./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.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.14.cil.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 5519dfe0be74dafaa274c71ed936f0e7133f32a3aa7e45c032b5d5b905afa484 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:12:13,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:12:13,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:12:13,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:12:13,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:12:13,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:12:13,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:12:13,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:12:13,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:12:13,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:12:13,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:12:13,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:12:13,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:12:13,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:12:13,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:12:13,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:12:13,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:12:13,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:12:13,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:12:13,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:12:13,678 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:12:13,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:12:13,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:12:13,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:12:13,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:12:13,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:12:13,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:12:13,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:12:13,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:12:13,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:12:13,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:12:13,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:12:13,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:12:13,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:12:13,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:12:13,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:12:13,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:12:13,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:12:13,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:12:13,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:12:13,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:12:13,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:12:13,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:12:13,746 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:12:13,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:12:13,747 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:12:13,748 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:12:13,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:12:13,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:12:13,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:12:13,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:12:13,750 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:12:13,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:12:13,751 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:12:13,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:12:13,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:12:13,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:12:13,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:12:13,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:12:13,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:12:13,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:12:13,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:12:13,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:12:13,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:12:13,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:12:13,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:12:13,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:12:13,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:12:13,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:12:13,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:12:13,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:12:13,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:12:13,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:12:13,756 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:12:13,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:12:13,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:12:13,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5519dfe0be74dafaa274c71ed936f0e7133f32a3aa7e45c032b5d5b905afa484 [2022-07-21 08:12:14,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:12:14,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:12:14,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:12:14,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:12:14,125 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:12:14,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2022-07-21 08:12:14,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d333262e/f7f2461385a744b3bc3159bc9f5ddd78/FLAG918df9132 [2022-07-21 08:12:14,626 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:12:14,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2022-07-21 08:12:14,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d333262e/f7f2461385a744b3bc3159bc9f5ddd78/FLAG918df9132 [2022-07-21 08:12:14,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d333262e/f7f2461385a744b3bc3159bc9f5ddd78 [2022-07-21 08:12:15,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:12:15,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:12:15,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:12:15,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:12:15,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:12:15,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:12:14" (1/1) ... [2022-07-21 08:12:15,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590a201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15, skipping insertion in model container [2022-07-21 08:12:15,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:12:14" (1/1) ... [2022-07-21 08:12:15,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:12:15,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:12:15,176 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.14.cil.c[911,924] [2022-07-21 08:12:15,262 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.14.cil.c[8416,8429] [2022-07-21 08:12:15,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:12:15,457 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:12:15,468 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.14.cil.c[911,924] [2022-07-21 08:12:15,493 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.14.cil.c[8416,8429] [2022-07-21 08:12:15,552 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:12:15,585 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:12:15,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15 WrapperNode [2022-07-21 08:12:15,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:12:15,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:12:15,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:12:15,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:12:15,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,682 INFO L137 Inliner]: procedures = 79, calls = 98, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1081 [2022-07-21 08:12:15,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:12:15,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:12:15,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:12:15,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:12:15,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:12:15,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:12:15,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:12:15,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:12:15,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (1/1) ... [2022-07-21 08:12:15,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:12:15,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:12:15,812 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 08:12:15,828 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 08:12:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:12:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:12:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:12:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:12:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:12:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:12:15,849 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:12:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:12:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:12:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:12:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:12:15,850 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:12:15,850 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:12:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:12:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:12:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:12:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:12:15,851 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:12:15,851 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:12:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:12:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:12:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:12:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:12:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:12:15,852 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:12:15,852 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:12:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:12:15,853 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:12:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:12:15,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:12:15,853 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:12:15,853 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:12:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-21 08:12:15,854 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-21 08:12:15,969 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:12:15,971 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:12:16,706 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-21 08:12:16,706 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 08:12:16,778 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:12:16,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:12:16,790 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-21 08:12:16,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:12:16 BoogieIcfgContainer [2022-07-21 08:12:16,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:12:16,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:12:16,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:12:16,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:12:16,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:12:14" (1/3) ... [2022-07-21 08:12:16,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243ca47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:12:16, skipping insertion in model container [2022-07-21 08:12:16,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:12:15" (2/3) ... [2022-07-21 08:12:16,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243ca47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:12:16, skipping insertion in model container [2022-07-21 08:12:16,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:12:16" (3/3) ... [2022-07-21 08:12:16,799 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.14.cil.c [2022-07-21 08:12:16,810 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:12:16,811 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:12:16,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:12:16,888 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@75e9b884, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5a409ff9 [2022-07-21 08:12:16,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:12:16,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 505 states, 443 states have (on average 1.6410835214446953) internal successors, (727), 451 states have internal predecessors, (727), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-21 08:12:16,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:12:16,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:16,905 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 08:12:16,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:16,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1125668429, now seen corresponding path program 1 times [2022-07-21 08:12:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857489830] [2022-07-21 08:12:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:16,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:12:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:12:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:12:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:17,277 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 08:12:17,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:17,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857489830] [2022-07-21 08:12:17,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857489830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:17,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:17,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:12:17,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097169154] [2022-07-21 08:12:17,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:12:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:17,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:12:17,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:12:17,318 INFO L87 Difference]: Start difference. First operand has 505 states, 443 states have (on average 1.6410835214446953) internal successors, (727), 451 states have internal predecessors, (727), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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 08:12:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:18,191 INFO L93 Difference]: Finished difference Result 999 states and 1610 transitions. [2022-07-21 08:12:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:12:18,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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 65 [2022-07-21 08:12:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:18,212 INFO L225 Difference]: With dead ends: 999 [2022-07-21 08:12:18,212 INFO L226 Difference]: Without dead ends: 512 [2022-07-21 08:12:18,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:12:18,221 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 788 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:18,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 2127 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:12:18,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-21 08:12:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 494. [2022-07-21 08:12:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 435 states have (on average 1.554022988505747) internal successors, (676), 440 states have internal predecessors, (676), 44 states have call successors, (44), 15 states have call predecessors, (44), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-21 08:12:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 760 transitions. [2022-07-21 08:12:18,289 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 760 transitions. Word has length 65 [2022-07-21 08:12:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:18,290 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 760 transitions. [2022-07-21 08:12:18,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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 08:12:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 760 transitions. [2022-07-21 08:12:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:12:18,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:18,293 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 08:12:18,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:12:18,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:18,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash -261116981, now seen corresponding path program 1 times [2022-07-21 08:12:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:18,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648988065] [2022-07-21 08:12:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:18,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:12:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:12:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:12:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:18,443 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 08:12:18,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:18,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648988065] [2022-07-21 08:12:18,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648988065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:18,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:18,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:12:18,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281538492] [2022-07-21 08:12:18,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:18,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:12:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:18,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:12:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:12:18,453 INFO L87 Difference]: Start difference. First operand 494 states and 760 transitions. 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 08:12:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:19,533 INFO L93 Difference]: Finished difference Result 749 states and 1129 transitions. [2022-07-21 08:12:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:12:19,534 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 08:12:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:19,542 INFO L225 Difference]: With dead ends: 749 [2022-07-21 08:12:19,542 INFO L226 Difference]: Without dead ends: 645 [2022-07-21 08:12:19,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:12:19,546 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 1281 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:19,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1288 Valid, 2527 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:12:19,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-07-21 08:12:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 606. [2022-07-21 08:12:19,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 525 states have (on average 1.5276190476190477) internal successors, (802), 532 states have internal predecessors, (802), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-07-21 08:12:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 917 transitions. [2022-07-21 08:12:19,587 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 917 transitions. Word has length 65 [2022-07-21 08:12:19,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:19,588 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 917 transitions. [2022-07-21 08:12:19,588 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 08:12:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 917 transitions. [2022-07-21 08:12:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:12:19,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:19,591 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 08:12:19,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:12:19,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1417771659, now seen corresponding path program 1 times [2022-07-21 08:12:19,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:19,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035128835] [2022-07-21 08:12:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:12:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:12:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:12:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:19,727 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 08:12:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035128835] [2022-07-21 08:12:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035128835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:19,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:19,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:12:19,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901725830] [2022-07-21 08:12:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:12:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:19,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:12:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:12:19,730 INFO L87 Difference]: Start difference. First operand 606 states and 917 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 08:12:20,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:20,949 INFO L93 Difference]: Finished difference Result 1003 states and 1482 transitions. [2022-07-21 08:12:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:12:20,950 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 08:12:20,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:20,955 INFO L225 Difference]: With dead ends: 1003 [2022-07-21 08:12:20,955 INFO L226 Difference]: Without dead ends: 794 [2022-07-21 08:12:20,956 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 08:12:20,957 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1858 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:20,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 2323 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:12:20,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-07-21 08:12:21,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 718. [2022-07-21 08:12:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 615 states have (on average 1.5073170731707317) internal successors, (927), 624 states have internal predecessors, (927), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2022-07-21 08:12:21,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1076 transitions. [2022-07-21 08:12:21,006 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1076 transitions. Word has length 65 [2022-07-21 08:12:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:21,007 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1076 transitions. [2022-07-21 08:12:21,007 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 08:12:21,007 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1076 transitions. [2022-07-21 08:12:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:12:21,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:21,011 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 08:12:21,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:12:21,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash -610814451, now seen corresponding path program 1 times [2022-07-21 08:12:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119786328] [2022-07-21 08:12:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:12:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:12:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:12:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:21,111 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 08:12:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119786328] [2022-07-21 08:12:21,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119786328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:21,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:21,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:12:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500978030] [2022-07-21 08:12:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:12:21,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:12:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:12:21,113 INFO L87 Difference]: Start difference. First operand 718 states and 1076 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 08:12:23,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:23,027 INFO L93 Difference]: Finished difference Result 2264 states and 3273 transitions. [2022-07-21 08:12:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:12:23,036 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 08:12:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:23,046 INFO L225 Difference]: With dead ends: 2264 [2022-07-21 08:12:23,046 INFO L226 Difference]: Without dead ends: 1931 [2022-07-21 08:12:23,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:12:23,060 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 4369 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4391 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:23,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4391 Valid, 2829 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:12:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-07-21 08:12:23,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1771. [2022-07-21 08:12:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1463 states have (on average 1.4169514695830485) internal successors, (2073), 1487 states have internal predecessors, (2073), 180 states have call successors, (180), 112 states have call predecessors, (180), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2022-07-21 08:12:23,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2465 transitions. [2022-07-21 08:12:23,161 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2465 transitions. Word has length 65 [2022-07-21 08:12:23,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:23,161 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2465 transitions. [2022-07-21 08:12:23,162 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 08:12:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2465 transitions. [2022-07-21 08:12:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:12:23,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:23,163 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 08:12:23,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:12:23,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:23,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2038334069, now seen corresponding path program 1 times [2022-07-21 08:12:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:23,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566187813] [2022-07-21 08:12:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:12:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:12:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:12:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:23,302 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 08:12:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:23,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566187813] [2022-07-21 08:12:23,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566187813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:23,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:23,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:12:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977729767] [2022-07-21 08:12:23,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:23,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:12:23,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:12:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:12:23,305 INFO L87 Difference]: Start difference. First operand 1771 states and 2465 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 08:12:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:24,476 INFO L93 Difference]: Finished difference Result 3299 states and 4544 transitions. [2022-07-21 08:12:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:12:24,476 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 08:12:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:24,485 INFO L225 Difference]: With dead ends: 3299 [2022-07-21 08:12:24,485 INFO L226 Difference]: Without dead ends: 1919 [2022-07-21 08:12:24,488 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 08:12:24,490 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 996 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:24,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 2983 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:12:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-07-21 08:12:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1811. [2022-07-21 08:12:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1495 states have (on average 1.4040133779264214) internal successors, (2099), 1519 states have internal predecessors, (2099), 180 states have call successors, (180), 112 states have call predecessors, (180), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2022-07-21 08:12:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2499 transitions. [2022-07-21 08:12:24,565 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2499 transitions. Word has length 66 [2022-07-21 08:12:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:24,566 INFO L495 AbstractCegarLoop]: Abstraction has 1811 states and 2499 transitions. [2022-07-21 08:12:24,566 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 08:12:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2499 transitions. [2022-07-21 08:12:24,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:12:24,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:24,568 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 08:12:24,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:12:24,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1227273929, now seen corresponding path program 1 times [2022-07-21 08:12:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:24,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247292770] [2022-07-21 08:12:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:24,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:12:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 08:12:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:12:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:24,676 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 08:12:24,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:24,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247292770] [2022-07-21 08:12:24,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247292770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:24,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:24,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:12:24,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678539592] [2022-07-21 08:12:24,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:24,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:12:24,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:24,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:12:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:12:24,679 INFO L87 Difference]: Start difference. First operand 1811 states and 2499 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 08:12:26,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:26,390 INFO L93 Difference]: Finished difference Result 5383 states and 7373 transitions. [2022-07-21 08:12:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:12:26,391 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 08:12:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:26,401 INFO L225 Difference]: With dead ends: 5383 [2022-07-21 08:12:26,401 INFO L226 Difference]: Without dead ends: 2202 [2022-07-21 08:12:26,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:12:26,411 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 3939 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3961 SdHoareTripleChecker+Valid, 3306 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:26,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3961 Valid, 3306 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [697 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:12:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-07-21 08:12:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2022. [2022-07-21 08:12:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1634 states have (on average 1.3616891064871481) internal successors, (2225), 1660 states have internal predecessors, (2225), 220 states have call successors, (220), 140 states have call predecessors, (220), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2022-07-21 08:12:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2711 transitions. [2022-07-21 08:12:26,501 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2711 transitions. Word has length 66 [2022-07-21 08:12:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:26,502 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2711 transitions. [2022-07-21 08:12:26,502 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 08:12:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2711 transitions. [2022-07-21 08:12:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:12:26,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:26,510 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 08:12:26,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:12:26,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:26,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:26,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1550661326, now seen corresponding path program 1 times [2022-07-21 08:12:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:26,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589708706] [2022-07-21 08:12:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:26,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:12:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:12:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:12:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:12:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:26,631 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 08:12:26,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589708706] [2022-07-21 08:12:26,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589708706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:26,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:26,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:12:26,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86367625] [2022-07-21 08:12:26,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:26,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:12:26,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:12:26,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:12:26,634 INFO L87 Difference]: Start difference. First operand 2022 states and 2711 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 08:12:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:27,769 INFO L93 Difference]: Finished difference Result 3847 states and 5113 transitions. [2022-07-21 08:12:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:12:27,769 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 08:12:27,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:27,778 INFO L225 Difference]: With dead ends: 3847 [2022-07-21 08:12:27,779 INFO L226 Difference]: Without dead ends: 2216 [2022-07-21 08:12:27,782 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 08:12:27,782 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 661 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:27,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 3274 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:12:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2022-07-21 08:12:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2082. [2022-07-21 08:12:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1682 states have (on average 1.3478002378121283) internal successors, (2267), 1708 states have internal predecessors, (2267), 220 states have call successors, (220), 140 states have call predecessors, (220), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2022-07-21 08:12:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2765 transitions. [2022-07-21 08:12:27,865 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2765 transitions. Word has length 91 [2022-07-21 08:12:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:27,866 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2765 transitions. [2022-07-21 08:12:27,866 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 08:12:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2765 transitions. [2022-07-21 08:12:27,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 08:12:27,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:27,868 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 08:12:27,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:12:27,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:27,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1106760652, now seen corresponding path program 1 times [2022-07-21 08:12:27,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:27,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373888799] [2022-07-21 08:12:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:12:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:12:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:12:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 08:12:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:27,962 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 08:12:27,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:27,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373888799] [2022-07-21 08:12:27,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373888799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:27,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:27,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318635721] [2022-07-21 08:12:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:27,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:27,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:27,966 INFO L87 Difference]: Start difference. First operand 2082 states and 2765 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 08:12:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:28,306 INFO L93 Difference]: Finished difference Result 3882 states and 5120 transitions. [2022-07-21 08:12:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:12:28,307 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 08:12:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:28,317 INFO L225 Difference]: With dead ends: 3882 [2022-07-21 08:12:28,317 INFO L226 Difference]: Without dead ends: 2192 [2022-07-21 08:12:28,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:12:28,322 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1655 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:28,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1709 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:12:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2022-07-21 08:12:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2082. [2022-07-21 08:12:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1682 states have (on average 1.3228299643281807) internal successors, (2225), 1708 states have internal predecessors, (2225), 220 states have call successors, (220), 140 states have call predecessors, (220), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2022-07-21 08:12:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2723 transitions. [2022-07-21 08:12:28,406 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2723 transitions. Word has length 91 [2022-07-21 08:12:28,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:28,407 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2723 transitions. [2022-07-21 08:12:28,407 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 08:12:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2723 transitions. [2022-07-21 08:12:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-21 08:12:28,409 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:28,409 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 08:12:28,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:12:28,409 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash -721573211, now seen corresponding path program 1 times [2022-07-21 08:12:28,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:28,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475365718] [2022-07-21 08:12:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:28,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:12:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:12:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:12:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 08:12:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:28,504 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 08:12:28,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:28,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475365718] [2022-07-21 08:12:28,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475365718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:28,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:28,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:12:28,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334353902] [2022-07-21 08:12:28,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:28,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:12:28,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:28,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:12:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:12:28,507 INFO L87 Difference]: Start difference. First operand 2082 states and 2723 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 08:12:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:29,972 INFO L93 Difference]: Finished difference Result 4891 states and 6302 transitions. [2022-07-21 08:12:29,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:12:29,972 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 08:12:29,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:29,986 INFO L225 Difference]: With dead ends: 4891 [2022-07-21 08:12:29,986 INFO