./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_3.cil+token_ring.05.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8067f6f3f9b2e7af84aa5945c9ed2ea4ff7d9ddfc1aa86a10fb4bb83ea8bdef8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:10:26,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:10:26,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:10:26,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:10:26,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:10:26,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:10:26,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:10:26,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:10:26,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:10:26,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:10:26,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:10:26,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:10:26,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:10:26,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:10:26,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:10:26,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:10:26,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:10:26,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:10:26,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:10:26,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:10:26,565 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:10:26,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:10:26,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:10:26,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:10:26,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:10:26,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:10:26,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:10:26,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:10:26,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:10:26,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:10:26,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:10:26,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:10:26,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:10:26,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:10:26,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:10:26,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:10:26,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:10:26,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:10:26,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:10:26,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:10:26,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:10:26,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:10:26,584 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:10:26,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:10:26,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:10:26,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:10:26,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:10:26,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:10:26,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:10:26,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:10:26,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:10:26,613 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:10:26,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:10:26,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:10:26,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:10:26,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:10:26,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:10:26,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:10:26,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:10:26,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:10:26,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:10:26,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:10:26,615 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:10:26,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:10:26,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:10:26,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:10:26,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:10:26,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:10:26,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:10:26,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:10:26,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:10:26,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:10:26,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:10:26,617 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:10:26,617 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:10:26,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:10:26,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8067f6f3f9b2e7af84aa5945c9ed2ea4ff7d9ddfc1aa86a10fb4bb83ea8bdef8 [2022-07-21 08:10:26,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:10:26,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:10:26,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:10:26,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:10:26,880 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:10:26,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c [2022-07-21 08:10:26,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4691a481/c5d5a110451d4a46831f2517298362a5/FLAG47f24d06f [2022-07-21 08:10:27,329 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:10:27,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-2.c [2022-07-21 08:10:27,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4691a481/c5d5a110451d4a46831f2517298362a5/FLAG47f24d06f [2022-07-21 08:10:27,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4691a481/c5d5a110451d4a46831f2517298362a5 [2022-07-21 08:10:27,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:10:27,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:10:27,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:10:27,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:10:27,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:10:27,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:10:27" (1/1) ... [2022-07-21 08:10:27,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4516d448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:27, skipping insertion in model container [2022-07-21 08:10:27,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:10:27" (1/1) ... [2022-07-21 08:10:27,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:10:27,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:10:27,864 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_3.cil+token_ring.05.cil-2.c[911,924] [2022-07-21 08:10:27,958 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_3.cil+token_ring.05.cil-2.c[8416,8429] [2022-07-21 08:10:28,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:10:28,058 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:10:28,068 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_3.cil+token_ring.05.cil-2.c[911,924] [2022-07-21 08:10:28,090 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_3.cil+token_ring.05.cil-2.c[8416,8429] [2022-07-21 08:10:28,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:10:28,119 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:10:28,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28 WrapperNode [2022-07-21 08:10:28,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:10:28,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:10:28,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:10:28,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:10:28,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,171 INFO L137 Inliner]: procedures = 65, calls = 77, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 677 [2022-07-21 08:10:28,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:10:28,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:10:28,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:10:28,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:10:28,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:10:28,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:10:28,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:10:28,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:10:28,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (1/1) ... [2022-07-21 08:10:28,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:10:28,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:10:28,270 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) [2022-07-21 08:10:28,288 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 [2022-07-21 08:10:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:10:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:10:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:10:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:10:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:10:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:10:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:10:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:10:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:10:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:10:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:10:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:10:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:10:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:10:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:10:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:10:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:10:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:10:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:10:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:10:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:10:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:10:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:10:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:10:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:10:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:10:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:10:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:10:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:10:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:10:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:10:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:10:28,314 