38:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8539 states. [2021-12-14 15:38:50,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8539 to 6967. [2021-12-14 15:38:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6967 states, 6536 states have (on average 1.6435128518971849) internal successors, (10742), 6554 states have internal predecessors, (10742), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-14 15:38:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6967 states to 6967 states and 11461 transitions. [2021-12-14 15:38:50,996 INFO L78 Accepts]: Start accepts. Automaton has 6967 states and 11461 transitions. Word has length 145 [2021-12-14 15:38:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:50,996 INFO L470 AbstractCegarLoop]: Abstraction has 6967 states and 11461 transitions. [2021-12-14 15:38:50,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 6967 states and 11461 transitions. [2021-12-14 15:38:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:51,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:51,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:51,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:38:51,001 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:51,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:51,001 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2021-12-14 15:38:51,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:51,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360973641] [2021-12-14 15:38:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:51,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:51,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:51,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360973641] [2021-12-14 15:38:51,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360973641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:51,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:51,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:51,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737157296] [2021-12-14 15:38:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:51,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:51,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:51,095 INFO L87 Difference]: Start difference. First operand 6967 states and 11461 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:54,155 INFO L93 Difference]: Finished difference Result 21204 states and 33776 transitions. [2021-12-14 15:38:54,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:54,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:54,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:54,200 INFO L225 Difference]: With dead ends: 21204 [2021-12-14 15:38:54,201 INFO L226 Difference]: Without dead ends: 16375 [2021-12-14 15:38:54,220 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 [2021-12-14 15:38:54,221 INFO L933 BasicCegarLoop]: 4830 mSDtfsCounter, 5233 mSDsluCounter, 17363 mSDsCounter, 0 mSdLazyCounter, 2667 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 22193 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:54,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5248 Valid, 22193 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2667 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:38:54,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16375 states. [2021-12-14 15:38:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16375 to 11417. [2021-12-14 15:38:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11417 states, 10602 states have (on average 1.6021505376344085) internal successors, (16986), 10636 states have internal predecessors, (16986), 583 states have call successors, (583), 198 states have call predecessors, (583), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-12-14 15:38:54,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11417 states to 11417 states and 18427 transitions. [2021-12-14 15:38:54,786 INFO L78 Accepts]: Start accepts. Automaton has 11417 states and 18427 transitions. Word has length 145 [2021-12-14 15:38:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:54,787 INFO L470 AbstractCegarLoop]: Abstraction has 11417 states and 18427 transitions. [2021-12-14 15:38:54,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 11417 states and 18427 transitions. [2021-12-14 15:38:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:54,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:54,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:54,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:38:54,793 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:54,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:54,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2021-12-14 15:38:54,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:54,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608717871] [2021-12-14 15:38:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:54,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:54,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:38:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:54,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:38:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:54,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:38:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:54,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:54,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608717871] [2021-12-14 15:38:54,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608717871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:54,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:54,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:54,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604303303] [2021-12-14 15:38:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:54,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:54,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:54,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:54,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:54,941 INFO L87 Difference]: Start difference. First operand 11417 states and 18427 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:58,762 INFO L93 Difference]: Finished difference Result 38692 states and 61336 transitions. [2021-12-14 15:38:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:58,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:38:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:58,854 INFO L225 Difference]: With dead ends: 38692 [2021-12-14 15:38:58,854 INFO L226 Difference]: Without dead ends: 29413 [2021-12-14 15:38:58,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:58,887 INFO L933 BasicCegarLoop]: 4686 mSDtfsCounter, 5441 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5467 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:58,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5467 Valid, 22052 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:38:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29413 states. [2021-12-14 15:38:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29413 to 20378. [2021-12-14 15:38:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20378 states, 18811 states have (on average 1.5741853171016957) internal successors, (29612), 18877 states have internal predecessors, (29612), 1111 states have call successors, (1111), 390 states have call predecessors, (1111), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-12-14 15:38:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20378 states to 20378 states and 32627 transitions. [2021-12-14 15:38:59,937 INFO L78 Accepts]: Start accepts. Automaton has 20378 states and 32627 transitions. Word has length 145 [2021-12-14 15:38:59,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:59,937 INFO L470 AbstractCegarLoop]: Abstraction has 20378 states and 32627 transitions. [2021-12-14 15:38:59,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:38:59,937 INFO L276 IsEmpty]: Start isEmpty. Operand 20378 states and 32627 transitions. [2021-12-14 15:38:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:38:59,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:59,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:59,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:38:59,947 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash -560662113, now seen corresponding path program 1 times [2021-12-14 