./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:05:04,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:05:04,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:05:04,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:05:04,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:05:04,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:05:04,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:05:04,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:05:04,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:05:04,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:05:04,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:05:04,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:05:04,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:05:04,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:05:04,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:05:04,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:05:04,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:05:04,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:05:04,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:05:04,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:05:04,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:05:04,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:05:04,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:05:04,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:05:04,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:05:04,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:05:04,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:05:04,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:05:04,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:05:04,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:05:04,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:05:04,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:05:04,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:05:04,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:05:04,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:05:04,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:05:04,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:05:04,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:05:04,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:05:04,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:05:04,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:05:04,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 21:05:04,712 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:05:04,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:05:04,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:05:04,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:05:04,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:05:04,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:05:04,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:05:04,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:05:04,716 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:05:04,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:05:04,716 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:05:04,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 21:05:04,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:05:04,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:05:04,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:05:04,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:05:04,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:05:04,718 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:05:04,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:05:04,718 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:05:04,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:05:04,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:05:04,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:05:04,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:05:04,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:05:04,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:05:04,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:05:04,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:05:04,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 21:05:04,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 21:05:04,721 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:05:04,721 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:05:04,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:05:04,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:05:04,722 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 [2021-12-17 21:05:04,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:05:04,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:05:04,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:05:04,943 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:05:04,947 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:05:04,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2021-12-17 21:05:05,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2facd6a/aa5e072b5e8940ee885937503d63a2aa/FLAGfb946acd5 [2021-12-17 21:05:05,507 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:05:05,508 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2021-12-17 21:05:05,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2facd6a/aa5e072b5e8940ee885937503d63a2aa/FLAGfb946acd5 [2021-12-17 21:05:06,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d2facd6a/aa5e072b5e8940ee885937503d63a2aa [2021-12-17 21:05:06,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:05:06,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:05:06,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:05:06,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:05:06,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:05:06,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a990ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06, skipping insertion in model container [2021-12-17 21:05:06,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:05:06,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:05:06,224 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2021-12-17 21:05:06,292 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2021-12-17 21:05:06,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:05:06,385 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:05:06,396 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2021-12-17 21:05:06,425 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2021-12-17 21:05:06,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:05:06,478 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:05:06,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06 WrapperNode [2021-12-17 21:05:06,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:05:06,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:05:06,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:05:06,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:05:06,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,553 INFO L137 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 697 [2021-12-17 21:05:06,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:05:06,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:05:06,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:05:06,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:05:06,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:05:06,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:05:06,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:05:06,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:05:06,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (1/1) ... [2021-12-17 21:05:06,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:05:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:06,636 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) [2021-12-17 21:05:06,662 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 [2021-12-17 21:05:06,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:05:06,682 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 21:05:06,682 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 21:05:06,682 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-17 21:05:06,684 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-17 21:05:06,684 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-17 21:05:06,684 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-17 21:05:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-17 21:05:06,685 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-17 21:05:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-17 21:05:06,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-17 21:05:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-17 21:05:06,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-17 21:05:06,685 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-17 21:05:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-17 21:05:06,686 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-17 21:05:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-17 21:05:06,686 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-17 21:05:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-17 21:05:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-17 21:05:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-17 21:05:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-17 21:05:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-17 21:05:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 21:05:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-17 21:05:06,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-17 21:05:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-17 21:05:06,688 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-17 21:05:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:05:06,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:05:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-17 21:05:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-17 21:05:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-17 21:05:06,689 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-17 21:05:06,843 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:05:06,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:05:07,396 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:05:07,413 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:05:07,413 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-17 21:05:07,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:05:07 BoogieIcfgContainer [2021-12-17 21:05:07,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:05:07,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:05:07,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:05:07,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:05:07,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:05:06" (1/3) ... [2021-12-17 21:05:07,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1327f4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:05:07, skipping insertion in model container [2021-12-17 21:05:07,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:06" (2/3) ... [2021-12-17 21:05:07,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1327f4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:05:07, skipping insertion in model container [2021-12-17 21:05:07,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:05:07" (3/3) ... [2021-12-17 21:05:07,422 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2021-12-17 21:05:07,426 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:05:07,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:05:07,465 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:05:07,471 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 [2021-12-17 21:05:07,471 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:05:07,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 287 states have (on average 1.613240418118467) internal successors, (463), 295 states have internal predecessors, (463), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2021-12-17 21:05:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:07,499 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:07,500 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] [2021-12-17 21:05:07,500 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:07,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1403683270, now seen corresponding path program 1 times [2021-12-17 21:05:07,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:07,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088968051] [2021-12-17 