./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.12.cil-2.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_label40+token_ring.12.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e81bb624b13c4231a79ab1bd2052849a1a89cc393bc6bb2c02746b61da23cad6 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:37:25,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:37:25,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:37:25,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:37:25,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:37:25,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:37:25,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:37:25,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:37:25,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:37:25,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:37:25,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:37:25,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:37:25,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:37:25,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:37:25,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:37:25,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:37:25,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:37:25,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:37:25,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:37:25,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:37:25,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:37:25,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:37:25,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:37:25,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:37:25,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:37:25,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:37:25,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:37:25,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:37:25,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:37:25,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:37:25,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:37:25,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:37:25,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:37:25,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:37:25,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:37:25,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:37:25,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:37:25,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:37:25,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:37:25,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:37:25,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:37:25,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:37:25,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:37:25,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:37:25,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:37:25,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:37:25,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:37:25,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:37:25,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:37:25,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:37:25,695 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:37:25,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:37:25,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:37:25,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:37:25,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:37:25,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:37:25,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:37:25,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:37:25,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:37:25,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:37:25,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:37:25,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:37:25,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:37:25,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:37:25,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:37:25,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:37:25,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:37:25,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:37:25,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:37:25,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:37:25,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:37:25,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:37:25,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:37:25,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:37:25,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:37:25,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:37:25,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e81bb624b13c4231a79ab1bd2052849a1a89cc393bc6bb2c02746b61da23cad6 [2021-12-14 15:37:25,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:37:25,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:37:25,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:37:25,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:37:25,956 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:37:25,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.12.cil-2.c [2021-12-14 15:37:26,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ec91a2f/88ee620e544b49f3bf0ee3fdda2d4c34/FLAG126517e26 [2021-12-14 15:37:26,776 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:37:26,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.12.cil-2.c [2021-12-14 15:37:26,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ec91a2f/88ee620e544b49f3bf0ee3fdda2d4c34/FLAG126517e26 [2021-12-14 15:37:27,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ec91a2f/88ee620e544b49f3bf0ee3fdda2d4c34 [2021-12-14 15:37:27,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:37:27,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:37:27,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:37:27,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:37:27,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:37:27,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:37:27" (1/1) ... [2021-12-14 15:37:27,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1044674d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:27, skipping insertion in model container [2021-12-14 15:37:27,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:37:27" (1/1) ... [2021-12-14 15:37:27,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:37:27,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:37:28,865 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_label40+token_ring.12.cil-2.c[377069,377082] [2021-12-14 15:37:28,892 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_label40+token_ring.12.cil-2.c[383339,383352] [2021-12-14 15:37:29,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:37:29,174 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:37:29,829 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_label40+token_ring.12.cil-2.c[377069,377082] [2021-12-14 15:37:29,838 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_label40+token_ring.12.cil-2.c[383339,383352] [2021-12-14 15:37:29,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:37:29,908 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:37:29,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29 WrapperNode [2021-12-14 15:37:29,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:37:29,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:37:29,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:37:29,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:37:29,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:29,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,319 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-14 15:37:30,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:37:30,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:37:30,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:37:30,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:37:30,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:37:30,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:37:30,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:37:30,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:37:30,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (1/1) ... [2021-12-14 15:37:30,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:37:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:37:30,797 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 15:37:30,821 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 15:37:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:37:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:37:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:37:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:37:30,874 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:37:30,874 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:37:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:37:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:37:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:37:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:37:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:37:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:37:30,875 