./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.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.09.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:11:27,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:11:27,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:11:27,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:11:27,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:11:27,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:11:27,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:11:27,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:11:27,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:11:27,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:11:27,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:11:27,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:11:27,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:11:27,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:11:27,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:11:27,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:11:27,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:11:27,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:11:27,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:11:27,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:11:27,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:11:27,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:11:27,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:11:27,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:11:27,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:11:27,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:11:27,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:11:27,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:11:27,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:11:27,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:11:27,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:11:27,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:11:27,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:11:27,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:11:27,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:11:27,547 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:11:27,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:11:27,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:11:27,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:11:27,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:11:27,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:11:27,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:11:27,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:11:27,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:11:27,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:11:27,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:11:27,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:11:27,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:11:27,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:11:27,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:11:27,579 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:11:27,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:11:27,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:11:27,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:11:27,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:11:27,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:11:27,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:11:27,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:11:27,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:11:27,581 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:11:27,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:11:27,581 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:11:27,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:11:27,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:11:27,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:11:27,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:11:27,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:11:27,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:11:27,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:11:27,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:11:27,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:11:27,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:11:27,583 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:11:27,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:11:27,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:11:27,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:11:27,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad [2021-12-21 14:11:27,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:11:27,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:11:27,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:11:27,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:11:27,837 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:11:27,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2021-12-21 14:11:27,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8511a2b/9d64e9c448144d90bbaea7a09fb86a92/FLAG84a3fa413 [2021-12-21 14:11:28,477 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:11:28,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2021-12-21 14:11:28,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8511a2b/9d64e9c448144d90bbaea7a09fb86a92/FLAG84a3fa413 [2021-12-21 14:11:28,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8511a2b/9d64e9c448144d90bbaea7a09fb86a92 [2021-12-21 14:11:28,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:11:28,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:11:28,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:11:28,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:11:28,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:11:28,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:11:28" (1/1) ... [2021-12-21 14:11:28,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770e7391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:28, skipping insertion in model container [2021-12-21 14:11:28,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:11:28" (1/1) ... [2021-12-21 14:11:28,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:11:28,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:11:30,204 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.09.cil-2.c[378560,378573] [2021-12-21 14:11:30,233 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.09.cil-2.c[383339,383352] [2021-12-21 14:11:30,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:11:30,425 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:11:30,981 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.09.cil-2.c[378560,378573] [2021-12-21 14:11:30,986 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.09.cil-2.c[383339,383352] [2021-12-21 14:11:31,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:11:31,052 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:11:31,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31 WrapperNode [2021-12-21 14:11:31,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:11:31,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:11:31,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:11:31,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:11:31,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,503 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2021-12-21 14:11:31,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:11:31,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:11:31,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:11:31,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:11:31,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:11:31,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:11:31,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:11:31,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:11:31,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (1/1) ... [2021-12-21 14:11:31,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:11:31,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:11:31,925 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 14:11:31,979 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 14:11:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:11:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:11:32,021 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:11:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:11:32,025 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:11:32,025 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:11:32,025 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:11:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-21 14:11:32,026 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-21 14:11:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:11:32,026 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:11:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:11:32,026 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:11:32,026 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:11:32,027 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:11:32,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:11:32,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:11:32,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:11:32,158 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:11:32,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:11:36,840 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:11:36,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:11:36,867 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-21 14:11:36,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:11:36 BoogieIcfgContainer [2021-12-21 14:11:36,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:11:36,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:11:36,874 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:11:36,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:11:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:11:28" (1/3) ... [2021-12-21 14:11:36,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9d5441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:11:36, skipping insertion in model container [2021-12-21 14:11:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:11:31" (2/3) ... [2021-12-21 14:11:36,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9d5441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:11:36, skipping insertion in model container [2021-12-21 14:11:36,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:11:36" (3/3) ... [2021-12-21 14:11:36,881 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.09.cil-2.c [2021-12-21 14:11:36,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:11:36,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:11:36,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:11:36,953 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 14:11:36,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:11:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-21 