21:05:07,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:07,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:07,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:07,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088968051] [2021-12-17 21:05:07,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088968051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:07,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:07,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:07,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125338620] [2021-12-17 21:05:07,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:07,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:07,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:07,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:07,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:07,959 INFO L87 Difference]: Start difference. First operand has 341 states, 287 states have (on average 1.613240418118467) internal successors, (463), 295 states have internal predecessors, (463), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:08,890 INFO L93 Difference]: Finished difference Result 794 states and 1240 transitions. [2021-12-17 21:05:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:08,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:08,905 INFO L225 Difference]: With dead ends: 794 [2021-12-17 21:05:08,905 INFO L226 Difference]: Without dead ends: 465 [2021-12-17 21:05:08,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:08,912 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 833 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:08,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 1552 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-12-17 21:05:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 426. [2021-12-17 21:05:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 355 states have (on average 1.4929577464788732) internal successors, (530), 362 states have internal predecessors, (530), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2021-12-17 21:05:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 625 transitions. [2021-12-17 21:05:08,984 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 625 transitions. Word has length 65 [2021-12-17 21:05:08,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:08,984 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 625 transitions. [2021-12-17 21:05:08,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:08,985 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 625 transitions. [2021-12-17 21:05:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:08,988 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:08,988 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] [2021-12-17 21:05:08,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 21:05:08,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:08,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1666920611, now seen corresponding path program 1 times [2021-12-17 21:05:08,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:08,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414081902] [2021-12-17 21:05:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:08,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:09,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:09,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414081902] [2021-12-17 21:05:09,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414081902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:09,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:09,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:09,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565750291] [2021-12-17 21:05:09,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:09,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:09,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:09,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:09,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:09,133 INFO L87 Difference]: Start difference. First operand 426 states and 625 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:10,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:10,057 INFO L93 Difference]: Finished difference Result 773 states and 1102 transitions. [2021-12-17 21:05:10,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 21:05:10,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:10,061 INFO L225 Difference]: With dead ends: 773 [2021-12-17 21:05:10,061 INFO L226 Difference]: Without dead ends: 596 [2021-12-17 21:05:10,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-17 21:05:10,064 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 986 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:10,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 1987 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-17 21:05:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 522. [2021-12-17 21:05:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 431 states have (on average 1.4709976798143851) internal successors, (634), 440 states have internal predecessors, (634), 58 states have call successors, (58), 29 states have call predecessors, (58), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2021-12-17 21:05:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 759 transitions. [2021-12-17 21:05:10,129 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 759 transitions. Word has length 65 [2021-12-17 21:05:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:10,129 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 759 transitions. [2021-12-17 21:05:10,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:10,130 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 759 transitions. [2021-12-17 21:05:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:10,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:10,139 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] [2021-12-17 21:05:10,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 21:05:10,139 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:10,140 INFO L85 PathProgramCache]: Analyzing trace with hash -361665499, now seen corresponding path program 1 times [2021-12-17 21:05:10,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:10,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289706118] [2021-12-17 21:05:10,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:10,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:10,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:10,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289706118] [2021-12-17 21:05:10,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289706118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:10,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:10,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 21:05:10,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620678632] [2021-12-17 21:05:10,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:10,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:05:10,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:05:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:10,309 INFO L87 Difference]: Start difference. First operand 522 states and 759 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:05:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:11,871 INFO L93 Difference]: Finished difference Result 1854 states and 2605 transitions. [2021-12-17 21:05:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 21:05:11,872 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-12-17 21:05:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:11,880 INFO L225 Difference]: With dead ends: 1854 [2021-12-17 21:05:11,880 INFO L226 Difference]: Without dead ends: 1569 [2021-12-17 21:05:11,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-17 21:05:11,883 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 2875 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 2078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:11,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2889 Valid, 1966 Invalid, 2078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 21:05:11,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2021-12-17 21:05:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1408. [2021-12-17 21:05:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1134 states have (on average 1.3835978835978835) internal successors, (1569), 1158 states have internal predecessors, (1569), 146 states have call successors, (146), 112 states have call predecessors, (146), 126 states have return successors, (178), 140 states have call predecessors, (178), 142 states have call successors, (178) [2021-12-17 21:05:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1893 transitions. [2021-12-17 21:05:11,958 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1893 transitions. Word has length 65 [2021-12-17 21:05:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:11,959 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 1893 transitions. [2021-12-17 21:05:11,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:05:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1893 transitions. [2021-12-17 21:05:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:11,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:11,960 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] [2021-12-17 21:05:11,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 21:05:11,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:11,961 INFO L85 PathProgramCache]: Analyzing trace with hash 689783590, now seen corresponding path program 1 times [2021-12-17 21:05:11,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:11,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718989949] [2021-12-17 21:05:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:11,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:11,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:12,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:12,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718989949] [2021-12-17 21:05:12,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718989949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:12,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:12,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:12,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923621039] [2021-12-17 21:05:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:12,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:12,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:12,067 INFO L87 Difference]: Start difference. First operand 1408 states and 1893 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:12,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:12,821 INFO L93 Difference]: Finished difference Result 2737 states and 3643 transitions. [2021-12-17 21:05:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:05:12,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-17 21:05:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:12,828 INFO L225 Difference]: With dead ends: 2737 [2021-12-17 21:05:12,829 INFO L226 Difference]: Without dead ends: 1572 [2021-12-17 21:05:12,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:12,832 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 602 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:12,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 2095 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2021-12-17 21:05:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1438. [2021-12-17 21:05:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1158 states have (on average 1.3687392055267702) internal successors, (1585), 1182 states have internal predecessors, (1585), 146 states have call successors, (146), 112 states have call predecessors, (146), 132 states have return successors, (184), 146 states have call predecessors, (184), 142 states have call successors, (184) [2021-12-17 21:05:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1915 transitions. [2021-12-17 21:05:12,895 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1915 transitions. Word has length 65 [2021-12-17 21:05:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:12,896 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 1915 transitions. [2021-12-17 21:05:12,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1915 transitions. [2021-12-17 21:05:12,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:12,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:12,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:12,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 