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:37:30,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:37:30,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:37:30,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:37:31,035 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:37:31,036 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:37:35,833 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:37:35,856 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:37:35,856 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-14 15:37:35,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:37:35 BoogieIcfgContainer [2021-12-14 15:37:35,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:37:35,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:37:35,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:37:35,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:37:35,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:37:27" (1/3) ... [2021-12-14 15:37:35,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a145067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:37:35, skipping insertion in model container [2021-12-14 15:37:35,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:37:29" (2/3) ... [2021-12-14 15:37:35,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a145067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:37:35, skipping insertion in model container [2021-12-14 15:37:35,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:37:35" (3/3) ... [2021-12-14 15:37:35,869 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.12.cil-2.c [2021-12-14 15:37:35,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:37:35,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:37:35,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:37:35,914 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 15:37:35,915 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:37:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:37:36,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:36,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:36,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:36,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:36,056 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-14 15:37:36,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:36,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513839376] [2021-12-14 15:37:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:36,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:36,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:36,509 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 15:37:36,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:36,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513839376] [2021-12-14 15:37:36,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513839376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:36,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:36,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:37:36,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7045978] [2021-12-14 15:37:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:36,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:37:36,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:36,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:37:36,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:37:36,541 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 15:37:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:37,919 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-14 15:37:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:37:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:37,940 INFO L225 Difference]: With dead ends: 5266 [2021-12-14 15:37:37,941 INFO L226 Difference]: Without dead ends: 2640 [2021-12-14 15:37:37,949 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 15:37:37,951 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17168 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:37,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17168 Invalid, 763 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:37:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-14 15:37:38,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-14 15:37:38,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:37:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-14 15:37:38,077 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-14 15:37:38,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:38,077 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-14 15:37:38,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 15:37:38,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-14 15:37:38,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:38,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:38,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:38,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:37:38,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:38,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-14 15:37:38,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:38,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672741772] [2021-12-14 15:37:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:38,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:38,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:38,250 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 15:37:38,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:38,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672741772] [2021-12-14 15:37:38,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672741772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:38,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:38,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:37:38,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932923222] [2021-12-14 15:37:38,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:38,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:37:38,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:38,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:37:38,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:37:38,254 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 15:37:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:39,503 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-14 15:37:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:37:39,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:39,514 INFO L225 Difference]: With dead ends: 3002 [2021-12-14 15:37:39,515 INFO L226 Difference]: Without dead ends: 2640 [2021-12-14 15:37:39,517 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 15:37:39,518 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16895 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:39,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16895 Invalid, 762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:37:39,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-14 15:37:39,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-14 15:37:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-14 15:37:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-14 15:37:39,591 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-14 15:37:39,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:39,592 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-14 15:37:39,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 15:37:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-14 15:37:39,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:39,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:39,594 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:39,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:37:39,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:39,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-14 15:37:39,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:39,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116096392] [2021-12-14 15:37:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:39,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:39,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:39,751 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 15:37:39,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:39,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116096392] [2021-12-14 15:37:39,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116096392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:39,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:39,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:37:39,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693065912] [2021-12-14 15:37:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:39,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:37:39,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:39,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:37:39,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:37:39,753 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 15:37:42,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:42,211 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-14 15:37:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:37:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:42,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:42,220 