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-21 08:10:28,314 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-21 08:10:28,431 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:10:28,433 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:10:28,848 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-21 08:10:28,848 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-21 08:10:28,898 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:10:28,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:10:28,905 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-21 08:10:28,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:10:28 BoogieIcfgContainer [2022-07-21 08:10:28,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:10:28,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:10:28,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:10:28,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:10:28,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:10:27" (1/3) ... [2022-07-21 08:10:28,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49878891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:10:28, skipping insertion in model container [2022-07-21 08:10:28,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:10:28" (2/3) ... [2022-07-21 08:10:28,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49878891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:10:28, skipping insertion in model container [2022-07-21 08:10:28,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:10:28" (3/3) ... [2022-07-21 08:10:28,912 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.05.cil-2.c [2022-07-21 08:10:28,921 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:10:28,922 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:10:28,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:10:28,965 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@647b1885, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@694ead21 [2022-07-21 08:10:28,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:10:28,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 277 states have (on average 1.6028880866425992) internal successors, (444), 285 states have internal predecessors, (444), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 08:10:28,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:28,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:28,982 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:28,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:28,986 INFO L85 PathProgramCache]: Analyzing trace with hash 481480506, now seen corresponding path program 1 times [2022-07-21 08:10:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:28,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042958571] [2022-07-21 08:10:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:29,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:29,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042958571] [2022-07-21 08:10:29,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042958571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:29,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:29,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:29,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403622947] [2022-07-21 08:10:29,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:29,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:29,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:29,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:29,345 INFO L87 Difference]: Start difference. First operand has 332 states, 277 states have (on average 1.6028880866425992) internal successors, (444), 285 states have internal predecessors, (444), 37 states have call successors, (37), 15 states have call predecessors, (37), 15 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) 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) [2022-07-21 08:10:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:30,099 INFO L93 Difference]: Finished difference Result 793 states and 1237 transitions. [2022-07-21 08:10:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:30,101 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 [2022-07-21 08:10:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:30,111 INFO L225 Difference]: With dead ends: 793 [2022-07-21 08:10:30,111 INFO L226 Difference]: Without dead ends: 472 [2022-07-21 08:10:30,115 INFO L412 NwaCegarLoop]: 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 [2022-07-21 08:10:30,117 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1089 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:30,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1421 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:10:30,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-07-21 08:10:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 433. [2022-07-21 08:10:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 359 states have (on average 1.49025069637883) internal successors, (535), 366 states have internal predecessors, (535), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-21 08:10:30,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 636 transitions. [2022-07-21 08:10:30,172 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 636 transitions. Word has length 65 [2022-07-21 08:10:30,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:30,172 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 636 transitions. [2022-07-21 08:10:30,172 INFO L496 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) [2022-07-21 08:10:30,173 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 636 transitions. [2022-07-21 08:10:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:30,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:30,177 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:30,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:10:30,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:30,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:30,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2134598150, now seen corresponding path program 1 times [2022-07-21 08:10:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:30,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433336627] [2022-07-21 08:10:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:30,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:30,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433336627] [2022-07-21 08:10:30,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433336627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:30,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:30,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:10:30,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205991021] [2022-07-21 08:10:30,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:30,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:10:30,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:10:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:10:30,276 INFO L87 Difference]: Start difference. First operand 433 states and 636 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) [2022-07-21 08:10:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:31,023 INFO L93 Difference]: Finished difference Result 830 states and 1202 transitions. [2022-07-21 08:10:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:10:31,024 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 [2022-07-21 08:10:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:31,031 INFO L225 Difference]: With dead ends: 830 [2022-07-21 08:10:31,032 INFO L226 Difference]: Without dead ends: 621 [2022-07-21 08:10:31,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:10:31,035 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1160 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:31,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 1536 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:10:31,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-07-21 08:10:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 545. [2022-07-21 08:10:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 449 states have (on average 1.4721603563474388) internal successors, (661), 458 states have internal predecessors, (661), 63 states have call successors, (63), 29 states have call predecessors, (63), 31 states have return successors, (72), 61 states have call predecessors, (72), 59 states have call successors, (72) [2022-07-21 08:10:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 796 transitions. [2022-07-21 08:10:31,084 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 796 transitions. Word has length 65 [2022-07-21 08:10:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 796 transitions. [2022-07-21 08:10:31,085 INFO L496 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) [2022-07-21 08:10:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 796 transitions. [2022-07-21 08:10:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:10:31,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:31,092 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:31,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:10:31,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:31,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:31,093 INFO L85 PathProgramCache]: Analyzing trace with hash 131783036, now seen corresponding path program 1 times [2022-07-21 08:10:31,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:31,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803997386] [2022-07-21 08:10:31,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:31,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:10:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:10:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:10:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:31,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:31,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803997386] [2022-07-21 08:10:31,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803997386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:31,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:31,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:10:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667720520] [2022-07-21 