./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_label42+token_ring.05.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 241a591afac9616f6eb2efaff376ca7c5ab81b92f8f29d73e0797caec39fd2c8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:11:06,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:11:06,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:11:06,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:11:06,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:11:06,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:11:06,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:11:06,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:11:06,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:11:06,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:11:06,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:11:06,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:11:06,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:11:06,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:11:06,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:11:06,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:11:06,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:11:06,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:11:06,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:11:06,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:11:06,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:11:06,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:11:06,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:11:06,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:11:06,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:11:06,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:11:06,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:11:06,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:11:06,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:11:06,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:11:06,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:11:06,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:11:06,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:11:06,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:11:06,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:11:06,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:11:06,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:11:06,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:11:06,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:11:06,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:11:06,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:11:06,676 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:11:06,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:11:06,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:11:06,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:11:06,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:11:06,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:11:06,715 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:11:06,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:11:06,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:11:06,716 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:11:06,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:11:06,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:11:06,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:11:06,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:11:06,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:11:06,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:11:06,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:11:06,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:11:06,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:11:06,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:11:06,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:11:06,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:11:06,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:11:06,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:11:06,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:11:06,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:11:06,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:11:06,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:11:06,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:11:06,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:11:06,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:11:06,721 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:11:06,722 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:11:06,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:11:06,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:11:06,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 241a591afac9616f6eb2efaff376ca7c5ab81b92f8f29d73e0797caec39fd2c8 [2021-12-21 14:11:06,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:11:07,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:11:07,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:11:07,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:11:07,027 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:11:07,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-1.c [2021-12-21 14:11:07,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b9ab0c0/5949a7f44a924415b0d8f59e6b883b28/FLAGd016c0466 [2021-12-21 14:11:07,879 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:11:07,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.05.cil-1.c [2021-12-21 14:11:07,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b9ab0c0/5949a7f44a924415b0d8f59e6b883b28/FLAGd016c0466 [2021-12-21 14:11:08,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b9ab0c0/5949a7f44a924415b0d8f59e6b883b28 [2021-12-21 14:11:08,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:11:08,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:11:08,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:11:08,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:11:08,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:11:08,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:11:08" (1/1) ... [2021-12-21 14:11:08,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260c0d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:08, skipping insertion in model container [2021-12-21 14:11:08,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:11:08" (1/1) ... [2021-12-21 14:11:08,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:11:08,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:11:10,433 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_label42+token_ring.05.cil-1.c[378560,378573] [2021-12-21 14:11:10,458 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_label42+token_ring.05.cil-1.c[383339,383352] [2021-12-21 14:11:10,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:11:10,633 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:11:11,423 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_label42+token_ring.05.cil-1.c[378560,378573] [2021-12-21 14:11:11,429 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_label42+token_ring.05.cil-1.c[383339,383352] [2021-12-21 14:11:11,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:11:11,497 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:11:11,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11 WrapperNode [2021-12-21 14:11:11,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:11:11,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:11:11,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:11:11,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:11:11,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:11,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:11,955 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2021-12-21 14:11:11,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:11:11,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:11:11,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:11:11,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:11:11,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:11,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:12,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:12,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:12,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:12,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:12,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:12,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:11:12,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:11:12,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:11:12,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:11:12,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (1/1) ... [2021-12-21 14:11:12,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:11:12,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:11:12,757 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) [2021-12-21 14:11:12,798 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 [2021-12-21 14:11:12,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:11:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:11:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:11:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:11:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:11:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:11:12,815 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:11:12,815 