14:11:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:37,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:37,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:37,017 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:37,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-21 14:11:37,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:37,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669213931] [2021-12-21 14:11:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:37,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:37,361 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 14:11:37,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669213931] [2021-12-21 14:11:37,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669213931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:37,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:37,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:11:37,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314531313] [2021-12-21 14:11:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:37,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:11:37,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:11:37,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:11:37,395 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:38,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:38,411 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2021-12-21 14:11:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:11:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:38,440 INFO L225 Difference]: With dead ends: 5096 [2021-12-21 14:11:38,441 INFO L226 Difference]: Without dead ends: 2539 [2021-12-21 14:11:38,451 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 14:11:38,455 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12422 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:38,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 16979 Invalid, 605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 14:11:38,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-21 14:11:38,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2021-12-21 14:11:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-21 14:11:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2021-12-21 14:11:38,581 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2021-12-21 14:11:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:38,582 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2021-12-21 14:11:38,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2021-12-21 14:11:38,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:38,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:38,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:38,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:11:38,591 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:38,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2021-12-21 14:11:38,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:38,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180945314] [2021-12-21 14:11:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:38,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:38,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:38,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:38,817 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 14:11:38,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:38,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180945314] [2021-12-21 14:11:38,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180945314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:38,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:38,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:11:38,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764095660] [2021-12-21 14:11:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:38,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:11:38,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:11:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:11:38,825 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:40,758 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2021-12-21 14:11:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:11:40,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:40,773 INFO L225 Difference]: With dead ends: 3244 [2021-12-21 14:11:40,773 INFO L226 Difference]: Without dead ends: 2952 [2021-12-21 14:11:40,776 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 14:11:40,777 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12720 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17248 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:40,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 17248 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 14:11:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2021-12-21 14:11:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2021-12-21 14:11:40,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-21 14:11:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2021-12-21 14:11:40,844 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2021-12-21 14:11:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:40,845 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2021-12-21 14:11:40,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2021-12-21 14:11:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:40,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:40,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:40,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:11:40,847 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:40,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:40,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2021-12-21 14:11:40,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:40,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761012299] [2021-12-21 14:11:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:40,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:40,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:41,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:41,044 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 14:11:41,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:41,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761012299] [2021-12-21 14:11:41,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761012299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:41,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:41,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:41,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473429693] [2021-12-21 14:11:41,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:41,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:41,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:41,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:41,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:41,047 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:43,229 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2021-12-21 14:11:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:43,249 INFO L225 Difference]: With dead ends: 3972 [2021-12-21 14:11:43,249 INFO L226 Difference]: Without dead ends: 3377 [2021-12-21 14:11:43,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:43,258 INFO L933 BasicCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17461 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22234 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:43,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5217 Valid, 22234 Invalid, 2479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 14:11:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2021-12-21 14:11:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2021-12-21 14:11:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-21 14:11:43,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2021-12-21 14:11:43,363 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2021-12-21 14:11:43,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:43,363 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2021-12-21 14:11:43,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:43,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2021-12-21 14:11:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:43,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:43,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:43,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:11:43,366 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:43,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:43,367 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2021-12-21 14:11:43,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:43,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021444404] [2021-12-21 14:11:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:43,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:43,484 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 14:11:43,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:43,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021444404] [2021-12-21 14:11:43,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021444404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:43,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:43,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:43,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742060577] [2021-12-21 14:11:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:43,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:43,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:43,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:43,487 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:45,754 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2021-12-21 14:11:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:45,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:45,770 INFO L225 Difference]: With dead ends: 5044 [2021-12-21 14:11:45,772 INFO L226 Difference]: Without dead ends: 4167 [2021-12-21 14:11:45,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:45,781 INFO L933 BasicCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22218 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:45,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5211 Valid, 22218 Invalid, 2474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2394 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 14:11:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2021-12-21 14:11:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2021-12-21 14:11:45,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-21 14:11:45,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2021-12-21 14:11:45,900 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2021-12-21 14:11:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:45,905 INFO L470 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2021-12-21 14:11:45,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2021-12-21 