08:10:31,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:31,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:10:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:31,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:10:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:10:31,202 INFO L87 Difference]: Start difference. First operand 545 states and 796 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 08:10:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:32,630 INFO L93 Difference]: Finished difference Result 2091 states and 2994 transitions. [2022-07-21 08:10:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:10:32,631 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-21 08:10:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:32,641 INFO L225 Difference]: With dead ends: 2091 [2022-07-21 08:10:32,641 INFO L226 Difference]: Without dead ends: 1758 [2022-07-21 08:10:32,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:10:32,647 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 2668 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2690 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:32,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2690 Valid, 2347 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:32,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-07-21 08:10:32,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1598. [2022-07-21 08:10:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1297 states have (on average 1.3916730917501927) internal successors, (1805), 1321 states have internal predecessors, (1805), 173 states have call successors, (173), 112 states have call predecessors, (173), 126 states have return successors, (205), 167 states have call predecessors, (205), 169 states have call successors, (205) [2022-07-21 08:10:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2183 transitions. [2022-07-21 08:10:32,725 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2183 transitions. Word has length 65 [2022-07-21 08:10:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:32,725 INFO L495 AbstractCegarLoop]: Abstraction has 1598 states and 2183 transitions. [2022-07-21 08:10:32,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-21 08:10:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2183 transitions. [2022-07-21 08:10:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:10:32,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:32,726 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:10:32,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash 754147135, now seen corresponding path program 1 times [2022-07-21 08:10:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260758864] [2022-07-21 08:10:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:10:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:10:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:32,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:32,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260758864] [2022-07-21 08:10:32,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260758864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:32,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:32,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:32,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851023352] [2022-07-21 08:10:32,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:32,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:32,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:32,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:32,823 INFO L87 Difference]: Start difference. First operand 1598 states and 2183 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-21 08:10:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:33,468 INFO L93 Difference]: Finished difference Result 3126 states and 4262 transitions. [2022-07-21 08:10:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:10:33,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-07-21 08:10:33,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:33,474 INFO L225 Difference]: With dead ends: 3126 [2022-07-21 08:10:33,474 INFO L226 Difference]: Without dead ends: 1746 [2022-07-21 08:10:33,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:33,477 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 576 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:33,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 1904 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:10:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2022-07-21 08:10:33,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1638. [2022-07-21 08:10:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1329 states have (on average 1.3777276147479307) internal successors, (1831), 1353 states have internal predecessors, (1831), 173 states have call successors, (173), 112 states have call predecessors, (173), 134 states have return successors, (213), 175 states have call predecessors, (213), 169 states have call successors, (213) [2022-07-21 08:10:33,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2217 transitions. [2022-07-21 08:10:33,526 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2217 transitions. Word has length 66 [2022-07-21 08:10:33,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:33,526 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2217 transitions. [2022-07-21 08:10:33,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-21 08:10:33,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2217 transitions. [2022-07-21 08:10:33,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:10:33,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:33,527 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:33,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:10:33,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:33,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash -275212163, now seen corresponding path program 1 times [2022-07-21 08:10:33,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:33,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131618454] [2022-07-21 08:10:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:10:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:10:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:33,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:33,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131618454] [2022-07-21 08:10:33,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131618454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:33,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:33,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:10:33,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184991121] [2022-07-21 08:10:33,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:33,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:10:33,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:10:33,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:10:33,631 INFO L87 Difference]: Start difference. First operand 1638 states and 2217 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-21 08:10:34,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:34,971 INFO L93 Difference]: Finished difference Result 5210 states and 7091 transitions. [2022-07-21 08:10:34,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:10:34,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 66 [2022-07-21 08:10:34,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:34,979 INFO L225 Difference]: With dead ends: 5210 [2022-07-21 08:10:34,979 INFO L226 Difference]: Without dead ends: 2029 [2022-07-21 08:10:34,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:10:34,985 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 2774 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 2371 SdHoareTripleChecker+Invalid, 2236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:34,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2796 Valid, 2371 Invalid, 2236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:10:34,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-07-21 08:10:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1849. [2022-07-21 08:10:35,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1468 states have (on average 1.3331062670299727) internal successors, (1957), 1494 states have internal predecessors, (1957), 213 states have call successors, (213), 140 states have call predecessors, (213), 166 states have return successors, (259), 217 states have call predecessors, (259), 209 states have call successors, (259) [2022-07-21 08:10:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2429 transitions. [2022-07-21 08:10:35,051 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2429 transitions. Word has length 66 [2022-07-21 08:10:35,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:35,052 INFO L495 AbstractCegarLoop]: Abstraction has 1849 states and 2429 transitions. [2022-07-21 08:10:35,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-07-21 08:10:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2429 transitions. [2022-07-21 08:10:35,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:35,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:35,053 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-07-21 08:10:35,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:10:35,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 443189305, now seen corresponding path program 1 times [2022-07-21 08:10:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:35,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939455414] [2022-07-21 08:10:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:35,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:10:35,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:35,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939455414] [2022-07-21 08:10:35,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939455414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:35,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:35,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139220861] [2022-07-21 