INFO L225 Difference]: With dead ends: 3514 [2021-12-14 15:37:42,221 INFO L226 Difference]: Without dead ends: 3157 [2021-12-14 15:37:42,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:37:42,223 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12878 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17543 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:42,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17543 Invalid, 2068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:37:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-14 15:37:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-14 15:37:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-14 15:37:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-14 15:37:42,285 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-14 15:37:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:42,286 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-14 15:37:42,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 15:37:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-14 15:37:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:42,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:42,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:42,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:37:42,289 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-14 15:37:42,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:42,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288951134] [2021-12-14 15:37:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:42,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:42,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:42,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:42,422 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 15:37:42,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:42,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288951134] [2021-12-14 15:37:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288951134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:42,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:42,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:42,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758913067] [2021-12-14 15:37:42,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:42,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:42,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:42,424 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:44,036 INFO L93 Difference]: Finished difference Result 3912 states and 6843 transitions. [2021-12-14 15:37:44,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:37:44,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:44,047 INFO L225 Difference]: With dead ends: 3912 [2021-12-14 15:37:44,047 INFO L226 Difference]: Without dead ends: 3179 [2021-12-14 15:37:44,050 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 15:37:44,051 INFO L933 BasicCegarLoop]: 4608 mSDtfsCounter, 5073 mSDsluCounter, 16762 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21370 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:44,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21370 Invalid, 1597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:37:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3179 states. [2021-12-14 15:37:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3179 to 2874. [2021-12-14 15:37:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7969416785206258) internal successors, (5053), 2815 states have internal predecessors, (5053), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-14 15:37:44,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5150 transitions. [2021-12-14 15:37:44,118 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5150 transitions. Word has length 178 [2021-12-14 15:37:44,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:44,119 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5150 transitions. [2021-12-14 15:37:44,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:44,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5150 transitions. [2021-12-14 15:37:44,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:44,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:44,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:44,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:37:44,125 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:44,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-14 15:37:44,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:44,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183294380] [2021-12-14 15:37:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:44,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:44,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:44,261 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 15:37:44,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:44,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183294380] [2021-12-14 15:37:44,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183294380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:44,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:44,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:44,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978188786] [2021-12-14 15:37:44,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:44,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:44,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:44,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:44,264 INFO L87 Difference]: Start difference. First operand 2874 states and 5150 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:47,212 INFO L93 Difference]: Finished difference Result 4423 states and 7658 transitions. [2021-12-14 15:37:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:37:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:47,227 INFO L225 Difference]: With dead ends: 4423 [2021-12-14 15:37:47,228 INFO L226 Difference]: Without dead ends: 3690 [2021-12-14 15:37:47,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:37:47,234 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 5634 mSDsluCounter, 17170 mSDsCounter, 0 mSdLazyCounter, 2729 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5653 SdHoareTripleChecker+Valid, 21898 SdHoareTripleChecker+Invalid, 2836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:47,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5653 Valid, 21898 Invalid, 2836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 2729 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 15:37:47,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2021-12-14 15:37:47,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3223. [2021-12-14 15:37:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7727417810405361) internal successors, (5554), 3137 states have internal predecessors, (5554), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-14 15:37:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5695 transitions. [2021-12-14 15:37:47,343 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5695 transitions. Word has length 178 [2021-12-14 15:37:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:47,344 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5695 transitions. [2021-12-14 15:37:47,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5695 transitions. [2021-12-14 15:37:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:47,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:47,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:47,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:37:47,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-14 15:37:47,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:47,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649625615] [2021-12-14 15:37:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:47,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:47,479 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 15:37:47,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:47,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649625615] [2021-12-14 15:37:47,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649625615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:47,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:47,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:47,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681778256] [2021-12-14 15:37:47,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:47,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:47,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:47,482 INFO L87 Difference]: Start difference. First operand 3223 states and 5695 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:50,631 INFO L93 Difference]: Finished difference Result 5766 states and 9803 transitions. [2021-12-14 15:37:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:37:50,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:50,650 INFO L225 Difference]: With dead ends: 5766 [2021-12-14 15:37:50,650 INFO L226 Difference]: Without dead ends: 4684 [2021-12-14 15:37:50,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:37:50,659 INFO L933 BasicCegarLoop]: 4950 mSDtfsCounter, 5535 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5554 SdHoareTripleChecker+Valid, 22714 