14:11:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:45,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:45,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:45,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:11:45,912 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2021-12-21 14:11:45,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:45,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177952135] [2021-12-21 14:11:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:45,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:45,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:46,019 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 14:11:46,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:46,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177952135] [2021-12-21 14:11:46,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177952135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:46,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:46,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:46,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997322011] [2021-12-21 14:11:46,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:46,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:46,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:46,021 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:48,254 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2021-12-21 14:11:48,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:48,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:48,272 INFO L225 Difference]: With dead ends: 7114 [2021-12-21 14:11:48,273 INFO L226 Difference]: Without dead ends: 5669 [2021-12-21 14:11:48,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:48,278 INFO L933 BasicCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22213 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:48,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 22213 Invalid, 2466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 14:11:48,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-12-21 14:11:48,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2021-12-21 14:11:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-21 14:11:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2021-12-21 14:11:48,429 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2021-12-21 14:11:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:48,429 INFO L470 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2021-12-21 14:11:48,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:48,430 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2021-12-21 14:11:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:48,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:48,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:48,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:11:48,433 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2021-12-21 14:11:48,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:48,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891725419] [2021-12-21 14:11:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:48,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:48,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:48,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:48,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:11:48,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:48,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891725419] [2021-12-21 14:11:48,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891725419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:48,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:48,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:48,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379524230] [2021-12-21 14:11:48,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:48,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:48,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:48,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:48,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:48,563 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:50,870 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2021-12-21 14:11:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:50,914 INFO L225 Difference]: With dead ends: 11253 [2021-12-21 14:11:50,914 INFO L226 Difference]: Without dead ends: 8671 [2021-12-21 14:11:50,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:50,925 INFO L933 BasicCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22208 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:50,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5209 Valid, 22208 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 14:11:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2021-12-21 14:11:51,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2021-12-21 14:11:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-21 14:11:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2021-12-21 14:11:51,233 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2021-12-21 14:11:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:51,234 INFO L470 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2021-12-21 14:11:51,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:51,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2021-12-21 14:11:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:51,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:51,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:51,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:11:51,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2021-12-21 14:11:51,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:51,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885603759] [2021-12-21 14:11:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:51,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:51,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:51,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:51,355 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 14:11:51,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:51,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885603759] [2021-12-21 14:11:51,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885603759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:51,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:51,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:51,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185309906] [2021-12-21 14:11:51,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:51,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:51,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:51,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:51,357 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:53,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:53,788 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2021-12-21 14:11:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:53,828 INFO L225 Difference]: With dead ends: 19532 [2021-12-21 14:11:53,829 INFO L226 Difference]: Without dead ends: 14669 [2021-12-21 14:11:53,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:53,846 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16918 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21465 SdHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:53,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5288 Valid, 21465 Invalid, 2224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:11:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2021-12-21 14:11:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2021-12-21 14:11:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-21 14:11:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2021-12-21 14:11:54,325 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2021-12-21 14:11:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:54,325 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2021-12-21 14:11:54,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2021-12-21 14:11:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:54,331 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:54,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:54,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:11:54,331 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:54,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2021-12-21 14:11:54,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:54,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380302317] [2021-12-21 14:11:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:54,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:54,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:54,433 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 14:11:54,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:54,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380302317] [2021-12-21 14:11:54,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380302317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:54,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:54,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:54,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132467615] [2021-12-21 14:11:54,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:54,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:54,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:54,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:54,435 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:55,940 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2021-12-21 14:11:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:11:55,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:55,986 INFO L225 Difference]: With dead ends: 24276 [2021-12-21 14:11:55,987 INFO L226 Difference]: Without dead ends: 14836 [2021-12-21 14:11:56,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:11:56,014 INFO L933 BasicCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16944 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:56,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4996 Valid, 16944 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 14:11:56,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2021-12-21 14:11:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2021-12-21 14:11:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2021-12-21 14:11:56,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2021-12-21 14:11:56,512 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2021-12-21 14:11:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:11:56,513 INFO L470 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2021-12-21 14:11:56,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2021-12-21 14:11:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:11:56,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:11:56,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:11:56,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:11:56,521 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:11:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:11:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2021-12-21 