08:10:35,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:35,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:35,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:35,144 INFO L87 Difference]: Start difference. First operand 1849 states and 2429 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-21 08:10:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:35,778 INFO L93 Difference]: Finished difference Result 3674 states and 4831 transitions. [2022-07-21 08:10:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:10:35,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-21 08:10:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:35,785 INFO L225 Difference]: With dead ends: 3674 [2022-07-21 08:10:35,785 INFO L226 Difference]: Without dead ends: 2043 [2022-07-21 08:10:35,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:35,789 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 384 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:35,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2065 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:10:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-07-21 08:10:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1909. [2022-07-21 08:10:35,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1516 states have (on average 1.3186015831134565) internal successors, (1999), 1542 states have internal predecessors, (1999), 213 states have call successors, (213), 140 states have call predecessors, (213), 178 states have return successors, (271), 229 states have call predecessors, (271), 209 states have call successors, (271) [2022-07-21 08:10:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2483 transitions. [2022-07-21 08:10:35,857 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2483 transitions. Word has length 91 [2022-07-21 08:10:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:35,857 INFO L495 AbstractCegarLoop]: Abstraction has 1909 states and 2483 transitions. [2022-07-21 08:10:35,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-21 08:10:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2483 transitions. [2022-07-21 08:10:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:35,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:35,859 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-07-21 08:10:35,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:10:35,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash 887089979, now seen corresponding path program 1 times [2022-07-21 08:10:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:35,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731420229] [2022-07-21 08:10:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:35,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:10:35,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:35,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731420229] [2022-07-21 08:10:35,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731420229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:35,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:35,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016410511] [2022-07-21 08:10:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:35,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:35,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:35,916 INFO L87 Difference]: Start difference. First operand 1909 states and 2483 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 08:10:36,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:36,380 INFO L93 Difference]: Finished difference Result 5506 states and 7191 transitions. [2022-07-21 08:10:36,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:10:36,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-21 08:10:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:36,393 INFO L225 Difference]: With dead ends: 5506 [2022-07-21 08:10:36,393 INFO L226 Difference]: Without dead ends: 3816 [2022-07-21 08:10:36,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:10:36,398 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 848 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:36,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1484 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:10:36,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2022-07-21 08:10:36,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3596. [2022-07-21 08:10:36,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 2830 states have (on average 1.2848056537102472) internal successors, (3636), 2890 states have internal predecessors, (3636), 402 states have call successors, (402), 272 states have call predecessors, (402), 362 states have return successors, (603), 438 states have call predecessors, (603), 398 states have call successors, (603) [2022-07-21 08:10:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 4641 transitions. [2022-07-21 08:10:36,522 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 4641 transitions. Word has length 91 [2022-07-21 08:10:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:36,523 INFO L495 AbstractCegarLoop]: Abstraction has 3596 states and 4641 transitions. [2022-07-21 08:10:36,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-21 08:10:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 4641 transitions. [2022-07-21 08:10:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:10:36,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:36,525 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2022-07-21 08:10:36,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:10:36,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash -170748099, now seen corresponding path program 1 times [2022-07-21 08:10:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:36,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534101333] [2022-07-21 08:10:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:36,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:10:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:10:36,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:36,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534101333] [2022-07-21 08:10:36,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534101333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:36,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:36,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:10:36,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220298342] [2022-07-21 08:10:36,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:36,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:10:36,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:10:36,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:10:36,579 INFO L87 Difference]: Start difference. First operand 3596 states and 4641 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:36,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:36,935 INFO L93 Difference]: Finished difference Result 5404 states and 6909 transitions. [2022-07-21 08:10:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:10:36,936 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-21 08:10:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:36,942 INFO L225 Difference]: With dead ends: 5404 [2022-07-21 08:10:36,943 INFO L226 Difference]: Without dead ends: 2027 [2022-07-21 08:10:36,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:10:36,948 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 500 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:36,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1239 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:10:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2022-07-21 08:10:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1909. [2022-07-21 08:10:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1516 states have (on average 1.2902374670184698) internal successors, (1956), 1542 states have internal predecessors, (1956), 213 states have call successors, (213), 140 states have call predecessors, (213), 178 states have return successors, (271), 229 states have call predecessors, (271), 209 states have call successors, (271) [2022-07-21 08:10:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2440 transitions. [2022-07-21 08:10:37,023 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2440 transitions. Word has length 91 [2022-07-21 08:10:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:37,023 INFO L495 AbstractCegarLoop]: Abstraction has 1909 states and 2440 transitions. [2022-07-21 08:10:37,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:10:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2440 transitions. [2022-07-21 08:10:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 08:10:37,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:37,025 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-07-21 08:10:37,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:10:37,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:37,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash -196498665, now seen corresponding path program 1 times [2022-07-21 08:10:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:37,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898339989] [2022-07-21 08:10:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:10:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:10:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:10:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:10:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:10:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:10:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 08:10:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:10:37,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:37,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898339989] [2022-07-21 08:10:37,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898339989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:37,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:37,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:10:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030361872] [2022-07-21 08:10:37,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:37,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:10:37,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:10:37,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:10:37,108 