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:50,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5554 Valid, 22714 Invalid, 3124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 15:37:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2021-12-14 15:37:50,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 3923. [2021-12-14 15:37:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.736563410113847) internal successors, (6559), 3783 states have internal predecessors, (6559), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:37:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6792 transitions. [2021-12-14 15:37:50,813 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6792 transitions. Word has length 178 [2021-12-14 15:37:50,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:50,813 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6792 transitions. [2021-12-14 15:37:50,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6792 transitions. [2021-12-14 15:37:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:50,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:50,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:50,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:37:50,817 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:50,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-14 15:37:50,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:50,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355063964] [2021-12-14 15:37:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:50,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:50,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:50,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:50,950 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 15:37:50,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:50,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355063964] [2021-12-14 15:37:50,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355063964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:50,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:50,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:50,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196992199] [2021-12-14 15:37:50,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:50,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:50,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:50,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:50,953 INFO L87 Difference]: Start difference. First operand 3923 states and 6792 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:52,302 INFO L93 Difference]: Finished difference Result 6452 states and 10885 transitions. [2021-12-14 15:37:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:37:52,302 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:52,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:52,315 INFO L225 Difference]: With dead ends: 6452 [2021-12-14 15:37:52,315 INFO L226 Difference]: Without dead ends: 4670 [2021-12-14 15:37:52,319 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 15:37:52,320 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5240 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5260 SdHoareTripleChecker+Valid, 17203 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:52,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5260 Valid, 17203 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:37:52,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4670 states. [2021-12-14 15:37:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4670 to 3923. [2021-12-14 15:37:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.73523960815462) internal successors, (6554), 3783 states have internal predecessors, (6554), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:37:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6787 transitions. [2021-12-14 15:37:52,424 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6787 transitions. Word has length 178 [2021-12-14 15:37:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:52,425 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6787 transitions. [2021-12-14 15:37:52,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6787 transitions. [2021-12-14 15:37:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:52,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:52,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:52,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:37:52,427 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:52,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:52,428 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-14 15:37:52,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:52,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387225367] [2021-12-14 15:37:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:52,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:52,549 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 15:37:52,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:52,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387225367] [2021-12-14 15:37:52,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387225367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:52,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:52,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:52,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994920316] [2021-12-14 15:37:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:52,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:52,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:52,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:52,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:52,551 INFO L87 Difference]: Start difference. First operand 3923 states and 6787 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:54,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:54,120 INFO L93 Difference]: Finished difference Result 6446 states and 10858 transitions. [2021-12-14 15:37:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:37:54,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:54,133 INFO L225 Difference]: With dead ends: 6446 [2021-12-14 15:37:54,147 INFO L226 Difference]: Without dead ends: 4664 [2021-12-14 15:37:54,153 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 15:37:54,154 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5072 mSDsluCounter, 16761 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 21350 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:54,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5092 Valid, 21350 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:37:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4664 states. [2021-12-14 15:37:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4664 to 3923. [2021-12-14 15:37:54,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7339158061953932) internal successors, (6549), 3783 states have internal predecessors, (6549), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:37:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6782 transitions. [2021-12-14 15:37:54,269 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6782 transitions. Word has length 178 [2021-12-14 15:37:54,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:54,269 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6782 transitions. [2021-12-14 15:37:54,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:54,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6782 transitions. [2021-12-14 15:37:54,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:54,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:54,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:54,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:37:54,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:54,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-14 15:37:54,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:54,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971960007] [2021-12-14 15:37:54,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:54,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:54,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:54,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:54,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:54,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:54,401 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 15:37:54,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:54,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971960007] [2021-12-14 15:37:54,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971960007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:54,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:54,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:54,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258261769] [2021-12-14 15:37:54,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:54,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:54,404 INFO L87 Difference]: Start difference. First operand 3923 states and 6782 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:55,774 INFO L93 Difference]: Finished difference Result 6440 states and 10831 transitions. [2021-12-14 15:37:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:37:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:55,785 INFO L225 