21:05:12,898 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:12,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2075986984, now seen corresponding path program 1 times [2021-12-17 21:05:12,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:12,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821168273] [2021-12-17 21:05:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:12,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:12,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:12,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821168273] [2021-12-17 21:05:12,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821168273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:12,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:12,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:12,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289893742] [2021-12-17 21:05:12,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:12,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:12,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:12,987 INFO L87 Difference]: Start difference. First operand 1438 states and 1915 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:13,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:13,853 INFO L93 Difference]: Finished difference Result 2787 states and 3617 transitions. [2021-12-17 21:05:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 21:05:13,854 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:13,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:13,862 INFO L225 Difference]: With dead ends: 2787 [2021-12-17 21:05:13,862 INFO L226 Difference]: Without dead ends: 1815 [2021-12-17 21:05:13,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-12-17 21:05:13,869 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 1200 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:13,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 1483 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:13,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2021-12-17 21:05:13,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1380. [2021-12-17 21:05:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1116 states have (on average 1.3664874551971327) internal successors, (1525), 1135 states have internal predecessors, (1525), 140 states have call successors, (140), 107 states have call predecessors, (140), 122 states have return successors, (169), 139 states have call predecessors, (169), 136 states have call successors, (169) [2021-12-17 21:05:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1834 transitions. [2021-12-17 21:05:13,955 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1834 transitions. Word has length 65 [2021-12-17 21:05:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:13,955 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 1834 transitions. [2021-12-17 21:05:13,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1834 transitions. [2021-12-17 21:05:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:13,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:13,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:13,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 21:05:13,956 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:13,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1941973478, now seen corresponding path program 1 times [2021-12-17 21:05:13,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:13,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494176661] [2021-12-17 21:05:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:13,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:14,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:14,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494176661] [2021-12-17 21:05:14,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494176661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:14,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:14,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:14,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99946615] [2021-12-17 21:05:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:14,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:14,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:14,042 INFO L87 Difference]: Start difference. First operand 1380 states and 1834 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:14,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:14,493 INFO L93 Difference]: Finished difference Result 3734 states and 4852 transitions. [2021-12-17 21:05:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:05:14,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:14,507 INFO L225 Difference]: With dead ends: 3734 [2021-12-17 21:05:14,507 INFO L226 Difference]: Without dead ends: 2598 [2021-12-17 21:05:14,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:05:14,512 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 1170 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:14,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1197 Valid, 1188 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:14,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2021-12-17 21:05:14,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2478. [2021-12-17 21:05:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 1955 states have (on average 1.3048593350383633) internal successors, (2551), 1998 states have internal predecessors, (2551), 270 states have call successors, (270), 206 states have call predecessors, (270), 251 states have return successors, (381), 276 states have call predecessors, (381), 266 states have call successors, (381) [2021-12-17 21:05:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3202 transitions. [2021-12-17 21:05:14,627 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3202 transitions. Word has length 65 [2021-12-17 21:05:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:14,628 INFO L470 AbstractCegarLoop]: Abstraction has 2478 states and 3202 transitions. [2021-12-17 21:05:14,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3202 transitions. [2021-12-17 21:05:14,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:05:14,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:14,630 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] [2021-12-17 21:05:14,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 21:05:14,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash 754580266, now seen corresponding path program 1 times [2021-12-17 21:05:14,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:14,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670882570] [2021-12-17 21:05:14,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:14,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:14,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:14,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670882570] [2021-12-17 21:05:14,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670882570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:14,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:14,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:14,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475970897] [2021-12-17 21:05:14,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:14,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:14,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:14,718 INFO L87 Difference]: Start difference. First operand 2478 states and 3202 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:15,268 INFO L93 Difference]: Finished difference Result 5872 states and 7510 transitions. [2021-12-17 21:05:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:05:15,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-17 21:05:15,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:15,289 INFO L225 Difference]: With dead ends: 5872 [2021-12-17 21:05:15,289 INFO L226 Difference]: Without dead ends: 3643 [2021-12-17 21:05:15,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:15,298 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 816 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:15,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 1190 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:05:15,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2021-12-17 21:05:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3312. [2021-12-17 21:05:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 2600 states have (on average 1.2896153846153846) internal successors, (3353), 2650 states have internal predecessors, (3353), 366 states have call successors, (366), 286 states have call predecessors, (366), 344 states have return successors, (500), 378 states have call predecessors, (500), 362 states have call successors, (500) [2021-12-17 21:05:15,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4219 transitions. [2021-12-17 21:05:15,461 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4219 transitions. Word has length 66 [2021-12-17 21:05:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:15,462 INFO L470 AbstractCegarLoop]: Abstraction has 3312 states and 4219 transitions. [2021-12-17 21:05:15,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4219 transitions. [2021-12-17 21:05:15,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-17 21:05:15,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:15,468 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] [2021-12-17 21:05:15,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 21:05:15,468 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:15,469 INFO L85 PathProgramCache]: Analyzing trace with hash 575552873, now seen corresponding path program 1 times [2021-12-17 21:05:15,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:15,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788593708] [2021-12-17 21:05:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:15,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:15,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:15,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788593708] [2021-12-17 21:05:15,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788593708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:15,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:15,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:15,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447661127] [2021-12-17 21:05:15,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:15,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:15,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:15,539 INFO L87 Difference]: Start difference. First operand 3312 states and 4219 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:16,022 INFO L93 Difference]: Finished difference Result 7298 states and 9218 transitions. [2021-12-17 21:05:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:05:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-17 21:05:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:16,044 INFO L225 Difference]: With dead ends: 7298 [2021-12-17 21:05:16,044 INFO L226 Difference]: Without dead ends: 4233 [2021-12-17 21:05:16,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:16,052 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 904 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:16,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 1256 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:16,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2021-12-17 21:05:16,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 3887. [2021-12-17 21:05:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 3055 states have (on average 1.2821603927986907) internal successors, (3917), 3109 states have internal predecessors, (3917), 425 states have call successors, (425), 336 states have call predecessors, (425), 405 states have return successors, (582), 444 states have call predecessors, (582), 421 states have call successors, (582) [2021-12-17 21:05:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 4924 transitions. [2021-12-17 21:05:16,264 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 4924 transitions. Word has length 72 [2021-12-17 21:05:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:16,265 INFO L470 AbstractCegarLoop]: Abstraction has 3887 states and 4924 transitions. [2021-12-17 21:05:16,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 4924 transitions. [2021-12-17 