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:11:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:11:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:11:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:11:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:11:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:11:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:11:12,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:11:12,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:11:12,957 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:11:12,959 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:11:19,588 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:11:19,621 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:11:19,622 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-21 14:11:19,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:11:19 BoogieIcfgContainer [2021-12-21 14:11:19,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:11:19,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:11:19,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:11:19,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:11:19,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:11:08" (1/3) ... [2021-12-21 14:11:19,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeff0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:11:19, skipping insertion in model container [2021-12-21 14:11:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:11" (2/3) ... [2021-12-21 14:11:19,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeff0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:11:19, skipping insertion in model container [2021-12-21 14:11:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:11:19" (3/3) ... [2021-12-21 14:11:19,635 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.05.cil-1.c [2021-12-21 14:11:19,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:11:19,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:11:19,696 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:11:19,704 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 [2021-12-21 14:11:19,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:11:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-21 14:11:19,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:19,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:19,780 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] [2021-12-21 14:11:19,780 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:19,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2021-12-21 14:11:19,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:19,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601330270] [2021-12-21 14:11:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:19,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:20,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:20,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:20,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601330270] [2021-12-21 14:11:20,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601330270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:20,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:20,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:11:20,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469562256] [2021-12-21 14:11:20,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:20,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:11:20,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:11:20,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:11:20,263 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-12-21 14:11:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:21,133 INFO L93 Difference]: Finished difference Result 4837 states and 8925 transitions. [2021-12-21 14:11:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:11:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:21,162 INFO L225 Difference]: With dead ends: 4837 [2021-12-21 14:11:21,162 INFO L226 Difference]: Without dead ends: 2388 [2021-12-21 14:11:21,172 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 [2021-12-21 14:11:21,175 INFO L933 BasicCegarLoop]: 4361 mSDtfsCounter, 507 mSDsluCounter, 12296 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 16657 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:21,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 16657 Invalid, 385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 14:11:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-12-21 14:11:21,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2323. [2021-12-21 14:11:21,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-21 14:11:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2021-12-21 14:11:21,322 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2021-12-21 14:11:21,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:21,322 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2021-12-21 14:11:21,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-12-21 14:11:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2021-12-21 14:11:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:21,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:21,334 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] [2021-12-21 14:11:21,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:11:21,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2021-12-21 14:11:21,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:21,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210314464] [2021-12-21 14:11:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:21,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:21,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:21,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:21,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:21,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210314464] [2021-12-21 14:11:21,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210314464] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:21,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:21,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:11:21,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492648568] [2021-12-21 14:11:21,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:21,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:11:21,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:11:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:11:21,544 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-21 14:11:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:22,917 INFO L93 Difference]: Finished difference Result 2835 states and 5072 transitions. [2021-12-21 14:11:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:11:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:22,929 INFO L225 Difference]: With dead ends: 2835 [2021-12-21 14:11:22,930 INFO L226 Difference]: Without dead ends: 2646 [2021-12-21 14:11:22,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:11:22,932 INFO L933 BasicCegarLoop]: 4316 mSDtfsCounter, 4705 mSDsluCounter, 12418 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 16734 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:22,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 16734 Invalid, 1040 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:11:22,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-12-21 14:11:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2517. [2021-12-21 14:11:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-21 14:11:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4565 transitions. [2021-12-21 14:11:22,998 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4565 transitions. Word has length 101 [2021-12-21 14:11:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:22,998 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4565 transitions. [2021-12-21 14:11:22,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-21 14:11:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4565 transitions. [2021-12-21 14:11:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:23,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:23,001 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] [2021-12-21 14:11:23,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:11:23,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2021-12-21 14:11:23,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:23,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553618392] [2021-12-21 14:11:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:23,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:23,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:23,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:23,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553618392] [2021-12-21 14:11:23,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553618392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:23,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:23,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:23,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977656952] [2021-12-21 14:11:23,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:23,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:23,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:23,170 INFO L87 Difference]: Start difference. First operand 2517 states and 4565 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:24,792 INFO L93 Difference]: Finished difference Result 3293 states and 5783 transitions. [2021-12-21 14:11:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:24,806 INFO L225 Difference]: With dead ends: 3293 [2021-12-21 14:11:24,806 INFO L226 Difference]: Without dead ends: 2910 [2021-12-21 14:11:24,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:24,810 