14:11:56,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:11:56,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110834301] [2021-12-21 14:11:56,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:11:56,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:11:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:11:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:56,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:11:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:56,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:11:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:56,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:11:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:11:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:11:56,612 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 14:11:56,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:11:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110834301] [2021-12-21 14:11:56,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110834301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:11:56,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:11:56,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:11:56,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032571355] [2021-12-21 14:11:56,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:11:56,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:11:56,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:11:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:11:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:11:56,614 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:11:59,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:11:59,864 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2021-12-21 14:11:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:11:59,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:11:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:11:59,952 INFO L225 Difference]: With dead ends: 36057 [2021-12-21 14:11:59,952 INFO L226 Difference]: Without dead ends: 26617 [2021-12-21 14:11:59,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:11:59,982 INFO L933 BasicCegarLoop]: 4735 mSDtfsCounter, 5184 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5200 SdHoareTripleChecker+Valid, 22192 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:11:59,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5200 Valid, 22192 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 14:12:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2021-12-21 14:12:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2021-12-21 14:12:01,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2021-12-21 14:12:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2021-12-21 14:12:01,048 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2021-12-21 14:12:01,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:01,049 INFO L470 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2021-12-21 14:12:01,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:12:01,049 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2021-12-21 14:12:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:12:01,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:01,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:01,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:12:01,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2021-12-21 14:12:01,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:01,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972528235] [2021-12-21 14:12:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:01,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:12:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:12:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:12:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:12:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:01,148 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 14:12:01,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:01,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972528235] [2021-12-21 14:12:01,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972528235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:01,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:01,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:01,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559792357] [2021-12-21 14:12:01,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:01,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:01,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:01,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:01,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:01,151 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:12:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:05,672 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2021-12-21 14:12:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:12:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:05,849 INFO L225 Difference]: With dead ends: 69177 [2021-12-21 14:12:05,849 INFO L226 Difference]: Without dead ends: 50519 [2021-12-21 14:12:06,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:12:06,002 INFO L933 BasicCegarLoop]: 4728 mSDtfsCounter, 5186 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 22185 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:06,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5202 Valid, 22185 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:12:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2021-12-21 14:12:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2021-12-21 14:12:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2021-12-21 14:12:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2021-12-21 14:12:08,181 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2021-12-21 14:12:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:08,182 INFO L470 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2021-12-21 14:12:08,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:12:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2021-12-21 14:12:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:12:08,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:08,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:08,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:12:08,202 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:08,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2021-12-21 14:12:08,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:08,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058805218] [2021-12-21 14:12:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:08,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:08,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:08,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:12:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:12:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:12:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:12:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:08,309 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 14:12:08,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:08,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058805218] [2021-12-21 14:12:08,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058805218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:08,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:08,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:08,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074019480] [2021-12-21 14:12:08,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:08,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:08,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:08,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:08,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:08,312 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:12:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:18,923 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2021-12-21 14:12:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:12:18,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-21 14:12:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:19,303 INFO L225 Difference]: With dead ends: 151030 [2021-12-21 14:12:19,304 INFO L226 Difference]: Without dead ends: 113875 [2021-12-21 14:12:19,403 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 14:12:19,404 INFO L933 BasicCegarLoop]: 4856 mSDtfsCounter, 5263 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22302 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:19,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5278 Valid, 22302 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 14:12:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2021-12-21 14:12:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2021-12-21 14:12:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2021-12-21 14:12:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2021-12-21 14:12:24,415 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2021-12-21 14:12:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:24,416 INFO L470 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2021-12-21 14:12:24,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:12:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2021-12-21 14:12:24,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 14:12:24,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:24,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:12:24,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:12:24,447 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2021-12-21 14:12:24,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:24,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607854534] [2021-12-21 14:12:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:24,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 14:12:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 14:12:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 14:12:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 14:12:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:24,537 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 14:12:24,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:24,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607854534] [2021-12-21 14:12:24,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607854534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:24,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:24,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:24,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732702906] [2021-12-21 14:12:24,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:24,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:24,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:24,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:24,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:24,538 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)