21:05:16,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 21:05:16,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:16,267 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:16,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 21:05:16,267 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:16,268 INFO L85 PathProgramCache]: Analyzing trace with hash 145752580, now seen corresponding path program 1 times [2021-12-17 21:05:16,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:16,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866530578] [2021-12-17 21:05:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:16,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:16,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:16,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866530578] [2021-12-17 21:05:16,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866530578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:16,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:16,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:16,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057621525] [2021-12-17 21:05:16,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:16,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:16,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:16,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:16,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:16,356 INFO L87 Difference]: Start difference. First operand 3887 states and 4924 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:16,933 INFO L93 Difference]: Finished difference Result 5069 states and 6380 transitions. [2021-12-17 21:05:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:05:16,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2021-12-17 21:05:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:16,955 INFO L225 Difference]: With dead ends: 5069 [2021-12-17 21:05:16,955 INFO L226 Difference]: Without dead ends: 5066 [2021-12-17 21:05:16,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:05:16,958 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 1379 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:16,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 1216 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:05:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2021-12-17 21:05:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 4354. [2021-12-17 21:05:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 3412 states have (on average 1.272860492379836) internal successors, (4343), 3470 states have internal predecessors, (4343), 478 states have call successors, (478), 380 states have call predecessors, (478), 462 states have return successors, (664), 506 states have call predecessors, (664), 475 states have call successors, (664) [2021-12-17 21:05:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 5485 transitions. [2021-12-17 21:05:17,167 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 5485 transitions. Word has length 73 [2021-12-17 21:05:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:17,169 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 5485 transitions. [2021-12-17 21:05:17,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 5485 transitions. [2021-12-17 21:05:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-17 21:05:17,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:17,170 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:17,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 21:05:17,171 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 222341395, now seen corresponding path program 1 times [2021-12-17 21:05:17,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:17,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921327473] [2021-12-17 21:05:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:17,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:17,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:17,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921327473] [2021-12-17 21:05:17,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921327473] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:17,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250100662] [2021-12-17 21:05:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:17,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:17,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:17,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 21:05:17,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 21:05:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 21:05:17,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:17,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 21:05:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:18,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250100662] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 21:05:18,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 21:05:18,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-17 21:05:18,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910773407] [2021-12-17 21:05:18,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 21:05:18,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:05:18,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:18,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:05:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:18,146 INFO L87 Difference]: Start difference. First operand 4354 states and 5485 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-17 21:05:19,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:19,785 INFO L93 Difference]: Finished difference Result 8895 states and 11093 transitions. [2021-12-17 21:05:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-17 21:05:19,786 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2021-12-17 21:05:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:19,826 INFO L225 Difference]: With dead ends: 8895 [2021-12-17 21:05:19,827 INFO L226 Difference]: Without dead ends: 8892 [2021-12-17 21:05:19,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2021-12-17 21:05:19,833 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 1748 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:19,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1806 Valid, 2381 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 21:05:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2021-12-17 21:05:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 7823. [2021-12-17 21:05:20,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 6114 states have (on average 1.2600588812561335) internal successors, (7704), 6216 states have internal predecessors, (7704), 857 states have call successors, (857), 694 states have call predecessors, (857), 850 states have return successors, (1201), 915 states have call predecessors, (1201), 854 states have call successors, (1201) [2021-12-17 21:05:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 9762 transitions. [2021-12-17 21:05:20,202 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 9762 transitions. Word has length 74 [2021-12-17 21:05:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:20,202 INFO L470 AbstractCegarLoop]: Abstraction has 7823 states and 9762 transitions. [2021-12-17 21:05:20,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-17 21:05:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 9762 transitions. [2021-12-17 21:05:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 21:05:20,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:20,205 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:20,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:20,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 21:05:20,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:20,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -279508924, now seen corresponding path program 2 times [2021-12-17 21:05:20,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:20,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189507599] [2021-12-17 21:05:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:20,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:20,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:20,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:20,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189507599] [2021-12-17 21:05:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189507599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:20,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:20,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:20,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316371916] [2021-12-17 21:05:20,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:20,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:20,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:20,489 INFO L87 Difference]: Start difference. First operand 7823 states and 9762 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:21,016 INFO L93 Difference]: Finished difference Result 10533 states and 13174 transitions. [2021-12-17 21:05:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 21:05:21,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2021-12-17 21:05:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:21,046 INFO L225 Difference]: With dead ends: 10533 [2021-12-17 21:05:21,047 INFO L226 Difference]: Without dead ends: 4316 [2021-12-17 21:05:21,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:21,060 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 839 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:21,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 1318 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2021-12-17 21:05:21,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 3199. [2021-12-17 21:05:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2522 states have (on average 1.26050753370341) internal successors, (3179), 2558 states have internal predecessors, (3179), 350 states have call successors, (350), 276 states have call predecessors, (350), 325 states have return successors, (460), 367 states have call predecessors, (460), 347 states have call successors, (460) [2021-12-17 21:05:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 3989 transitions. [2021-12-17 21:05:21,240 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 3989 transitions. Word has length 77 [2021-12-17 21:05:21,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:21,241 INFO L470 AbstractCegarLoop]: Abstraction has 3199 states and 3989 transitions. [2021-12-17 21:05:21,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-17 21:05:21,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 3989 transitions. [2021-12-17 21:05:21,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-17 21:05:21,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:21,244 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:21,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 21:05:21,245 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash 976361349, now seen corresponding path program 1 times [2021-12-17 21:05:21,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:21,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333978358] [2021-12-17 21:05:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:21,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 21:05:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 21:05:21,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:21,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333978358] [2021-12-17 21:05:21,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333978358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:21,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:21,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:21,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933152961] [2021-12-17 21:05:21,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:21,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:21,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:21,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:21,331 INFO L87 Difference]: Start difference. First operand 3199 states and 3989 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:22,442 INFO L93 Difference]: Finished difference Result 9255 states and 11453 transitions. [2021-12-17 21:05:22,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 21:05:22,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2021-12-17 21:05:22,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:22,461 INFO L225 Difference]: With dead ends: 9255 [2021-12-17 21:05:22,461 