L226 Difference]: Without dead ends: 2896 [2022-07-21 08:12:29,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-21 08:12:29,994 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 2107 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:29,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 2704 Invalid, 1900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:12:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2022-07-21 08:12:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2719. [2022-07-21 08:12:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2160 states have (on average 1.2819444444444446) internal successors, (2769), 2195 states have internal predecessors, (2769), 299 states have call successors, (299), 189 states have call predecessors, (299), 258 states have return successors, (414), 337 states have call predecessors, (414), 295 states have call successors, (414) [2022-07-21 08:12:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3482 transitions. [2022-07-21 08:12:30,112 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3482 transitions. Word has length 92 [2022-07-21 08:12:30,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:30,113 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3482 transitions. [2022-07-21 08:12:30,113 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 08:12:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3482 transitions. [2022-07-21 08:12:30,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-21 08:12:30,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:30,117 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 08:12:30,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:12:30,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:30,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:30,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2110123202, now seen corresponding path program 1 times [2022-07-21 08:12:30,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:30,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795279721] [2022-07-21 08:12:30,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:30,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:12:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:12:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:12:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 08:12:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:12:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 08:12:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:12:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 08:12:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:12:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:12:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:12:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 08:12:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 08:12:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:12:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 08:12:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-21 08:12:30,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:30,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795279721] [2022-07-21 08:12:30,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795279721] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:12:30,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857897192] [2022-07-21 08:12:30,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:30,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:12:30,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:12:30,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:12:30,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:12:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:30,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:12:30,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:12:30,648 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 08:12:30,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:12:30,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857897192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:30,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:12:30,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-21 08:12:30,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659437661] [2022-07-21 08:12:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:30,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:12:30,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:12:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:12:30,660 INFO L87 Difference]: Start difference. First operand 2719 states and 3482 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 08:12:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:30,793 INFO L93 Difference]: Finished difference Result 7014 states and 8763 transitions. [2022-07-21 08:12:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:12:30,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-21 08:12:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:30,854 INFO L225 Difference]: With dead ends: 7014 [2022-07-21 08:12:30,855 INFO L226 Difference]: Without dead ends: 4841 [2022-07-21 08:12:30,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:12:30,860 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 61 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:30,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1525 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:12:30,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2022-07-21 08:12:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4796. [2022-07-21 08:12:31,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 3773 states have (on average 1.2467532467532467) internal successors, (4704), 3836 states have internal predecessors, (4704), 532 states have call successors, (532), 370 states have call predecessors, (532), 489 states have return successors, (718), 592 states have call predecessors, (718), 528 states have call successors, (718) [2022-07-21 08:12:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5954 transitions. [2022-07-21 08:12:31,053 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5954 transitions. Word has length 163 [2022-07-21 08:12:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:31,054 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 5954 transitions. [2022-07-21 08:12:31,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 08:12:31,055 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5954 transitions. [2022-07-21 08:12:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:31,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:31,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:31,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:12:31,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 08:12:31,288 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -174258653, now seen corresponding path program 1 times [2022-07-21 08:12:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:31,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025557301] [2022-07-21 08:12:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:31,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:31,428 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 08:12:31,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:31,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025557301] [2022-07-21 08:12:31,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025557301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:31,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:31,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:12:31,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591782536] [2022-07-21 08:12:31,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:31,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:12:31,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:31,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:12:31,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:12:31,431 INFO L87 Difference]: Start difference. First operand 4796 states and 5954 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 08:12:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:33,261 INFO L93 Difference]: Finished difference Result 5314 states and 6794 transitions. [2022-07-21 08:12:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:12:33,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:33,282 INFO L225 Difference]: With dead ends: 5314 [2022-07-21 08:12:33,282 INFO L226 Difference]: Without dead ends: 4938 [2022-07-21 08:12:33,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:12:33,286 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1150 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:33,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 1400 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:12:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2022-07-21 08:12:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4796. [2022-07-21 08:12:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 3773 states have (on average 1.2464882056718791) internal successors, (4703), 3836 states have internal predecessors, (4703), 532 states have call successors, (532), 370 states have call predecessors, (532), 489 states have return successors, (718), 592 states have call predecessors, (718), 528 states have call successors, (718) [2022-07-21 08:12:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5953 transitions. [2022-07-21 08:12:33,633 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5953 transitions. Word has length 179 [2022-07-21 08:12:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:33,634 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 5953 transitions. [2022-07-21 08:12:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 08:12:33,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5953 transitions. [2022-07-21 08:12:33,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:33,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:33,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:33,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:12:33,639 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:33,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:33,640 INFO L85 PathProgramCache]: Analyzing trace with hash -822851423, now seen corresponding path program 1 times [2022-07-21 08:12:33,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:33,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030287863] [2022-07-21 08:12:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:33,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:33,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:33,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:33,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:33,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:33,794 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 08:12:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:33,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030287863] [2022-07-21 08:12:33,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030287863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:33,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:33,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:12:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092598682] [2022-07-21 08:12:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:12:33,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:12:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:12:33,796 INFO L87 Difference]: Start difference. First operand 4796 states and 5953 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 08:12:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:35,531 INFO L93 Difference]: Finished difference Result 5306 states and 6777 transitions. [2022-07-21 08:12:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:12:35,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:35,559 INFO L225 Difference]: With dead ends: 5306 [2022-07-21 08:12:35,559 INFO L226 Difference]: Without dead ends: 4938 [2022-07-21 08:12:35,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:12:35,564 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 1141 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:35,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1398 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:12:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2022-07-21 08:12:35,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4796. [2022-07-21 08:12:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 3773 states have (on average 1.2462231645905115) internal successors, (4702), 3836 states have internal predecessors, (4702), 532 states have call successors, (532), 370 states have call predecessors, (532), 489 states have return successors, (718), 592 states have call predecessors, (718), 528 states have call successors, (718) [2022-07-21 08:12:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5952 transitions. [2022-07-21 08:12:35,898 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5952 transitions. Word has length 179 [2022-07-21 08:12:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:35,898 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 5952 transitions. [2022-07-21 08:12:35,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 08:12:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5952 transitions. [2022-07-21 08:12:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:35,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:35,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:35,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:12:35,905 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:35,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1321408225, now seen corresponding path program 1 times [2022-07-21 08:12:35,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:35,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607000767] [2022-07-21 08:12:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:36,102 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 08:12:36,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:36,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607000767] [2022-07-21 