INFO L87 Difference]: Start difference. First operand 1909 states and 2440 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) [2022-07-21 08:10:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:38,141 INFO L93 Difference]: Finished difference Result 4718 states and 6019 transitions. [2022-07-21 08:10:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:10:38,142 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 92 [2022-07-21 08:10:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:38,151 INFO L225 Difference]: With dead ends: 4718 [2022-07-21 08:10:38,151 INFO L226 Difference]: Without dead ends: 2723 [2022-07-21 08:10:38,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-21 08:10:38,155 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 1551 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:38,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1776 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:10:38,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-07-21 08:10:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2546. [2022-07-21 08:10:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 1994 states have (on average 1.2537612838515546) internal successors, (2500), 2029 states have internal predecessors, (2500), 292 states have call successors, (292), 189 states have call predecessors, (292), 258 states have return successors, (407), 330 states have call predecessors, (407), 288 states have call successors, (407) [2022-07-21 08:10:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3199 transitions. [2022-07-21 08:10:38,253 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3199 transitions. Word has length 92 [2022-07-21 08:10:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 2546 states and 3199 transitions. [2022-07-21 08:10:38,253 INFO L496 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) [2022-07-21 08:10:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3199 transitions. [2022-07-21 08:10:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:38,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:38,256 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:38,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:10:38,256 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash -140072605, now seen corresponding path program 1 times [2022-07-21 08:10:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:38,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220435943] [2022-07-21 08:10:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:38,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:38,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220435943] [2022-07-21 08:10:38,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220435943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:38,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:38,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:10:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130560701] [2022-07-21 08:10:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:38,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:10:38,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:10:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:10:38,319 INFO L87 Difference]: Start difference. First operand 2546 states and 3199 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:38,907 INFO L93 Difference]: Finished difference Result 2813 states and 3621 transitions. [2022-07-21 08:10:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:10:38,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:38,915 INFO L225 Difference]: With dead ends: 2813 [2022-07-21 08:10:38,915 INFO L226 Difference]: Without dead ends: 2611 [2022-07-21 08:10:38,916 INFO L412 NwaCegarLoop]: 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 [2022-07-21 08:10:38,917 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 628 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:38,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 908 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:10:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-07-21 08:10:39,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2546. [2022-07-21 08:10:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 1994 states have (on average 1.253259779338014) internal successors, (2499), 2029 states have internal predecessors, (2499), 292 states have call successors, (292), 189 states have call predecessors, (292), 258 states have return successors, (407), 330 states have call predecessors, (407), 288 states have call successors, (407) [2022-07-21 08:10:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3198 transitions. [2022-07-21 08:10:39,043 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3198 transitions. Word has length 102 [2022-07-21 08:10:39,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:39,043 INFO L495 AbstractCegarLoop]: Abstraction has 2546 states and 3198 transitions. [2022-07-21 08:10:39,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:39,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3198 transitions. [2022-07-21 08:10:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:39,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:39,047 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:39,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:10:39,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash 743436385, now seen corresponding path program 1 times [2022-07-21 08:10:39,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:39,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802849209] [2022-07-21 08:10:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:39,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:39,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:39,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802849209] [2022-07-21 08:10:39,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802849209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:39,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:39,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:10:39,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390949852] [2022-07-21 08:10:39,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:39,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:10:39,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:10:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:10:39,119 INFO L87 Difference]: Start difference. First operand 2546 states and 3198 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:40,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:40,133 INFO L93 Difference]: Finished difference Result 3072 states and 4029 transitions. [2022-07-21 08:10:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:10:40,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:40,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:40,142 INFO L225 Difference]: With dead ends: 3072 [2022-07-21 08:10:40,143 INFO L226 Difference]: Without dead ends: 2876 [2022-07-21 08:10:40,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:10:40,144 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1005 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:40,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1220 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:10:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2022-07-21 08:10:40,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2745. [2022-07-21 08:10:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2745 states, 2172 states have (on average 1.2790055248618784) internal successors, (2778), 2208 states have internal predecessors, (2778), 306 states have call successors, (306), 195 states have call predecessors, (306), 265 states have return successors, (424), 344 states have call predecessors, (424), 302 states have call successors, (424) [2022-07-21 08:10:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3508 transitions. [2022-07-21 08:10:40,249 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3508 transitions. Word has length 102 [2022-07-21 08:10:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:40,249 INFO L495 AbstractCegarLoop]: Abstraction has 2745 states and 3508 transitions. [2022-07-21 08:10:40,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:40,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3508 transitions. [2022-07-21 08:10:40,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:40,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:40,251 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:40,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:10:40,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:40,252 INFO L85 PathProgramCache]: Analyzing trace with hash -940378787, now seen corresponding path program 1 times [2022-07-21 08:10:40,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:40,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705973588] [2022-07-21 08:10:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:40,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:40,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:40,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:40,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705973588] [2022-07-21 08:10:40,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705973588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:40,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:40,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:40,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682786950] [2022-07-21 08:10:40,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:40,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:40,321 INFO L87 Difference]: Start difference. First operand 2745 states and 3508 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:41,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:41,652 INFO L93 Difference]: Finished difference Result 3542 states and 4766 transitions. [2022-07-21 08:10:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:41,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:41,667 INFO L225 Difference]: With dead ends: 3542 [2022-07-21 08:10:41,667 INFO L226 Difference]: Without dead ends: 3147 [2022-07-21 08:10:41,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:41,670 