INFO L226 Difference]: Without dead ends: 5440 [2021-12-17 21:05:22,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-12-17 21:05:22,471 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 1136 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:22,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 1776 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 21:05:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2021-12-17 21:05:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 5093. [2021-12-17 21:05:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 3961 states have (on average 1.2297399646553901) internal successors, (4871), 4028 states have internal predecessors, (4871), 568 states have call successors, (568), 448 states have call predecessors, (568), 562 states have return successors, (854), 619 states have call predecessors, (854), 565 states have call successors, (854) [2021-12-17 21:05:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 6293 transitions. [2021-12-17 21:05:22,768 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 6293 transitions. Word has length 84 [2021-12-17 21:05:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:22,768 INFO L470 AbstractCegarLoop]: Abstraction has 5093 states and 6293 transitions. [2021-12-17 21:05:22,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 6293 transitions. [2021-12-17 21:05:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 21:05:22,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:22,772 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 21:05:22,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 21:05:22,772 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 788007266, now seen corresponding path program 1 times [2021-12-17 21:05:22,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29328999] [2021-12-17 21:05:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:22,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 21:05:22,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 21:05:22,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29328999] [2021-12-17 21:05:22,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29328999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:22,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:22,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:22,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102168660] [2021-12-17 21:05:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:22,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:22,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:22,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:22,861 INFO L87 Difference]: Start difference. First operand 5093 states and 6293 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:24,025 INFO L93 Difference]: Finished difference Result 9449 states and 11556 transitions. [2021-12-17 21:05:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 21:05:24,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2021-12-17 21:05:24,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:24,039 INFO L225 Difference]: With dead ends: 9449 [2021-12-17 21:05:24,040 INFO L226 Difference]: Without dead ends: 5172 [2021-12-17 21:05:24,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-17 21:05:24,048 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 1511 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:24,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 1790 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 21:05:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2021-12-17 21:05:24,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 4801. [2021-12-17 21:05:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 3717 states have (on average 1.2085014796879203) internal successors, (4492), 3786 states have internal predecessors, (4492), 538 states have call successors, (538), 430 states have call predecessors, (538), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2021-12-17 21:05:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 5775 transitions. [2021-12-17 21:05:24,249 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 5775 transitions. Word has length 93 [2021-12-17 21:05:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:24,249 INFO L470 AbstractCegarLoop]: Abstraction has 4801 states and 5775 transitions. [2021-12-17 21:05:24,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-17 21:05:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 5775 transitions. [2021-12-17 21:05:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:24,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:24,253 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] [2021-12-17 21:05:24,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 21:05:24,253 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:24,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1464072493, now seen corresponding path program 1 times [2021-12-17 21:05:24,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:24,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742319671] [2021-12-17 21:05:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:24,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:24,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:24,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742319671] [2021-12-17 21:05:24,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742319671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:24,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:24,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 21:05:24,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552713515] [2021-12-17 21:05:24,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:24,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 21:05:24,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 21:05:24,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 21:05:24,339 INFO L87 Difference]: Start difference. First operand 4801 states and 5775 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:25,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:25,258 INFO L93 Difference]: Finished difference Result 5099 states and 6247 transitions. [2021-12-17 21:05:25,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:25,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:25,273 INFO L225 Difference]: With dead ends: 5099 [2021-12-17 21:05:25,274 INFO L226 Difference]: Without dead ends: 4877 [2021-12-17 21:05:25,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:25,277 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 692 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:25,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 964 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4877 states. [2021-12-17 21:05:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4877 to 4801. [2021-12-17 21:05:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 3717 states have (on average 1.208232445520581) internal successors, (4491), 3786 states have internal predecessors, (4491), 538 states have call successors, (538), 430 states have call predecessors, (538), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2021-12-17 21:05:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 5774 transitions. [2021-12-17 21:05:25,556 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 5774 transitions. Word has length 113 [2021-12-17 21:05:25,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:25,556 INFO L470 AbstractCegarLoop]: Abstraction has 4801 states and 5774 transitions. [2021-12-17 21:05:25,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 5774 transitions. [2021-12-17 21:05:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:25,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:25,559 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] [2021-12-17 21:05:25,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 21:05:25,560 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash 433031595, now seen corresponding path program 1 times [2021-12-17 21:05:25,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:25,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222678712] [2021-12-17 21:05:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:25,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:25,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222678712] [2021-12-17 21:05:25,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222678712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:25,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:25,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:25,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311820263] [2021-12-17 21:05:25,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:25,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:25,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:25,662 INFO L87 Difference]: Start difference. First operand 4801 states and 5774 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:27,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:27,749 INFO L93 Difference]: Finished difference Result 5412 states and 6754 transitions. [2021-12-17 21:05:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:27,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:27,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:27,766 INFO L225 Difference]: With dead ends: 5412 [2021-12-17 21:05:27,767 INFO L226 Difference]: Without dead ends: 5192 [2021-12-17 21:05:27,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:27,771 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1048 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:27,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 2190 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 21:05:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5192 states. [2021-12-17 21:05:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5192 to 5029. [2021-12-17 21:05:28,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5029 states, 3920 states have (on average 1.2275510204081632) internal successors, (4812), 3991 states have internal predecessors, (4812), 555 states have call successors, (555), 436 states have call predecessors, (555), 552 states have return successors, (769), 605 states have call predecessors, (769), 552 states have call successors, (769) [2021-12-17 21:05:28,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 6136 transitions. [2021-12-17 21:05:28,063 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 6136 transitions. Word has length 113 [2021-12-17 21:05:28,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:28,063 INFO L470 AbstractCegarLoop]: Abstraction has 5029 states and 6136 transitions. [2021-12-17 21:05:28,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:28,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 6136 transitions. [2021-12-17 21:05:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:28,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:28,066 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] [2021-12-17 21:05:28,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 21:05:28,067 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1784416813, now seen corresponding path program 1 times [2021-12-17 21:05:28,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:28,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953688492] [2021-12-17 21:05:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:28,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:28,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:28,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953688492] [2021-12-17 21:05:28,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953688492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:28,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:28,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:28,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743981217] [2021-12-17 21:05:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:28,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:28,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:28,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:28,172 INFO L87 Difference]: Start difference. First operand 5029 states and 6136 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:30,201 INFO L93 Difference]: Finished difference Result 6186 states and 7976 transitions. [2021-12-17 21:05:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:30,220 INFO L225 Difference]: With dead ends: 6186 [2021-12-17 21:05:30,221 INFO L226 Difference]: Without dead ends: 