08:12:36,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607000767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:36,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:36,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:12:36,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496838166] [2022-07-21 08:12:36,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:36,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:12:36,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:12:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:12:36,105 INFO L87 Difference]: Start difference. First operand 4796 states and 5952 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 08:12:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:38,931 INFO L93 Difference]: Finished difference Result 5822 states and 7615 transitions. [2022-07-21 08:12:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:12:38,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:38,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:38,949 INFO L225 Difference]: With dead ends: 5822 [2022-07-21 08:12:38,950 INFO L226 Difference]: Without dead ends: 5460 [2022-07-21 08:12:38,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:12:38,954 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1805 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:38,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 1988 Invalid, 2305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 08:12:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-07-21 08:12:39,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5175. [2022-07-21 08:12:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 4124 states have (on average 1.2764306498545102) internal successors, (5264), 4188 states have internal predecessors, (5264), 553 states have call successors, (553), 376 states have call predecessors, (553), 496 states have return successors, (742), 613 states have call predecessors, (742), 549 states have call successors, (742) [2022-07-21 08:12:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 6559 transitions. [2022-07-21 08:12:39,296 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 6559 transitions. Word has length 179 [2022-07-21 08:12:39,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:39,297 INFO L495 AbstractCegarLoop]: Abstraction has 5175 states and 6559 transitions. [2022-07-21 08:12:39,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 08:12:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 6559 transitions. [2022-07-21 08:12:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:39,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:39,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:39,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:12:39,302 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:39,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1587819291, now seen corresponding path program 1 times [2022-07-21 08:12:39,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:39,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604585106] [2022-07-21 08:12:39,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:39,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:39,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:39,457 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 08:12:39,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:39,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604585106] [2022-07-21 08:12:39,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604585106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:39,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:39,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446174553] [2022-07-21 08:12:39,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:39,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:39,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:39,460 INFO L87 Difference]: Start difference. First operand 5175 states and 6559 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:42,933 INFO L93 Difference]: Finished difference Result 6743 states and 9107 transitions. [2022-07-21 08:12:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:12:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:42,956 INFO L225 Difference]: With dead ends: 6743 [2022-07-21 08:12:42,957 INFO L226 Difference]: Without dead ends: 6002 [2022-07-21 08:12:42,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:12:42,963 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1836 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 3350 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:42,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 3305 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3350 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 08:12:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2022-07-21 08:12:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5528. [2022-07-21 08:12:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 4449 states have (on average 1.2978197347718587) internal successors, (5774), 4514 states have internal predecessors, (5774), 574 states have call successors, (574), 382 states have call predecessors, (574), 503 states have return successors, (765), 635 states have call predecessors, (765), 570 states have call successors, (765) [2022-07-21 08:12:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 7113 transitions. [2022-07-21 08:12:43,339 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 7113 transitions. Word has length 179 [2022-07-21 08:12:43,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:43,340 INFO L495 AbstractCegarLoop]: Abstraction has 5528 states and 7113 transitions. [2022-07-21 08:12:43,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:43,340 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 7113 transitions. [2022-07-21 08:12:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:43,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:43,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:43,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:12:43,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:43,345 INFO L85 PathProgramCache]: Analyzing trace with hash 976550233, now seen corresponding path program 1 times [2022-07-21 08:12:43,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:43,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027958539] [2022-07-21 08:12:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:43,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:43,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:43,508 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 08:12:43,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027958539] [2022-07-21 08:12:43,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027958539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:43,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:43,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:43,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683920796] [2022-07-21 08:12:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:43,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:43,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:43,513 INFO L87 Difference]: Start difference. First operand 5528 states and 7113 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:45,861 INFO L93 Difference]: Finished difference Result 7112 states and 9699 transitions. [2022-07-21 08:12:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:12:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:45,886 INFO L225 Difference]: With dead ends: 7112 [2022-07-21 08:12:45,886 INFO L226 Difference]: Without dead ends: 6018 [2022-07-21 08:12:45,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:12:45,893 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1366 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:45,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 1971 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:12:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2022-07-21 08:12:46,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 5528. [2022-07-21 08:12:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 4449 states have (on average 1.2971454259384132) internal successors, (5771), 4514 states have internal predecessors, (5771), 574 states have call successors, (574), 382 states have call predecessors, (574), 503 states have return successors, (765), 635 states have call predecessors, (765), 570 states have call successors, (765) [2022-07-21 08:12:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 7110 transitions. [2022-07-21 08:12:46,230 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 7110 transitions. Word has length 179 [2022-07-21 08:12:46,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:46,230 INFO L495 AbstractCegarLoop]: Abstraction has 5528 states and 7110 transitions. [2022-07-21 08:12:46,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 7110 transitions. [2022-07-21 08:12:46,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:46,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:46,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:46,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:12:46,236 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:46,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:46,236 INFO L85 PathProgramCache]: Analyzing trace with hash -428641445, now seen corresponding path program 1 times [2022-07-21 08:12:46,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:46,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662155256] [2022-07-21 08:12:46,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:46,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:46,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:46,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:46,378 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 08:12:46,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:46,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662155256] [2022-07-21 08:12:46,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662155256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:46,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:46,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:46,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083357153] [2022-07-21 08:12:46,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:46,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:46,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:46,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:46,380 INFO L87 Difference]: Start difference. First operand 5528 states and 7110 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:48,482 INFO L93 Difference]: Finished difference Result 7108 states and 9682 transitions. [2022-07-21 08:12:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:12:48,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:48,497 INFO L225 Difference]: With dead ends: 7108 [2022-07-21 08:12:48,498 INFO L226 Difference]: Without dead ends: 6014 [2022-07-21 08:12:48,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:12:48,503 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 1364 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:48,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 1967 Invalid, 1753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:12:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-07-21 08:12:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5528. [2022-07-21 08:12:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 4449 states have (on average 1.2964711171049674) internal successors, (5768), 4514 states have internal predecessors, (5768), 574 states have call successors, (574), 382 states have call predecessors, (574), 503 states have return successors, (765), 635 states have call predecessors, (765), 570 states have call successors, (765) [2022-07-21 08:12:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 7107 transitions. [2022-07-21 08:12:48,809 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 7107 transitions. Word has length 179 [2022-07-21 08:12:48,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:48,809 INFO L495 AbstractCegarLoop]: Abstraction has 5528 states and 7107 transitions. [2022-07-21 08:12:48,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 7107 transitions. [2022-07-21 08:12:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:48,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:48,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:48,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:12:48,814 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:48,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1465692441, now seen corresponding path program 1 times [2022-07-21 08:12:48,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:48,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297235727] [2022-07-21 08:12:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:48,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:48,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:48,969 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 08:12:48,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:48,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297235727] [2022-07-21 08:12:48,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297235727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:48,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:48,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160005351] [2022-07-21 08:12:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:48,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:48,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:48,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:48,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:48,971 INFO L87 Difference]: Start difference. First operand 5528 states and 7107 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:52,246 INFO L93 Difference]: Finished difference Result 8091 states and 11237 transitions. [2022-07-21 