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1008 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:41,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1953 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2022-07-21 08:10:41,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2932. [2022-07-21 08:10:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2338 states have (on average 1.297262617621899) internal successors, (3033), 2375 states have internal predecessors, (3033), 320 states have call successors, (320), 201 states have call predecessors, (320), 272 states have return successors, (440), 359 states have call predecessors, (440), 316 states have call successors, (440) [2022-07-21 08:10:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 3793 transitions. [2022-07-21 08:10:41,799 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 3793 transitions. Word has length 102 [2022-07-21 08:10:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:41,800 INFO L495 AbstractCegarLoop]: Abstraction has 2932 states and 3793 transitions. [2022-07-21 08:10:41,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:41,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 3793 transitions. [2022-07-21 08:10:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:41,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:41,802 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:41,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:10:41,802 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:41,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1475457563, now seen corresponding path program 1 times [2022-07-21 08:10:41,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:41,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867632236] [2022-07-21 08:10:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:41,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:41,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:41,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867632236] [2022-07-21 08:10:41,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867632236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:41,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:41,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914745020] [2022-07-21 08:10:41,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:41,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:41,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:41,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:41,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:41,876 INFO L87 Difference]: Start difference. First operand 2932 states and 3793 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:43,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:43,183 INFO L93 Difference]: Finished difference Result 4232 states and 5839 transitions. [2022-07-21 08:10:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:43,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:43,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:43,194 INFO L225 Difference]: With dead ends: 4232 [2022-07-21 08:10:43,194 INFO L226 Difference]: Without dead ends: 3650 [2022-07-21 08:10:43,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:43,196 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1004 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:43,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1946 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2022-07-21 08:10:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3309. [2022-07-21 08:10:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 2673 states have (on average 1.3273475495697717) internal successors, (3548), 2712 states have internal predecessors, (3548), 348 states have call successors, (348), 213 states have call predecessors, (348), 286 states have return successors, (476), 389 states have call predecessors, (476), 344 states have call successors, (476) [2022-07-21 08:10:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4372 transitions. [2022-07-21 08:10:43,313 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4372 transitions. Word has length 102 [2022-07-21 08:10:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:43,313 INFO L495 AbstractCegarLoop]: Abstraction has 3309 states and 4372 transitions. [2022-07-21 08:10:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:43,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4372 transitions. [2022-07-21 08:10:43,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:43,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:43,319 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:43,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:10:43,319 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1494653539, now seen corresponding path program 1 times [2022-07-21 08:10:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:43,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433457434] [2022-07-21 08:10:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:43,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:43,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:43,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433457434] [2022-07-21 08:10:43,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433457434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:43,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:43,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403332836] [2022-07-21 08:10:43,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:43,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:43,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:43,405 INFO L87 Difference]: Start difference. First operand 3309 states and 4372 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:44,743 INFO L93 Difference]: Finished difference Result 5571 states and 7918 transitions. [2022-07-21 08:10:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:44,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:44,775 INFO L225 Difference]: With dead ends: 5571 [2022-07-21 08:10:44,775 INFO L226 Difference]: Without dead ends: 4612 [2022-07-21 08:10:44,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:44,778 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 1003 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:44,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1941 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2022-07-21 08:10:44,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 4066. [2022-07-21 08:10:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4066 states, 3346 states have (on average 1.3693962940824866) internal successors, (4582), 3389 states have internal predecessors, (4582), 404 states have call successors, (404), 237 states have call predecessors, (404), 314 states have return successors, (554), 449 states have call predecessors, (554), 400 states have call successors, (554) [2022-07-21 08:10:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4066 states to 4066 states and 5540 transitions. [2022-07-21 08:10:44,924 INFO L78 Accepts]: Start accepts. Automaton has 4066 states and 5540 transitions. Word has length 102 [2022-07-21 08:10:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:44,925 INFO L495 AbstractCegarLoop]: Abstraction has 4066 states and 5540 transitions. [2022-07-21 08:10:44,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4066 states and 5540 transitions. [2022-07-21 08:10:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:44,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:44,929 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:44,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:10:44,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:44,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 72104411, now seen corresponding path program 1 times [2022-07-21 08:10:44,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:44,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043815199] [2022-07-21 08:10:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:44,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:44,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:44,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:44,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043815199] [2022-07-21 08:10:44,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043815199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:44,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:44,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358596641] [2022-07-21 08:10:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:44,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:44,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:44,997 INFO L87 Difference]: Start difference. First operand 4066 states and 5540 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:46,435 INFO L93 Difference]: Finished difference Result 8250 states and 12096 transitions. [2022-07-21 08:10:46,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:10:46,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:46,449 INFO L225 Difference]: With dead ends: 8250 [2022-07-21 08:10:46,449 INFO L226 Difference]: Without dead ends: 6534 [2022-07-21 08:10:46,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:10:46,454 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 1002 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:46,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1936 Invalid, 1840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:10:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6534 states. [2022-07-21 08:10:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6534 to 5587. [2022-07-21 08:10:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 4699 states have (on average 1.4173228346456692) internal successors, (6660), 4750 states have internal predecessors, (6660), 516 states have call successors, (516), 285 states have call predecessors, (516), 370 states have return successors, (728), 569 states have call predecessors, (728), 512 states have call successors, (728) [2022-07-21 08:10:46,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 7904 transitions. [2022-07-21 08:10:46,652 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 7904 transitions. Word