15:38:59,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:59,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441251034] [2021-12-14 15:38:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:59,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:59,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:59,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:38:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:00,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:00,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:00,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441251034] [2021-12-14 15:39:00,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441251034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:00,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:00,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:00,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194639933] [2021-12-14 15:39:00,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:00,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:00,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:00,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:00,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:00,039 INFO L87 Difference]: Start difference. First operand 20378 states and 32627 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:39:04,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:04,997 INFO L93 Difference]: Finished difference Result 73283 states and 116510 transitions. [2021-12-14 15:39:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:39:04,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:39:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:05,163 INFO L225 Difference]: With dead ends: 73283 [2021-12-14 15:39:05,164 INFO L226 Difference]: Without dead ends: 55043 [2021-12-14 15:39:05,217 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 [2021-12-14 15:39:05,218 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5401 mSDsluCounter, 17366 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:05,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5427 Valid, 22047 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:39:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55043 states. [2021-12-14 15:39:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55043 to 38267. [2021-12-14 15:39:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38267 states, 35228 states have (on average 1.5582491200181674) internal successors, (54894), 35358 states have internal predecessors, (54894), 2135 states have call successors, (2135), 774 states have call predecessors, (2135), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-12-14 15:39:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38267 states to 38267 states and 61479 transitions. [2021-12-14 15:39:07,617 INFO L78 Accepts]: Start accepts. Automaton has 38267 states and 61479 transitions. Word has length 145 [2021-12-14 15:39:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:07,617 INFO L470 AbstractCegarLoop]: Abstraction has 38267 states and 61479 transitions. [2021-12-14 15:39:07,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:39:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 38267 states and 61479 transitions. [2021-12-14 15:39:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:39:07,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:07,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:39:07,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:39:07,635 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:07,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash -89305763, now seen corresponding path program 1 times [2021-12-14 15:39:07,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:07,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738925574] [2021-12-14 15:39:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:07,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:07,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:07,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738925574] [2021-12-14 15:39:07,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738925574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:07,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:07,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:07,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433407897] [2021-12-14 15:39:07,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:07,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:07,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:07,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:07,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:07,744 INFO L87 Difference]: Start difference. First operand 38267 states and 61479 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:39:16,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:16,570 INFO L93 Difference]: Finished difference Result 141282 states and 226916 transitions. [2021-12-14 15:39:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:39:16,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2021-12-14 15:39:16,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:16,920 INFO L225 Difference]: With dead ends: 141282 [2021-12-14 15:39:16,920 INFO L226 Difference]: Without dead ends: 105153 [2021-12-14 15:39:17,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:39:17,024 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 5260 mSDsluCounter, 16852 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5275 SdHoareTripleChecker+Valid, 21443 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:17,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5275 Valid, 21443 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:39:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105153 states. [2021-12-14 15:39:21,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105153 to 73980. [2021-12-14 15:39:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73980 states, 68061 states have (on average 1.550373929269332) internal successors, (105520), 68319 states have internal predecessors, (105520), 4119 states have call successors, (4119), 1542 states have call predecessors, (4119), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2021-12-14 15:39:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73980 states to 73980 states and 120575 transitions. [2021-12-14 15:39:21,802 INFO L78 Accepts]: Start accepts. Automaton has 73980 states and 120575 transitions. Word has length 145 [2021-12-14 15:39:21,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:21,802 INFO L470 AbstractCegarLoop]: Abstraction has 73980 states and 120575 transitions. [2021-12-14 15:39:21,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2021-12-14 15:39:21,803 INFO L276 IsEmpty]: Start isEmpty. Operand 73980 states and 120575 transitions. [2021-12-14 15:39:21,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-14 15:39:21,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:21,835 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:39:21,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:39:21,835 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:21,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:21,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1736668705, now seen corresponding path program 1 times [2021-12-14 15:39:21,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:21,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110570644] [2021-12-14 15:39:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:21,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:21,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:21,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110570644] [2021-12-14 15:39:21,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110570644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:21,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:21,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:21,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167927182] [2021-12-14 15:39:21,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:21,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:21,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:21,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:21,951 INFO L87 Difference]: Start difference. First operand 73980 states and 120575 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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)