08:12:52,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:12:52,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:52,268 INFO L225 Difference]: With dead ends: 8091 [2022-07-21 08:12:52,269 INFO L226 Difference]: Without dead ends: 6997 [2022-07-21 08:12:52,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:12:52,276 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 1818 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 3292 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 3286 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:52,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1849 Valid, 3286 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3292 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 08:12:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2022-07-21 08:12:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 6243. [2022-07-21 08:12:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6243 states, 5108 states have (on average 1.3306577916992952) internal successors, (6797), 5175 states have internal predecessors, (6797), 616 states have call successors, (616), 394 states have call predecessors, (616), 517 states have return successors, (815), 679 states have call predecessors, (815), 612 states have call successors, (815) [2022-07-21 08:12:52,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6243 states to 6243 states and 8228 transitions. [2022-07-21 08:12:52,666 INFO L78 Accepts]: Start accepts. Automaton has 6243 states and 8228 transitions. Word has length 179 [2022-07-21 08:12:52,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:52,667 INFO L495 AbstractCegarLoop]: Abstraction has 6243 states and 8228 transitions. [2022-07-21 08:12:52,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:52,667 INFO L276 IsEmpty]: Start isEmpty. Operand 6243 states and 8228 transitions. [2022-07-21 08:12:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:52,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:52,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:12:52,674 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1382693989, now seen corresponding path program 1 times [2022-07-21 08:12:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:52,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246329458] [2022-07-21 08:12:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:52,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:52,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:52,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:52,829 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 08:12:52,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:52,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246329458] [2022-07-21 08:12:52,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246329458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:52,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:52,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:52,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358064747] [2022-07-21 08:12:52,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:52,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:52,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:52,830 INFO L87 Difference]: Start difference. First operand 6243 states and 8228 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:54,716 INFO L93 Difference]: Finished difference Result 8792 states and 12345 transitions. [2022-07-21 08:12:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:12:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:54,738 INFO L225 Difference]: With dead ends: 8792 [2022-07-21 08:12:54,738 INFO L226 Difference]: Without dead ends: 6983 [2022-07-21 08:12:54,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:12:54,746 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1363 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 1960 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:54,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 1960 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:12:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2022-07-21 08:12:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 6243. [2022-07-21 08:12:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6243 states, 5108 states have (on average 1.3296789350039153) internal successors, (6792), 5175 states have internal predecessors, (6792), 616 states have call successors, (616), 394 states have call predecessors, (616), 517 states have return successors, (815), 679 states have call predecessors, (815), 612 states have call successors, (815) [2022-07-21 08:12:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6243 states to 6243 states and 8223 transitions. [2022-07-21 08:12:55,134 INFO L78 Accepts]: Start accepts. Automaton has 6243 states and 8223 transitions. Word has length 179 [2022-07-21 08:12:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:55,135 INFO L495 AbstractCegarLoop]: Abstraction has 6243 states and 8223 transitions. [2022-07-21 08:12:55,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6243 states and 8223 transitions. [2022-07-21 08:12:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:55,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:55,140 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:55,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:12:55,140 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:55,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:55,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1989105881, now seen corresponding path program 1 times [2022-07-21 08:12:55,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:55,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060111470] [2022-07-21 08:12:55,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:55,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:55,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:55,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:55,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:55,299 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 08:12:55,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:55,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060111470] [2022-07-21 08:12:55,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060111470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:55,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:55,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:55,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592118801] [2022-07-21 08:12:55,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:55,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:55,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:55,302 INFO L87 Difference]: Start difference. First operand 6243 states and 8223 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:12:58,710 INFO L93 Difference]: Finished difference Result 10702 states and 15350 transitions. [2022-07-21 08:12:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:12:58,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:12:58,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:12:58,738 INFO L225 Difference]: With dead ends: 10702 [2022-07-21 08:12:58,739 INFO L226 Difference]: Without dead ends: 8893 [2022-07-21 08:12:58,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:12:58,748 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1909 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 2927 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 2927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:12:58,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 2347 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 2927 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 08:12:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2022-07-21 08:12:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 7677. [2022-07-21 08:12:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.376049766718507) internal successors, (8848), 6501 states have internal predecessors, (8848), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-07-21 08:12:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10469 transitions. [2022-07-21 08:12:59,389 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10469 transitions. Word has length 179 [2022-07-21 08:12:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:12:59,389 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10469 transitions. [2022-07-21 08:12:59,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:12:59,389 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10469 transitions. [2022-07-21 08:12:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:12:59,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:12:59,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:59,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:12:59,396 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:12:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:12:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1919999013, now seen corresponding path program 1 times [2022-07-21 08:12:59,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:12:59,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223756155] [2022-07-21 08:12:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:12:59,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:12:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:12:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:12:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:59,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:12:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:12:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:12:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:12:59,529 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 08:12:59,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:12:59,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223756155] [2022-07-21 08:12:59,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223756155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:12:59,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:12:59,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:12:59,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142279699] [2022-07-21 08:12:59,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:12:59,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:12:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:12:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:12:59,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:12:59,532 INFO L87 Difference]: Start difference. First operand 7677 states and 10469 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:01,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:01,347 INFO L93 Difference]: Finished difference Result 12156 states and 17664 transitions. [2022-07-21 08:13:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:13:01,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:01,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:01,375 INFO L225 Difference]: With dead ends: 12156 [2022-07-21 08:13:01,376 INFO L226 Difference]: Without dead ends: 8913 [2022-07-21 08:13:01,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:13:01,388 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 1587 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:01,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 1693 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1412 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:13:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2022-07-21 08:13:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 7677. [2022-07-21 08:13:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.3746500777604977) internal successors, (8839), 6501 states have internal predecessors, (8839), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-07-21 08:13:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10460 transitions. [2022-07-21 08:13:01,980 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10460 transitions. Word has length 179 [2022-07-21 08:13:01,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:01,980 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10460 transitions. [2022-07-21 08:13:01,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10460 transitions. [2022-07-21 08:13:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:01,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:01,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:01,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:13:01,986 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:01,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2110320793, now seen corresponding path program 1 times [2022-07-21 08:13:01,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:01,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061156321] [2022-07-21 08:13:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:01,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:02,125 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 08:13:02,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:02,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061156321] [2022-07-21 08:13:02,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061156321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:02,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:02,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:02,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357325678] [2022-07-21 08:13:02,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:02,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:02,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:02,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:02,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:02,127 INFO L87 Difference]: Start difference. First operand 7677 states and 10460 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:03,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:03,955 INFO L93 Difference]: Finished difference Result 12136 states and 17597 transitions. [2022-07-21 08:13:03,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:13:03,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:03,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:03,985 