Difference]: With dead ends: 6440 [2021-12-14 15:37:55,785 INFO L226 Difference]: Without dead ends: 4658 [2021-12-14 15:37:55,791 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 15:37:55,792 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 5236 mSDsluCounter, 12610 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:55,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5256 Valid, 17195 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:37:55,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2021-12-14 15:37:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 3923. [2021-12-14 15:37:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3777 states have (on average 1.7325920042361662) internal successors, (6544), 3783 states have internal predecessors, (6544), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-14 15:37:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6777 transitions. [2021-12-14 15:37:55,909 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6777 transitions. Word has length 178 [2021-12-14 15:37:55,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:55,909 INFO L470 AbstractCegarLoop]: Abstraction has 3923 states and 6777 transitions. [2021-12-14 15:37:55,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6777 transitions. [2021-12-14 15:37:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:55,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:55,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:55,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:37:55,912 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-14 15:37:55,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:55,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359486717] [2021-12-14 15:37:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:55,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:56,049 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 15:37:56,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:56,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359486717] [2021-12-14 15:37:56,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359486717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:56,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:56,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:56,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095946411] [2021-12-14 15:37:56,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:56,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:56,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:56,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:56,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:56,051 INFO L87 Difference]: Start difference. First operand 3923 states and 6777 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:58,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:37:58,977 INFO L93 Difference]: Finished difference Result 8330 states and 13794 transitions. [2021-12-14 15:37:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:37:58,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:37:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:37:58,991 INFO L225 Difference]: With dead ends: 8330 [2021-12-14 15:37:58,991 INFO L226 Difference]: Without dead ends: 6548 [2021-12-14 15:37:58,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:37:58,996 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22686 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:37:58,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22686 Invalid, 3049 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:37:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6548 states. [2021-12-14 15:37:59,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6548 to 5345. [2021-12-14 15:37:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 5087 states have (on average 1.6850796147041478) internal successors, (8572), 5097 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-14 15:37:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 8995 transitions. [2021-12-14 15:37:59,172 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 8995 transitions. Word has length 178 [2021-12-14 15:37:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:37:59,172 INFO L470 AbstractCegarLoop]: Abstraction has 5345 states and 8995 transitions. [2021-12-14 15:37:59,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:37:59,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 8995 transitions. [2021-12-14 15:37:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:37:59,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:37:59,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:59,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:37:59,176 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:37:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:37:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-14 15:37:59,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:37:59,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223313975] [2021-12-14 15:37:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:37:59,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:37:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:37:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:37:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:37:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:37:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:59,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:37:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:37:59,292 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 15:37:59,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:37:59,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223313975] [2021-12-14 15:37:59,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223313975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:37:59,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:37:59,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:37:59,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138899986] [2021-12-14 15:37:59,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:37:59,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:37:59,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:37:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:37:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:37:59,295 INFO L87 Difference]: Start difference. First operand 5345 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:38:02,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:02,464 INFO L93 Difference]: Finished difference Result 13508 states and 21962 transitions. [2021-12-14 15:38:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:02,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:38:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:02,489 INFO L225 Difference]: With dead ends: 13508 [2021-12-14 15:38:02,490 INFO L226 Difference]: Without dead ends: 10304 [2021-12-14 15:38:02,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:02,500 INFO L933 BasicCegarLoop]: 4917 mSDtfsCounter, 5503 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 22681 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:02,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5522 Valid, 22681 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:38:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10304 states. [2021-12-14 15:38:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10304 to 8188. [2021-12-14 15:38:02,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 7706 states have (on average 1.6379444588632235) internal successors, (12622), 7724 states have internal predecessors, (12622), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-14 15:38:02,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 13443 transitions. [2021-12-14 15:38:02,832 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 13443 transitions. Word has length 178 [2021-12-14 15:38:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:02,833 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 13443 transitions. [2021-12-14 15:38:02,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:38:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 13443 transitions. [2021-12-14 15:38:02,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:38:02,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:02,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:02,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:38:02,837 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:02,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:02,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2021-12-14 15:38:02,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:02,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698401920] [2021-12-14 15:38:02,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:02,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:38:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:38:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:38:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:38:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:02,964 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 15:38:02,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:02,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698401920] [2021-12-14 