INFO L933 BasicCegarLoop]: 4461 mSDtfsCounter, 4711 mSDsluCounter, 16854 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 21315 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:24,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 21315 Invalid, 1558 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:11:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2021-12-21 14:11:24,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2698. [2021-12-21 14:11:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2629 states have (on average 1.8025865348041081) internal successors, (4739), 2633 states have internal predecessors, (4739), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-21 14:11:24,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4838 transitions. [2021-12-21 14:11:24,890 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4838 transitions. Word has length 101 [2021-12-21 14:11:24,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:24,891 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 4838 transitions. [2021-12-21 14:11:24,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4838 transitions. [2021-12-21 14:11:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:24,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:24,893 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] [2021-12-21 14:11:24,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:11:24,894 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1689070587, now seen corresponding path program 1 times [2021-12-21 14:11:24,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:24,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952674941] [2021-12-21 14:11:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:24,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:24,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:25,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:25,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952674941] [2021-12-21 14:11:25,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952674941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:25,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:25,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:25,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634020345] [2021-12-21 14:11:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:25,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:25,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:25,035 INFO L87 Difference]: Start difference. First operand 2698 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:26,718 INFO L93 Difference]: Finished difference Result 3966 states and 6824 transitions. [2021-12-21 14:11:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:26,732 INFO L225 Difference]: With dead ends: 3966 [2021-12-21 14:11:26,732 INFO L226 Difference]: Without dead ends: 3402 [2021-12-21 14:11:26,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:26,747 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 4705 mSDsluCounter, 16850 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 21299 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:26,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 21299 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:11:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2021-12-21 14:11:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3064. [2021-12-21 14:11:26,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2953 states have (on average 1.771757534710464) internal successors, (5232), 2959 states have internal predecessors, (5232), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-12-21 14:11:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5395 transitions. [2021-12-21 14:11:26,867 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5395 transitions. Word has length 101 [2021-12-21 14:11:26,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:26,867 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 5395 transitions. [2021-12-21 14:11:26,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5395 transitions. [2021-12-21 14:11:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:26,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:26,870 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] [2021-12-21 14:11:26,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:11:26,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:26,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1039138759, now seen corresponding path program 1 times [2021-12-21 14:11:26,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:26,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339735213] [2021-12-21 14:11:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:26,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:26,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:27,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:27,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:27,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339735213] [2021-12-21 14:11:27,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339735213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:27,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:27,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:27,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905825096] [2021-12-21 14:11:27,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:27,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:27,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:27,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:27,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:27,021 INFO L87 Difference]: Start difference. First operand 3064 states and 5395 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:28,498 INFO L93 Difference]: Finished difference Result 5270 states and 8833 transitions. [2021-12-21 14:11:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:28,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:28,520 INFO L225 Difference]: With dead ends: 5270 [2021-12-21 14:11:28,521 INFO L226 Difference]: Without dead ends: 4340 [2021-12-21 14:11:28,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:28,528 INFO L933 BasicCegarLoop]: 4444 mSDtfsCounter, 4704 mSDsluCounter, 16850 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 21294 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:28,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4716 Valid, 21294 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:11:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2021-12-21 14:11:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3797. [2021-12-21 14:11:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3602 states have (on average 1.7262631871182677) internal successors, (6218), 3612 states have internal predecessors, (6218), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2021-12-21 14:11:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6515 transitions. [2021-12-21 14:11:28,681 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6515 transitions. Word has length 101 [2021-12-21 14:11:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:28,681 INFO L470 AbstractCegarLoop]: Abstraction has 3797 states and 6515 transitions. [2021-12-21 14:11:28,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6515 transitions. [2021-12-21 14:11:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:28,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:28,685 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] [2021-12-21 14:11:28,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:11:28,685 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:28,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:28,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2096976837, now seen corresponding path program 1 times [2021-12-21 14:11:28,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:28,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051016048] [2021-12-21 14:11:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:28,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:28,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:28,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:28,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051016048] [2021-12-21 14:11:28,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051016048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:28,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:28,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:28,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557279466] [2021-12-21 14:11:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:28,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:28,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:28,803 INFO L87 Difference]: Start difference. First operand 3797 states and 6515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:30,375 INFO L93 Difference]: Finished difference Result 7877 states and 12867 transitions. [2021-12-21 14:11:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:30,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:30,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:30,407 INFO L225 Difference]: With dead ends: 7877 [2021-12-21 14:11:30,408 INFO L226 Difference]: Without dead ends: 6214 [2021-12-21 14:11:30,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:30,417 INFO L933 BasicCegarLoop]: 4439 mSDtfsCounter, 4703 mSDsluCounter, 16850 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 21289 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:30,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4715 