has length 102 [2022-07-21 08:10:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:46,675 INFO L495 AbstractCegarLoop]: Abstraction has 5587 states and 7904 transitions. [2022-07-21 08:10:46,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:46,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 7904 transitions. [2022-07-21 08:10:46,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:46,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:46,679 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:46,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:10:46,679 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash -985733667, now seen corresponding path program 1 times [2022-07-21 08:10:46,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:46,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480632669] [2022-07-21 08:10:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:46,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:46,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:46,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480632669] [2022-07-21 08:10:46,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480632669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:46,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:46,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122784141] [2022-07-21 08:10:46,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:46,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:46,746 INFO L87 Difference]: Start difference. First operand 5587 states and 7904 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:48,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:48,561 INFO L93 Difference]: Finished difference Result 14873 states and 22404 transitions. [2022-07-21 08:10:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:48,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:48,588 INFO L225 Difference]: With dead ends: 14873 [2022-07-21 08:10:48,588 INFO L226 Difference]: Without dead ends: 11636 [2022-07-21 08:10:48,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:48,599 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 1054 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1972 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 2088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:48,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 2009 Invalid, 2088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1972 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:10:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11636 states. [2022-07-21 08:10:48,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11636 to 8596. [2022-07-21 08:10:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 7388 states have (on average 1.4626421223605848) internal successors, (10806), 7455 states have internal predecessors, (10806), 724 states have call successors, (724), 381 states have call predecessors, (724), 482 states have return successors, (1114), 793 states have call predecessors, (1114), 720 states have call successors, (1114) [2022-07-21 08:10:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 12644 transitions. [2022-07-21 08:10:48,992 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 12644 transitions. Word has length 102 [2022-07-21 08:10:48,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:48,992 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 12644 transitions. [2022-07-21 08:10:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 12644 transitions. [2022-07-21 08:10:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:48,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:48,997 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:48,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:10:48,997 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2128236133, now seen corresponding path program 1 times [2022-07-21 08:10:48,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:48,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584598225] [2022-07-21 08:10:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:49,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:49,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584598225] [2022-07-21 08:10:49,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584598225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:49,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:49,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694318308] [2022-07-21 08:10:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:49,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:49,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:49,060 INFO L87 Difference]: Start difference. First operand 8596 states and 12644 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:51,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:51,180 INFO L93 Difference]: Finished difference Result 26328 states and 40522 transitions. [2022-07-21 08:10:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:51,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:51,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:51,241 INFO L225 Difference]: With dead ends: 26328 [2022-07-21 08:10:51,241 INFO L226 Difference]: Without dead ends: 20082 [2022-07-21 08:10:51,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:51,264 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 1214 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:51,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1445 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:10:51,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20082 states. [2022-07-21 08:10:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20082 to 14277. [2022-07-21 08:10:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14277 states, 12445 states have (on average 1.4894335074327039) internal successors, (18536), 12544 states have internal predecessors, (18536), 1124 states have call successors, (1124), 573 states have call predecessors, (1124), 706 states have return successors, (2032), 1225 states have call predecessors, (2032), 1120 states have call successors, (2032) [2022-07-21 08:10:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14277 states to 14277 states and 21692 transitions. [2022-07-21 08:10:51,991 INFO L78 Accepts]: Start accepts. Automaton has 14277 states and 21692 transitions. Word has length 102 [2022-07-21 08:10:51,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:51,991 INFO L495 AbstractCegarLoop]: Abstraction has 14277 states and 21692 transitions. [2022-07-21 08:10:51,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 14277 states and 21692 transitions. [2022-07-21 08:10:51,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:51,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:52,000 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:52,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:10:52,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:52,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:52,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1887996387, now seen corresponding path program 1 times [2022-07-21 08:10:52,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:52,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133256101] [2022-07-21 08:10:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:52,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:52,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133256101] [2022-07-21 08:10:52,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133256101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:52,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:52,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:52,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363723249] [2022-07-21 08:10:52,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:52,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:52,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:52,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:52,056 INFO L87 Difference]: Start difference. First operand 14277 states and 21692 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:55,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:55,103 INFO L93 Difference]: Finished difference Result 47687 states and 74704 transitions. [2022-07-21 08:10:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:55,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:10:55,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:55,203 INFO L225 Difference]: With dead ends: 47687 [2022-07-21 08:10:55,203 INFO L226 Difference]: Without dead ends: 35760 [2022-07-21 08:10:55,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:55,240 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 1035 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:55,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1969 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:10:55,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35760 states. [2022-07-21 08:10:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35760 to 25926. [2022-07-21 08:10:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25926 states, 22878 states have (on average 1.5124573826383425) internal successors, (34602), 23041 states have internal predecessors, (34602), 1892 states have call successors, (1892), 957 states have call predecessors, (1892), 1154 states have return successors, (4322), 2057 states have call predecessors, (4322), 1888 states have call successors, (4322) [2022-07-21 08:10:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25926 states to 25926 states and 40816 transitions. [2022-07-21 08:10:56,600 INFO L78 Accepts]: Start accepts. Automaton has 25926 states and 40816 transitions. Word has length 102 [2022-07-21 08:10:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:56,600 INFO L495 AbstractCegarLoop]: Abstraction has 25926 states and 40816 transitions. [2022-07-21 08:10:56,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:10:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 25926 states and 40816 transitions. [2022-07-21 08:10:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:10:56,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:56,614 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:10:56,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:10:56,614 