15:38:02,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698401920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:02,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:02,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:02,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804231734] [2021-12-14 15:38:02,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:02,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:02,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:02,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:02,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:02,966 INFO L87 Difference]: Start difference. First operand 8188 states and 13443 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:38:06,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:06,410 INFO L93 Difference]: Finished difference Result 23857 states and 38344 transitions. [2021-12-14 15:38:06,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:06,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:38:06,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:06,525 INFO L225 Difference]: With dead ends: 23857 [2021-12-14 15:38:06,525 INFO L226 Difference]: Without dead ends: 17810 [2021-12-14 15:38:06,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:06,541 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 5599 mSDsluCounter, 17123 mSDsCounter, 0 mSdLazyCounter, 2639 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5618 SdHoareTripleChecker+Valid, 21802 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:06,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5618 Valid, 21802 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2639 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:38:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17810 states. [2021-12-14 15:38:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17810 to 13889. [2021-12-14 15:38:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13889 states, 12959 states have (on average 1.6007407979010726) internal successors, (20744), 12993 states have internal predecessors, (20744), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-14 15:38:07,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13889 states to 13889 states and 22415 transitions. [2021-12-14 15:38:07,208 INFO L78 Accepts]: Start accepts. Automaton has 13889 states and 22415 transitions. Word has length 178 [2021-12-14 15:38:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:07,208 INFO L470 AbstractCegarLoop]: Abstraction has 13889 states and 22415 transitions. [2021-12-14 15:38:07,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:38:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13889 states and 22415 transitions. [2021-12-14 15:38:07,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:38:07,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:07,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:07,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:38:07,216 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:07,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:07,216 INFO L85 PathProgramCache]: Analyzing trace with hash -778448125, now seen corresponding path program 1 times [2021-12-14 15:38:07,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:07,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352761305] [2021-12-14 15:38:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:07,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:38:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:38:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:07,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:38:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:38:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:07,320 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 15:38:07,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:07,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352761305] [2021-12-14 15:38:07,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352761305] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:07,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:07,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:07,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870622429] [2021-12-14 15:38:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:07,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:07,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:07,322 INFO L87 Difference]: Start difference. First operand 13889 states and 22415 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:38:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:11,787 INFO L93 Difference]: Finished difference Result 44556 states and 71302 transitions. [2021-12-14 15:38:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:11,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:38:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:11,870 INFO L225 Difference]: With dead ends: 44556 [2021-12-14 15:38:11,870 INFO L226 Difference]: Without dead ends: 32808 [2021-12-14 15:38:11,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:11,916 INFO L933 BasicCegarLoop]: 4905 mSDtfsCounter, 5504 mSDsluCounter, 17764 mSDsCounter, 0 mSdLazyCounter, 2937 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5523 SdHoareTripleChecker+Valid, 22669 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:11,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5523 Valid, 22669 Invalid, 3025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 2937 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 15:38:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2021-12-14 15:38:13,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 25322. [2021-12-14 15:38:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25322 states, 23496 states have (on average 1.5761831801157644) internal successors, (37034), 23562 states have internal predecessors, (37034), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-14 15:38:13,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25322 states to 25322 states and 40567 transitions. [2021-12-14 15:38:13,320 INFO L78 Accepts]: Start accepts. Automaton has 25322 states and 40567 transitions. Word has length 178 [2021-12-14 15:38:13,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:13,321 INFO L470 AbstractCegarLoop]: Abstraction has 25322 states and 40567 transitions. [2021-12-14 15:38:13,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:38:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 25322 states and 40567 transitions. [2021-12-14 15:38:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-14 15:38:13,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:13,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:13,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:38:13,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash -440160575, now seen corresponding path program 1 times [2021-12-14 15:38:13,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:13,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259342437] [2021-12-14 15:38:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:13,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 15:38:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 15:38:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-14 15:38:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-14 15:38:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:13,441 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 15:38:13,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:13,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259342437] [2021-12-14 15:38:13,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259342437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:13,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:13,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:13,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625122742] [2021-12-14 15:38:13,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:13,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:13,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:13,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:13,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:13,442 INFO L87 Difference]: Start difference. First operand 25322 states and 40567 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 15:38:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:21,810 INFO L93 Difference]: Finished difference Result 97217 states and 155098 transitions. [2021-12-14 15:38:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:21,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-14 15:38:21,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:22,028 INFO L225 Difference]: With dead ends: 97217 [2021-12-14 15:38:22,028 INFO L226 Difference]: Without dead ends: 74036 [2021-12-14 15:38:22,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:22,083 INFO L933 BasicCegarLoop]: 4894 mSDtfsCounter, 5985 mSDsluCounter, 17756 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6017 SdHoareTripleChecker+Valid, 22650 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:22,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6017 Valid, 22650 Invalid, 3005 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-14 15:38:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74036 states.