Valid, 21289 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:11:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-12-21 14:11:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5270. [2021-12-21 14:11:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4907 states have (on average 1.6710821275728551) internal successors, (8200), 4925 states have internal predecessors, (8200), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2021-12-21 14:11:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8783 transitions. [2021-12-21 14:11:30,642 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8783 transitions. Word has length 101 [2021-12-21 14:11:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:30,643 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 8783 transitions. [2021-12-21 14:11:30,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8783 transitions. [2021-12-21 14:11:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:30,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:30,648 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] [2021-12-21 14:11:30,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:11:30,648 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:30,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1055487993, now seen corresponding path program 1 times [2021-12-21 14:11:30,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:30,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532548180] [2021-12-21 14:11:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:30,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:30,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:30,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:30,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:30,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:30,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:30,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532548180] [2021-12-21 14:11:30,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532548180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:30,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:30,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:30,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066303438] [2021-12-21 14:11:30,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:30,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:30,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:30,772 INFO L87 Difference]: Start difference. First operand 5270 states and 8783 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:33,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:33,208 INFO L93 Difference]: Finished difference Result 14356 states and 22887 transitions. [2021-12-21 14:11:33,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:11:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:33,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:33,291 INFO L225 Difference]: With dead ends: 14356 [2021-12-21 14:11:33,292 INFO L226 Difference]: Without dead ends: 11220 [2021-12-21 14:11:33,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:11:33,307 INFO L933 BasicCegarLoop]: 4319 mSDtfsCounter, 4963 mSDsluCounter, 16527 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 20846 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:33,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4981 Valid, 20846 Invalid, 1398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 14:11:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-12-21 14:11:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 8183. [2021-12-21 14:11:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7500 states have (on average 1.6205333333333334) internal successors, (12154), 7534 states have internal predecessors, (12154), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2021-12-21 14:11:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 13331 transitions. [2021-12-21 14:11:33,821 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 13331 transitions. Word has length 101 [2021-12-21 14:11:33,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:33,821 INFO L470 AbstractCegarLoop]: Abstraction has 8183 states and 13331 transitions. [2021-12-21 14:11:33,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:33,822 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 13331 transitions. [2021-12-21 14:11:33,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:33,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:33,829 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] [2021-12-21 14:11:33,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:11:33,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:33,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1295727739, now seen corresponding path program 1 times [2021-12-21 14:11:33,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:33,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103146842] [2021-12-21 14:11:33,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:33,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:33,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:33,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:33,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:33,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103146842] [2021-12-21 14:11:33,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103146842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:33,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:33,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:33,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008647507] [2021-12-21 14:11:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:33,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:33,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:33,938 INFO L87 Difference]: Start difference. First operand 8183 states and 13331 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:36,856 INFO L93 Difference]: Finished difference Result 25523 states and 40429 transitions. [2021-12-21 14:11:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:11:36,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:36,980 INFO L225 Difference]: With dead ends: 25523 [2021-12-21 14:11:36,980 INFO L226 Difference]: Without dead ends: 19474 [2021-12-21 14:11:37,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:11:37,009 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 4743 mSDsluCounter, 16839 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21341 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:37,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4754 Valid, 21341 Invalid, 1749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 14:11:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19474 states. [2021-12-21 14:11:37,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19474 to 13832. [2021-12-21 14:11:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 12525 states have (on average 1.582435129740519) internal successors, (19820), 12591 states have internal predecessors, (19820), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2021-12-21 14:11:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 22315 transitions. [2021-12-21 14:11:37,651 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 22315 transitions. Word has length 101 [2021-12-21 14:11:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:37,651 INFO L470 AbstractCegarLoop]: Abstraction has 13832 states and 22315 transitions. [2021-12-21 14:11:37,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:37,652 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 22315 transitions. [2021-12-21 14:11:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:37,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:37,662 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] [2021-12-21 14:11:37,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:11:37,662 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:37,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2134761401, now seen corresponding path program 1 times [2021-12-21 14:11:37,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:37,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780046028] [2021-12-21 14:11:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:37,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:37,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:37,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780046028] [2021-12-21 14:11:37,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780046028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:37,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:37,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:37,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692514713] [2021-12-21 14:11:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:37,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:37,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:37,763 INFO L87 Difference]: Start difference. First operand 13832 states and 22315 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:40,944 INFO L93 Difference]: Finished difference Result 46786 states and 74419 transitions. [2021-12-21 14:11:40,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:11:40,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:41,085 INFO L225 Difference]: With dead ends: 46786 [2021-12-21 14:11:41,085 INFO L226 Difference]: Without dead ends: 35088 [2021-12-21 14:11:41,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:11:41,147 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 