INFO L225 Difference]: With dead ends: 12136 [2022-07-21 08:13:03,986 INFO L226 Difference]: Without dead ends: 8893 [2022-07-21 08:13:03,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:13:03,998 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 1583 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:03,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 1687 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:13:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2022-07-21 08:13:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 7677. [2022-07-21 08:13:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.3732503888024883) internal successors, (8830), 6501 states have internal predecessors, (8830), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-07-21 08:13:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10451 transitions. [2022-07-21 08:13:04,599 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10451 transitions. Word has length 179 [2022-07-21 08:13:04,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:04,599 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10451 transitions. [2022-07-21 08:13:04,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:04,600 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10451 transitions. [2022-07-21 08:13:04,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:04,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:04,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:04,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:13:04,605 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:04,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:04,605 INFO L85 PathProgramCache]: Analyzing trace with hash 787141847, now seen corresponding path program 1 times [2022-07-21 08:13:04,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:04,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833459912] [2022-07-21 08:13:04,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:04,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:04,746 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 08:13:04,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:04,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833459912] [2022-07-21 08:13:04,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833459912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:04,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:04,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272229829] [2022-07-21 08:13:04,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:04,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:04,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:04,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:04,749 INFO L87 Difference]: Start difference. First operand 7677 states and 10451 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:06,845 INFO L93 Difference]: Finished difference Result 12126 states and 17550 transitions. [2022-07-21 08:13:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:13:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:06,872 INFO L225 Difference]: With dead ends: 12126 [2022-07-21 08:13:06,872 INFO L226 Difference]: Without dead ends: 8883 [2022-07-21 08:13:06,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:13:06,884 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 1359 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:06,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1941 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:13:06,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-07-21 08:13:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 7677. [2022-07-21 08:13:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.371850699844479) internal successors, (8821), 6501 states have internal predecessors, (8821), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-07-21 08:13:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10442 transitions. [2022-07-21 08:13:07,549 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10442 transitions. Word has length 179 [2022-07-21 08:13:07,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:07,550 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10442 transitions. [2022-07-21 08:13:07,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10442 transitions. [2022-07-21 08:13:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:07,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:07,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:07,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:13:07,556 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1610845991, now seen corresponding path program 1 times [2022-07-21 08:13:07,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:07,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080939237] [2022-07-21 08:13:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:07,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:07,695 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 08:13:07,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:07,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080939237] [2022-07-21 08:13:07,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080939237] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:07,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:07,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206609386] [2022-07-21 08:13:07,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:07,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:07,698 INFO L87 Difference]: Start difference. First operand 7677 states and 10442 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:11,509 INFO L93 Difference]: Finished difference Result 15894 states and 23426 transitions. [2022-07-21 08:13:11,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:13:11,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:11,545 INFO L225 Difference]: With dead ends: 15894 [2022-07-21 08:13:11,545 INFO L226 Difference]: Without dead ends: 12651 [2022-07-21 08:13:11,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:13:11,559 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1787 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:11,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 3246 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 08:13:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12651 states. [2022-07-21 08:13:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12651 to 10586. [2022-07-21 08:13:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10586 states, 9115 states have (on average 1.422161272627537) internal successors, (12963), 9194 states have internal predecessors, (12963), 868 states have call successors, (868), 466 states have call predecessors, (868), 601 states have return successors, (1151), 943 states have call predecessors, (1151), 864 states have call successors, (1151) [2022-07-21 08:13:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10586 states to 10586 states and 14982 transitions. [2022-07-21 08:13:12,526 INFO L78 Accepts]: Start accepts. Automaton has 10586 states and 14982 transitions. Word has length 179 [2022-07-21 08:13:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:12,526 INFO L495 AbstractCegarLoop]: Abstraction has 10586 states and 14982 transitions. [2022-07-21 08:13:12,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 10586 states and 14982 transitions. [2022-07-21 08:13:12,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:12,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:12,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:12,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:13:12,532 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:12,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1272558441, now seen corresponding path program 1 times [2022-07-21 08:13:12,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:12,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086528466] [2022-07-21 08:13:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:12,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:12,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:12,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:12,677 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 08:13:12,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:12,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086528466] [2022-07-21 08:13:12,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086528466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:12,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:12,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:12,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070907327] [2022-07-21 08:13:12,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:12,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:12,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:12,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:12,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:12,681 INFO L87 Difference]: Start difference. First operand 10586 states and 14982 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:15,218 INFO L93 Difference]: Finished difference Result 18860 states and 28153 transitions. [2022-07-21 08:13:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:13:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:15,250 INFO L225 Difference]: With dead ends: 18860 [2022-07-21 08:13:15,250 INFO L226 Difference]: Without dead ends: 12708 [2022-07-21 08:13:15,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:13:15,270 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1356 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:15,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 1932 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:13:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12708 states. [2022-07-21 08:13:16,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12708 to 10586. [2022-07-21 08:13:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10586 states, 9115 states have (on average 1.4202962150301701) internal successors, (12946), 9194 states have internal predecessors, (12946), 868 states have call successors, (868), 466 states have call predecessors, (868), 601 states have return successors, (1151), 943 states have call predecessors, (1151), 864 states have call successors, (1151) [2022-07-21 08:13:16,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10586 states to 10586 states and 14965 transitions. [2022-07-21 08:13:16,113 INFO L78 Accepts]: Start accepts. Automaton has 10586 states and 14965 transitions. Word has length 179 [2022-07-21 08:13:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:16,113 INFO L495 AbstractCegarLoop]: Abstraction has 10586 states and 14965 transitions. [2022-07-21 08:13:16,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10586 states and 14965 transitions. [2022-07-21 08:13:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:16,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:16,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:16,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:13:16,117 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash -846003943, now seen corresponding path program 1 times [2022-07-21 08:13:16,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:16,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343538938] [2022-07-21 08:13:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:16,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:16,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:16,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:16,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:16,251 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 08:13:16,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:16,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343538938] [2022-07-21 08:13:16,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343538938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:16,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:16,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:16,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659719558] [2022-07-21 08:13:16,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:16,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:16,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:16,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:16,253 INFO L87 Difference]: Start difference. First operand 10586 states and 14965 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:21,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:21,871 INFO L93 Difference]: Finished difference Result 28983 states and 43886 transitions. [2022-07-21 08:13:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:13:21,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:21,921 INFO L225 Difference]: With dead ends: 28983 [2022-07-21 08:13:21,921 INFO L226 Difference]: Without dead ends: 22831 [2022-07-21 08:13:21,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:13:21,939 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 2225 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:21,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 3221 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 08:13:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22831 states. [2022-07-21 08:13:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22831 to 16252. [2022-07-21 08:13:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16252 states, 14349 states have (on average 1.4622621785490277) internal successors, (20982), 14444 states have internal predecessors, (20982), 1188 states have call successors, (1188), 562 states have call predecessors, (1188), 713 states have return successors, (1649), 1279 states have call predecessors, (1649), 1184 states have call successors, (1649) [2022-07-21 08:13:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 23819 transitions. [2022-07-21 08:13:23,347 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 23819 transitions. Word has length 179 [2022-07-21 