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1048962725, now seen corresponding path program 1 times [2022-07-21 08:10:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:56,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758701672] [2022-07-21 08:10:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:56,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:10:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:10:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:10:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:10:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:56,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:56,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758701672] [2022-07-21 08:10:56,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758701672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:56,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:56,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:56,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680038974] [2022-07-21 08:10:56,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:56,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:56,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:56,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:56,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:56,683 INFO L87 Difference]: Start difference. First operand 25926 states and 40816 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:11:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:01,334 INFO L93 Difference]: Finished difference Result 88196 states and 141970 transitions. [2022-07-21 08:11:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:01,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:11:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:01,562 INFO L225 Difference]: With dead ends: 88196 [2022-07-21 08:11:01,562 INFO L226 Difference]: Without dead ends: 64620 [2022-07-21 08:11:01,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:01,634 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1054 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:01,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1900 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:11:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64620 states. [2022-07-21 08:11:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64620 to 49288. [2022-07-21 08:11:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49288 states, 43872 states have (on average 1.5284008023340627) internal successors, (67054), 44163 states have internal predecessors, (67054), 3364 states have call successors, (3364), 1725 states have call predecessors, (3364), 2050 states have return successors, (10296), 3657 states have call predecessors, (10296), 3360 states have call successors, (10296) [2022-07-21 08:11:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49288 states to 49288 states and 80714 transitions. [2022-07-21 08:11:04,430 INFO L78 Accepts]: Start accepts. Automaton has 49288 states and 80714 transitions. Word has length 102 [2022-07-21 08:11:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:04,430 INFO L495 AbstractCegarLoop]: Abstraction has 49288 states and 80714 transitions. [2022-07-21 08:11:04,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:11:04,430 INFO L276 IsEmpty]: Start isEmpty. Operand 49288 states and 80714 transitions. [2022-07-21 08:11:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:11:04,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:04,457 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:11:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:11:04,457 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:04,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1168667673, now seen corresponding path program 1 times [2022-07-21 08:11:04,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:04,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571742735] [2022-07-21 08:11:04,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:04,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:11:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:11:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:11:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:04,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:04,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571742735] [2022-07-21 08:11:04,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571742735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:04,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:04,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:04,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218077671] [2022-07-21 08:11:04,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:04,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:04,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:04,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:04,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:04,514 INFO L87 Difference]: Start difference. First operand 49288 states and 80714 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:11:12,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:12,284 INFO L93 Difference]: Finished difference Result 168900 states and 281642 transitions. [2022-07-21 08:11:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:11:12,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:11:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:12,726 INFO L225 Difference]: With dead ends: 168900 [2022-07-21 08:11:12,727 INFO L226 Difference]: Without dead ends: 121962 [2022-07-21 08:11:12,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:11:12,869 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 999 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:12,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1908 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:11:12,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121962 states. [2022-07-21 08:11:18,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121962 to 95881. [2022-07-21 08:11:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95881 states, 85857 states have (on average 1.538371944046496) internal successors, (132080), 86404 states have internal predecessors, (132080), 6180 states have call successors, (6180), 3261 states have call predecessors, (6180), 3842 states have return successors, (26490), 6729 states have call predecessors, (26490), 6176 states have call successors, (26490) [2022-07-21 08:11:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95881 states to 95881 states and 164750 transitions. [2022-07-21 08:11:18,764 INFO L78 Accepts]: Start accepts. Automaton has 95881 states and 164750 transitions. Word has length 102 [2022-07-21 08:11:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:11:18,765 INFO L495 AbstractCegarLoop]: Abstraction has 95881 states and 164750 transitions. [2022-07-21 08:11:18,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:11:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 95881 states and 164750 transitions. [2022-07-21 08:11:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 08:11:18,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:11:18,816 INFO L195 NwaCegarLoop]: 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] [2022-07-21 08:11:18,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:11:18,816 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:11:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:11:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1392195173, now seen corresponding path program 1 times [2022-07-21 08:11:18,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:11:18,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182172391] [2022-07-21 08:11:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:11:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:11:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:11:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 08:11:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 08:11:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 08:11:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:18,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 08:11:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:11:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:11:18,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:11:18,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182172391] [2022-07-21 08:11:18,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182172391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:11:18,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:11:18,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:11:18,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682918147] [2022-07-21 08:11:18,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:11:18,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:11:18,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:11:18,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:11:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:11:18,875 INFO L87 Difference]: Start difference. First operand 95881 states and 164750 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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) [2022-07-21 08:11:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:11:33,499 INFO L93 Difference]: Finished difference Result 262418 states and 434664 transitions. [2022-07-21 08:11:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:11:33,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (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 102 [2022-07-21 08:11:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:11:34,249 INFO L225 Difference]: With dead ends: 262418 [2022-07-21 08:11:34,249 INFO L226 Difference]: Without dead ends: 168888 [2022-07-21 08:11:34,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:11:34,641 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 662 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:11:34,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 1538 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:11:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168888 states.