4835 mSDsluCounter, 16842 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 21264 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:41,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4853 Valid, 21264 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:11:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2021-12-21 14:11:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 25257. [2021-12-21 14:11:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25257 states, 22734 states have (on average 1.5588105920647488) internal successors, (35438), 22864 states have internal predecessors, (35438), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2021-12-21 14:11:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25257 states to 25257 states and 40991 transitions. [2021-12-21 14:11:43,023 INFO L78 Accepts]: Start accepts. Automaton has 25257 states and 40991 transitions. Word has length 101 [2021-12-21 14:11:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:43,023 INFO L470 AbstractCegarLoop]: Abstraction has 25257 states and 40991 transitions. [2021-12-21 14:11:43,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 25257 states and 40991 transitions. [2021-12-21 14:11:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:43,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:43,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:43,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:11:43,045 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2133140293, now seen corresponding path program 1 times [2021-12-21 14:11:43,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:43,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012429362] [2021-12-21 14:11:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:43,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:43,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:43,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012429362] [2021-12-21 14:11:43,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012429362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:43,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:43,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:43,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898912224] [2021-12-21 14:11:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:43,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:43,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:43,151 INFO L87 Difference]: Start difference. First operand 25257 states and 40991 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:48,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:48,136 INFO L93 Difference]: Finished difference Result 88545 states and 143161 transitions. [2021-12-21 14:11:48,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:11:48,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:48,563 INFO L225 Difference]: With dead ends: 88545 [2021-12-21 14:11:48,564 INFO L226 Difference]: Without dead ends: 65422 [2021-12-21 14:11:48,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:11:48,643 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 4798 mSDsluCounter, 16842 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:48,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4816 Valid, 21257 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:11:48,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65422 states. [2021-12-21 14:11:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65422 to 48042. [2021-12-21 14:11:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5465690250515631) internal successors, (66736), 43409 states have internal predecessors, (66736), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-21 14:11:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79735 transitions. [2021-12-21 14:11:52,329 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79735 transitions. Word has length 101 [2021-12-21 14:11:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:52,330 INFO L470 AbstractCegarLoop]: Abstraction has 48042 states and 79735 transitions. [2021-12-21 14:11:52,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79735 transitions. [2021-12-21 14:11:52,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:11:52,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:52,532 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] [2021-12-21 14:11:52,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:11:52,533 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:52,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:52,534 INFO L85 PathProgramCache]: Analyzing trace with hash 84490105, now seen corresponding path program 1 times [2021-12-21 14:11:52,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:52,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338320568] [2021-12-21 14:11:52,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:52,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:52,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:11:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:11:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:11:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:52,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:11:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:52,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:52,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338320568] [2021-12-21 14:11:52,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338320568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:52,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:52,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:52,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389934952] [2021-12-21 14:11:52,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:52,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:52,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:52,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:52,656 INFO L87 Difference]: Start difference. First operand 48042 states and 79735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:11:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:57,457 INFO L93 Difference]: Finished difference Result 105804 states and 179852 transitions. [2021-12-21 14:11:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:11:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-21 14:11:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:57,681 INFO L225 Difference]: With dead ends: 105804 [2021-12-21 14:11:57,681 INFO L226 Difference]: Without dead ends: 59896 [2021-12-21 14:11:57,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:11:57,786 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4508 mSDsluCounter, 16314 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20556 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:57,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4521 Valid, 20556 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 14:11:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2021-12-21 14:12:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 48042. [2021-12-21 14:12:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5406131955226994) internal successors, (66479), 43409 states have internal predecessors, (66479), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-21 14:12:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79478 transitions. [2021-12-21 14:12:01,046 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79478 transitions. Word has length 101 [2021-12-21 14:12:01,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:01,047 INFO L470 AbstractCegarLoop]: Abstraction has 48042 states and 79478 transitions. [2021-12-21 14:12:01,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-21 14:12:01,048 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79478 transitions. [2021-12-21 14:12:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 14:12:01,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:01,102 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] [2021-12-21 14:12:01,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:12:01,102 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash 971712951, now seen corresponding path program 1 times [2021-12-21 14:12:01,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:01,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579388390] [2021-12-21 14:12:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:01,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 14:12:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 14:12:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 14:12:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:12:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:12:01,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:01,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579388390] [2021-12-21 14:12:01,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579388390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:01,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:01,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:12:01,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938069099] [2021-12-21 14:12:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:01,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:12:01,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:12:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:12:01,198 INFO L87 Difference]: Start difference. First operand 48042 states and 79478 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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)