08:13:23,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:23,347 INFO L495 AbstractCegarLoop]: Abstraction has 16252 states and 23819 transitions. [2022-07-21 08:13:23,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 23819 transitions. [2022-07-21 08:13:23,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:23,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:23,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:23,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:13:23,354 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:23,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1386433449, now seen corresponding path program 1 times [2022-07-21 08:13:23,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:23,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777771134] [2022-07-21 08:13:23,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:23,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:23,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:23,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:23,493 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 08:13:23,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:23,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777771134] [2022-07-21 08:13:23,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777771134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:23,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:23,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:23,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251619886] [2022-07-21 08:13:23,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:23,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:23,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:23,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:23,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:23,495 INFO L87 Difference]: Start difference. First operand 16252 states and 23819 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:31,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:31,896 INFO L93 Difference]: Finished difference Result 51607 states and 79510 transitions. [2022-07-21 08:13:31,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:13:31,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:31,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:32,018 INFO L225 Difference]: With dead ends: 51607 [2022-07-21 08:13:32,018 INFO L226 Difference]: Without dead ends: 39789 [2022-07-21 08:13:32,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:13:32,061 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 1964 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3361 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1994 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:32,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1994 Valid, 2486 Invalid, 3538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 3361 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 08:13:32,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39789 states. [2022-07-21 08:13:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39789 to 27693. [2022-07-21 08:13:34,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27693 states, 24942 states have (on average 1.494988373025419) internal successors, (37288), 25069 states have internal predecessors, (37288), 1812 states have call successors, (1812), 754 states have call predecessors, (1812), 937 states have return successors, (2791), 1935 states have call predecessors, (2791), 1808 states have call successors, (2791) [2022-07-21 08:13:35,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27693 states to 27693 states and 41891 transitions. [2022-07-21 08:13:35,045 INFO L78 Accepts]: Start accepts. Automaton has 27693 states and 41891 transitions. Word has length 179 [2022-07-21 08:13:35,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:35,046 INFO L495 AbstractCegarLoop]: Abstraction has 27693 states and 41891 transitions. [2022-07-21 08:13:35,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 27693 states and 41891 transitions. [2022-07-21 08:13:35,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:35,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:35,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:35,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:13:35,060 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:35,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1542413991, now seen corresponding path program 1 times [2022-07-21 08:13:35,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:35,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233040853] [2022-07-21 08:13:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:35,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:35,224 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 08:13:35,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:35,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233040853] [2022-07-21 08:13:35,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233040853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:35,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:35,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:35,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339048256] [2022-07-21 08:13:35,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:35,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:35,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:35,226 INFO L87 Difference]: Start difference. First operand 27693 states and 41891 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:48,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:13:48,975 INFO L93 Difference]: Finished difference Result 96614 states and 151100 transitions. [2022-07-21 08:13:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:13:48,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:13:48,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:13:49,210 INFO L225 Difference]: With dead ends: 96614 [2022-07-21 08:13:49,210 INFO L226 Difference]: Without dead ends: 73355 [2022-07-21 08:13:49,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:13:49,279 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 2149 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 3134 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2193 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:13:49,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2193 Valid, 3213 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3134 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 08:13:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73355 states. [2022-07-21 08:13:54,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73355 to 50542. [2022-07-21 08:13:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50542 states, 46127 states have (on average 1.516031825178312) internal successors, (69930), 46318 states have internal predecessors, (69930), 3028 states have call successors, (3028), 1138 states have call predecessors, (3028), 1385 states have return successors, (5529), 3215 states have call predecessors, (5529), 3024 states have call successors, (5529) [2022-07-21 08:13:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50542 states to 50542 states and 78487 transitions. [2022-07-21 08:13:54,887 INFO L78 Accepts]: Start accepts. Automaton has 50542 states and 78487 transitions. Word has length 179 [2022-07-21 08:13:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:13:54,888 INFO L495 AbstractCegarLoop]: Abstraction has 50542 states and 78487 transitions. [2022-07-21 08:13:54,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:13:54,888 INFO L276 IsEmpty]: Start isEmpty. Operand 50542 states and 78487 transitions. [2022-07-21 08:13:54,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:13:54,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:13:54,908 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:54,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:13:54,908 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:13:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:13:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1131803625, now seen corresponding path program 1 times [2022-07-21 08:13:54,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:13:54,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764870780] [2022-07-21 08:13:54,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:13:54,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:13:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:13:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:54,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:13:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:13:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:13:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:13:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:13:55,064 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 08:13:55,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:13:55,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764870780] [2022-07-21 08:13:55,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764870780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:13:55,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:13:55,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:13:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173091682] [2022-07-21 08:13:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:13:55,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:13:55,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:13:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:13:55,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:13:55,066 INFO L87 Difference]: Start difference. First operand 50542 states and 78487 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:14:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:14:18,649 INFO L93 Difference]: Finished difference Result 183523 states and 291518 transitions. [2022-07-21 08:14:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:14:18,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2022-07-21 08:14:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:14:19,292 INFO L225 Difference]: With dead ends: 183523 [2022-07-21 08:14:19,292 INFO L226 Difference]: Without dead ends: 137415 [2022-07-21 08:14:19,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:14:19,404 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 1848 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 3525 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 3661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:14:19,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1878 Valid, 3328 Invalid, 3661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3525 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 08:14:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137415 states. [2022-07-21 08:14:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137415 to 96304. [2022-07-21 08:14:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96304 states, 88625 states have (on average 1.5292976022566995) internal successors, (135534), 88944 states have internal predecessors, (135534), 5396 states have call successors, (5396), 1906 states have call predecessors, (5396), 2281 states have return successors, (12399), 5711 states have call predecessors, (12399), 5392 states have call successors, (12399) [2022-07-21 08:14:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96304 states to 96304 states and 153329 transitions. [2022-07-21 08:14:30,149 INFO L78 Accepts]: Start accepts. Automaton has 96304 states and 153329 transitions. Word has length 179 [2022-07-21 08:14:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:14:30,150 INFO L495 AbstractCegarLoop]: Abstraction has 96304 states and 153329 transitions. [2022-07-21 08:14:30,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 08:14:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 96304 states and 153329 transitions. [2022-07-21 08:14:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 08:14:30,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:14:30,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:30,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:14:30,181 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:14:30,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:14:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1027280469, now seen corresponding path program 1 times [2022-07-21 08:14:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:14:30,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805727657] [2022-07-21 08:14:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:14:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:14:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:14:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:30,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 08:14:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:30,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 08:14:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 08:14:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 08:14:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:14:30,318 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 08:14:30,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:14:30,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805727657] [2022-07-21 08:14:30,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805727657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:14:30,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:14:30,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:14:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332168978] [2022-07-21 08:14:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:14:30,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:14:30,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:14:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:14:30,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:14:30,321 INFO L87 Difference]: Start difference. First operand 96304 states and 153329 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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)