5740 [2021-12-17 21:05:30,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:30,225 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 1050 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:30,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 2089 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 21:05:30,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2021-12-17 21:05:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5449. [2021-12-17 21:05:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 4296 states have (on average 1.2558193668528863) internal successors, (5395), 4369 states have internal predecessors, (5395), 585 states have call successors, (585), 448 states have call predecessors, (585), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2021-12-17 21:05:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 6789 transitions. [2021-12-17 21:05:30,558 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 6789 transitions. Word has length 113 [2021-12-17 21:05:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:30,558 INFO L470 AbstractCegarLoop]: Abstraction has 5449 states and 6789 transitions. [2021-12-17 21:05:30,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:30,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 6789 transitions. [2021-12-17 21:05:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:30,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:30,562 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] [2021-12-17 21:05:30,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 21:05:30,562 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:30,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:30,563 INFO L85 PathProgramCache]: Analyzing trace with hash 165441899, now seen corresponding path program 1 times [2021-12-17 21:05:30,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:30,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135895442] [2021-12-17 21:05:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:30,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:30,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135895442] [2021-12-17 21:05:30,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135895442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:30,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:30,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:30,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463708505] [2021-12-17 21:05:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:30,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:30,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:30,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:30,658 INFO L87 Difference]: Start difference. First operand 5449 states and 6789 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:31,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:31,833 INFO L93 Difference]: Finished difference Result 6611 states and 8652 transitions. [2021-12-17 21:05:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:31,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:31,850 INFO L225 Difference]: With dead ends: 6611 [2021-12-17 21:05:31,850 INFO L226 Difference]: Without dead ends: 5743 [2021-12-17 21:05:31,854 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 [2021-12-17 21:05:31,855 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 897 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:31,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 1262 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 21:05:31,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5743 states. [2021-12-17 21:05:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5743 to 5449. [2021-12-17 21:05:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 4296 states have (on average 1.254655493482309) internal successors, (5390), 4369 states have internal predecessors, (5390), 585 states have call successors, (585), 448 states have call predecessors, (585), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2021-12-17 21:05:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 6784 transitions. [2021-12-17 21:05:32,139 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 6784 transitions. Word has length 113 [2021-12-17 21:05:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:32,140 INFO L470 AbstractCegarLoop]: Abstraction has 5449 states and 6784 transitions. [2021-12-17 21:05:32,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 6784 transitions. [2021-12-17 21:05:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:32,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:32,143 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] [2021-12-17 21:05:32,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 21:05:32,144 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:32,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:32,144 INFO L85 PathProgramCache]: Analyzing trace with hash -718067091, now seen corresponding path program 1 times [2021-12-17 21:05:32,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:32,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892023052] [2021-12-17 21:05:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:32,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:32,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:32,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892023052] [2021-12-17 21:05:32,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892023052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:32,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:32,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:32,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438457943] [2021-12-17 21:05:32,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:32,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:32,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:32,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:32,221 INFO L87 Difference]: Start difference. First operand 5449 states and 6784 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:34,220 INFO L93 Difference]: Finished difference Result 7695 states and 10331 transitions. [2021-12-17 21:05:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:34,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:34,242 INFO L225 Difference]: With dead ends: 7695 [2021-12-17 21:05:34,243 INFO L226 Difference]: Without dead ends: 6829 [2021-12-17 21:05:34,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:34,252 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 1047 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1960 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:34,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 2080 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1960 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:05:34,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2021-12-17 21:05:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 6294. [2021-12-17 21:05:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6294 states, 5053 states have (on average 1.2976449633880862) internal successors, (6557), 5130 states have internal predecessors, (6557), 645 states have call successors, (645), 472 states have call predecessors, (645), 594 states have return successors, (895), 701 states have call predecessors, (895), 642 states have call successors, (895) [2021-12-17 21:05:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6294 states to 6294 states and 8097 transitions. [2021-12-17 21:05:34,676 INFO L78 Accepts]: Start accepts. Automaton has 6294 states and 8097 transitions. Word has length 113 [2021-12-17 21:05:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:34,677 INFO L470 AbstractCegarLoop]: Abstraction has 6294 states and 8097 transitions. [2021-12-17 21:05:34,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 6294 states and 8097 transitions. [2021-12-17 21:05:34,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:34,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:34,681 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] [2021-12-17 21:05:34,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 21:05:34,681 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:34,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash -746567381, now seen corresponding path program 1 times [2021-12-17 21:05:34,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:34,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420303810] [2021-12-17 21:05:34,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:34,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:34,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:34,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:34,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:34,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420303810] [2021-12-17 21:05:34,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420303810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:34,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:34,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:34,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741947882] [2021-12-17 21:05:34,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:34,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:34,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:34,766 INFO L87 Difference]: Start difference. First operand 6294 states and 8097 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:36,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:36,753 INFO L93 Difference]: Finished difference Result 10720 states and 15092 transitions. [2021-12-17 21:05:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:36,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:36,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:36,781 INFO L225 Difference]: With dead ends: 10720 [2021-12-17 21:05:36,781 INFO L226 Difference]: Without dead ends: 9009 [2021-12-17 21:05:36,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:36,791 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1047 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1954 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:36,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 2077 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1954 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:05:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2021-12-17 21:05:37,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 7991. [2021-12-17 21:05:37,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7991 states, 6574 states have (on average 1.3539701855795558) internal successors, (8901), 6659 states have internal predecessors, (8901), 765 states have call successors, (765), 520 states have call predecessors, (765), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2021-12-17 21:05:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7991 states to 7991 states and 10751 transitions. [2021-12-17 21:05:37,228 INFO L78 Accepts]: Start accepts. Automaton has 7991 states and 10751 transitions. Word has length 113 [2021-12-17 21:05:37,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:37,228 INFO L470 AbstractCegarLoop]: Abstraction has 7991 states and 10751 transitions. [2021-12-17 21:05:37,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 7991 states and 10751 transitions. [2021-12-17 21:05:37,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:37,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:37,234 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] [2021-12-17 21:05:37,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 21:05:37,234 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:37,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1607817901, now seen corresponding path program 1 times [2021-12-17 21:05:37,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:37,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808503485] [2021-12-17 21:05:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:37,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:37,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:37,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808503485] [2021-12-17 21:05:37,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808503485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:37,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:37,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:37,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751860519] [2021-12-17 21:05:37,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:37,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:37,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:37,321 INFO L87 Difference]: Start difference. First operand 7991 states and 10751 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:38,510 INFO L93 Difference]: Finished difference Result 12465 states and 17909 transitions. [2021-12-17 21:05:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:38,538 INFO L225 Difference]: With dead ends: 12465 [2021-12-17 21:05:38,538 INFO L226 Difference]: Without dead ends: 9055 [2021-12-17 21:05:38,551 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 [2021-12-17 21:05:38,552 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 855 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:38,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1275 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9055 states. [2021-12-17 21:05:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9055 to 7991. [2021-12-17 21:05:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7991 states, 6574 states have (on average 1.3513842409491938) internal successors, (8884), 6659 states have internal predecessors, (8884), 765 states have call successors, (765), 520 states have call predecessors, (765), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2021-12-17 21:05:39,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7991 states to 7991 states and 10734 transitions. [2021-12-17 21:05:39,060 INFO L78 Accepts]: Start accepts. Automaton has 7991 states and 10734 transitions. Word has length 113 [2021-12-17 21:05:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:39,061 INFO L470 AbstractCegarLoop]: Abstraction has 7991 states and 10734 transitions. [2021-12-17 21:05:39,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 7991 states and 10734 transitions. [2021-12-17 21:05:39,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:39,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:39,066 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] [2021-12-17 21:05:39,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 21:05:39,066 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:39,067 INFO L85 PathProgramCache]: Analyzing trace with hash -810086165, now seen corresponding path program 1 times [2021-12-17 21:05:39,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:39,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338987667] [2021-12-17 21:05:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:39,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:39,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:39,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:39,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:39,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338987667] [2021-12-17 21:05:39,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338987667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:39,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:39,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:39,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359772422] [2021-12-17 21:05:39,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:39,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:39,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:39,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:39,149 INFO L87 Difference]: Start difference. First operand 7991 states and 10734 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:40,234 INFO L93 Difference]: Finished difference Result 12448 states and 17826 transitions. [2021-12-17 21:05:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:40,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:40,267 INFO L225 Difference]: With dead ends: 12448 [2021-12-17 21:05:40,267 INFO L226 Difference]: Without dead ends: 9038 [2021-12-17 21:05:40,281 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 [2021-12-17 21:05:40,282 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 853 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:40,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 1267 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9038 states. [2021-12-17 21:05:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9038 to 7991. [2021-12-17 21:05:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7991 states, 6574 states have (on average 1.3487982963188319) internal successors, (8867), 6659 states have internal predecessors, (8867), 765 states have call successors, (765), 520 states have call predecessors, (765), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2021-12-17 21:05:40,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7991 states to 7991 states and 10717 transitions. [2021-12-17 21:05:40,800 INFO L78 Accepts]: Start accepts. Automaton has 7991 states and 10717 transitions. Word has length 113 [2021-12-17 21:05:40,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:40,801 INFO L470 AbstractCegarLoop]: Abstraction has 7991 states and 10717 transitions. [2021-12-17 21:05:40,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand 7991 states and 10717 transitions. [2021-12-17 21:05:40,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:40,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:40,806 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] [2021-12-17 21:05:40,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 21:05:40,806 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:40,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1580819731, now seen corresponding path program 1 times [2021-12-17 21:05:40,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:40,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818781771] [2021-12-17 21:05:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:40,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:40,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:40,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818781771] [2021-12-17 21:05:40,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818781771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:40,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:40,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:40,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425129850] [2021-12-17 21:05:40,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:40,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:40,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:40,894 INFO L87 Difference]: Start difference. First operand 7991 states and 10717 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:42,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:42,994 INFO L93 Difference]: Finished difference Result 17807 states and 26080 transitions. [2021-12-17 21:05:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:05:42,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:42,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:43,035 INFO L225 Difference]: With dead ends: 17807 [2021-12-17 21:05:43,035 INFO L226 Difference]: Without dead ends: 14399 [2021-12-17 21:05:43,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:43,051 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 1099 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:43,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2125 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 21:05:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14399 states. [2021-12-17 21:05:43,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14399 to 11398. [2021-12-17 21:05:43,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11398 states, 9645 states have (on average 1.4074650077760498) internal successors, (13575), 9746 states have internal predecessors, (13575), 989 states have call successors, (989), 616 states have call predecessors, (989), 762 states have return successors, (1503), 1069 states have call predecessors, (1503), 986 states have call successors, (1503) [2021-12-17 21:05:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11398 states to 11398 states and 16067 transitions. [2021-12-17 21:05:43,851 INFO L78 Accepts]: Start accepts. Automaton has 11398 states and 16067 transitions. Word has length 113 [2021-12-17 21:05:43,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:43,852 INFO L470 AbstractCegarLoop]: Abstraction has 11398 states and 16067 transitions. [2021-12-17 21:05:43,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 11398 states and 16067 transitions. [2021-12-17 21:05:43,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:43,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:43,860 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] [2021-12-17 21:05:43,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 21:05:43,860 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2127871343, now seen corresponding path program 1 times [2021-12-17 21:05:43,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:43,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173753625] [2021-12-17 21:05:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:43,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:43,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:43,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173753625] [2021-12-17 21:05:43,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173753625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:43,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:43,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:43,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245222062] [2021-12-17 21:05:43,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:43,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:43,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:43,953 INFO L87 Difference]: Start difference. First operand 11398 states and 16067 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:46,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:46,362 INFO L93 Difference]: Finished difference Result 30396 states and 46004 transitions. [2021-12-17 21:05:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:05:46,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:46,428 INFO L225 Difference]: With dead ends: 30396 [2021-12-17 21:05:46,428 INFO L226 Difference]: Without dead ends: 23581 [2021-12-17 21:05:46,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:46,456 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1194 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:46,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 2044 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 21:05:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23581 states. [2021-12-17 21:05:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23581 to 18196. [2021-12-17 21:05:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18196 states, 15787 states have (on average 1.457338316336226) internal successors, (23007), 15920 states have internal predecessors, (23007), 1421 states have call successors, (1421), 808 states have call predecessors, (1421), 986 states have return successors, (2485), 1533 states have call predecessors, (2485), 1418 states have call successors, (2485) [2021-12-17 21:05:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18196 states to 18196 states and 26913 transitions. [2021-12-17 21:05:47,523 INFO L78 Accepts]: Start accepts. Automaton has 18196 states and 26913 transitions. Word has length 113 [2021-12-17 21:05:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:47,524 INFO L470 AbstractCegarLoop]: Abstraction has 18196 states and 26913 transitions. [2021-12-17 21:05:47,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18196 states and 26913 transitions. [2021-12-17 21:05:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:47,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:47,535 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] [2021-12-17 21:05:47,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 21:05:47,535 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash 169296557, now seen corresponding path program 1 times [2021-12-17 21:05:47,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:47,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092523179] [2021-12-17 21:05:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:47,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:47,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:47,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092523179] [2021-12-17 21:05:47,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092523179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:47,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:47,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:47,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460812321] [2021-12-17 21:05:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:47,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:47,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:47,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:47,698 INFO L87 Difference]: Start difference. First operand 18196 states and 26913 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:49,469 INFO L93 Difference]: Finished difference Result 35450 states and 54833 transitions. [2021-12-17 21:05:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:49,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:49,523 INFO L225 Difference]: With dead ends: 35450 [2021-12-17 21:05:49,523 INFO L226 Difference]: Without dead ends: 21835 [2021-12-17 21:05:49,547 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 [2021-12-17 21:05:49,547 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 1007 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:49,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1070 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21835 states. [2021-12-17 21:05:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21835 to 18196. [2021-12-17 21:05:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18196 states, 15787 states have (on average 1.4532210046240577) internal successors, (22942), 15920 states have internal predecessors, (22942), 1421 states have call successors, (1421), 808 states have call predecessors, (1421), 986 states have return successors, (2485), 1533 states have call predecessors, (2485), 1418 states have call successors, (2485) [2021-12-17 21:05:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18196 states to 18196 states and 26848 transitions. [2021-12-17 21:05:50,621 INFO L78 Accepts]: Start accepts. Automaton has 18196 states and 26848 transitions. Word has length 113 [2021-12-17 21:05:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:50,622 INFO L470 AbstractCegarLoop]: Abstraction has 18196 states and 26848 transitions. [2021-12-17 21:05:50,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 18196 states and 26848 transitions. [2021-12-17 21:05:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:50,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:50,633 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] [2021-12-17 21:05:50,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 21:05:50,634 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash 2045779375, now seen corresponding path program 1 times [2021-12-17 21:05:50,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:50,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080261288] [2021-12-17 21:05:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:50,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:50,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:50,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:50,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080261288] [2021-12-17 21:05:50,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080261288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:50,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:50,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:50,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098878301] [2021-12-17 21:05:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:50,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:50,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:50,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:50,721 INFO L87 Difference]: Start difference. First operand 18196 states and 26848 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:54,325 INFO L93 Difference]: Finished difference Result 54022 states and 83826 transitions. [2021-12-17 21:05:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:05:54,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:05:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:54,472 INFO L225 Difference]: With dead ends: 54022 [2021-12-17 21:05:54,473 INFO L226 Difference]: Without dead ends: 40409 [2021-12-17 21:05:54,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:54,518 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 1067 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:54,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1089 Valid, 2061 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 21:05:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40409 states. [2021-12-17 21:05:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40409 to 31824. [2021-12-17 21:05:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31824 states, 28135 states have (on average 1.4870446063621823) internal successors, (41838), 28332 states have internal predecessors, (41838), 2253 states have call successors, (2253), 1192 states have call predecessors, (2253), 1434 states have return successors, (4903), 2429 states have call predecessors, (4903), 2250 states have call successors, (4903) [2021-12-17 21:05:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31824 states to 31824 states and 48994 transitions. [2021-12-17 21:05:56,497 INFO L78 Accepts]: Start accepts. Automaton has 31824 states and 48994 transitions. Word has length 113 [2021-12-17 21:05:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:56,497 INFO L470 AbstractCegarLoop]: Abstraction has 31824 states and 48994 transitions. [2021-12-17 21:05:56,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:05:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 31824 states and 48994 transitions. [2021-12-17 21:05:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:05:56,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:56,516 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] [2021-12-17 21:05:56,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 21:05:56,517 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:56,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:56,517 INFO L85 PathProgramCache]: Analyzing trace with hash 166648429, now seen corresponding path program 1 times [2021-12-17 21:05:56,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:56,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722847626] [2021-12-17 21:05:56,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:56,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:05:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:05:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:05:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:05:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:56,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:56,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:56,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722847626] [2021-12-17 21:05:56,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722847626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:56,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:56,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:56,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767385617] [2021-12-17 21:05:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:56,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:56,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:56,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:56,603 INFO L87 Difference]: Start difference. First operand 31824 states and 48994 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:06:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:01,929 INFO L93 Difference]: Finished difference Result 101114 states and 161322 transitions. [2021-12-17 21:06:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:06:01,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:06:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:02,154 INFO L225 Difference]: With dead ends: 101114 [2021-12-17 21:06:02,154 INFO L226 Difference]: Without dead ends: 73873 [2021-12-17 21:06:02,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:06:02,220 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1075 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1807 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:02,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 2029 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1807 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 21:06:02,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73873 states. [2021-12-17 21:06:05,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73873 to 59016. [2021-12-17 21:06:05,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59016 states, 52831 states have (on average 1.5084704056330565) internal successors, (79694), 53156 states have internal predecessors, (79694), 3853 states have call successors, (3853), 1960 states have call predecessors, (3853), 2330 states have return successors, (11133), 4157 states have call predecessors, (11133), 3850 states have call successors, (11133) [2021-12-17 21:06:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59016 states to 59016 states and 94680 transitions. [2021-12-17 21:06:05,865 INFO L78 Accepts]: Start accepts. Automaton has 59016 states and 94680 transitions. Word has length 113 [2021-12-17 21:06:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:05,865 INFO L470 AbstractCegarLoop]: Abstraction has 59016 states and 94680 transitions. [2021-12-17 21:06:05,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:06:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 59016 states and 94680 transitions. [2021-12-17 21:06:05,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-17 21:06:05,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:05,894 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] [2021-12-17 21:06:05,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 21:06:05,895 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1491504623, now seen corresponding path program 1 times [2021-12-17 21:06:05,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:05,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146510441] [2021-12-17 21:06:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:05,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:05,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-17 21:06:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 21:06:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 21:06:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:05,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 21:06:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:05,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:05,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:05,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146510441] [2021-12-17 21:06:05,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146510441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:05,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:05,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:05,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068309174] [2021-12-17 21:06:05,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:05,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:05,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:05,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:05,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:05,998 INFO L87 Difference]: Start difference. First operand 59016 states and 94680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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) [2021-12-17 21:06:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:14,259 INFO L93 Difference]: Finished difference Result 157088 states and 248843 transitions. [2021-12-17 21:06:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:06:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (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 113 [2021-12-17 21:06:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:14,567 INFO L225 Difference]: With dead ends: 157088 [2021-12-17 21:06:14,567 INFO L226 Difference]: Without dead ends: 102655 [2021-12-17 21:06:14,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-17 21:06:14,660 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 745 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:14,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 1752 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 21:06:14,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102655 states.