./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.09.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:16:20,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:16:20,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:16:20,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:16:20,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:16:20,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:16:20,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:16:20,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:16:20,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:16:20,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:16:20,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:16:20,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:16:20,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:16:20,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:16:20,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:16:20,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:16:20,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:16:20,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:16:20,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:16:20,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:16:20,765 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:16:20,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:16:20,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:16:20,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:16:20,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:16:20,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:16:20,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:16:20,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:16:20,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:16:20,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:16:20,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:16:20,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:16:20,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:16:20,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:16:20,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:16:20,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:16:20,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:16:20,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:16:20,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:16:20,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:16:20,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:16:20,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:16:20,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:16:20,809 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:16:20,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:16:20,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:16:20,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:16:20,811 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:16:20,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:16:20,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:16:20,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:16:20,812 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:16:20,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:16:20,812 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:16:20,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:16:20,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:16:20,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:16:20,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:16:20,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:16:20,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:16:20,813 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:16:20,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:16:20,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:16:20,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:16:20,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:16:20,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:16:20,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:16:20,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:16:20,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:16:20,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:16:20,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:16:20,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:16:20,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:16:20,816 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:16:20,816 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:16:20,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:16:20,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 [2022-07-13 21:16:20,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:16:21,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:16:21,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:16:21,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:16:21,009 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:16:21,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-07-13 21:16:21,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94c3f6a5/b2334f7b86c1490987160b180f3f61d6/FLAGf41b2e1e0 [2022-07-13 21:16:21,369 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:16:21,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-07-13 21:16:21,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94c3f6a5/b2334f7b86c1490987160b180f3f61d6/FLAGf41b2e1e0 [2022-07-13 21:16:21,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d94c3f6a5/b2334f7b86c1490987160b180f3f61d6 [2022-07-13 21:16:21,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:16:21,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:16:21,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:16:21,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:16:21,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:16:21,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:16:21" (1/1) ... [2022-07-13 21:16:21,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0816d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:21, skipping insertion in model container [2022-07-13 21:16:21,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:16:21" (1/1) ... [2022-07-13 21:16:21,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:16:21,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:16:21,940 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.09.cil-1.c[911,924] [2022-07-13 21:16:21,978 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.09.cil-1.c[8416,8429] [2022-07-13 21:16:22,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:16:22,046 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:16:22,053 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.09.cil-1.c[911,924] [2022-07-13 21:16:22,066 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.09.cil-1.c[8416,8429] [2022-07-13 21:16:22,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:16:22,109 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:16:22,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22 WrapperNode [2022-07-13 21:16:22,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:16:22,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:16:22,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:16:22,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:16:22,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,139 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,164 INFO L137 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 904 [2022-07-13 21:16:22,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:16:22,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:16:22,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:16:22,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:16:22,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:16:22,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:16:22,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:16:22,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:16:22,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (1/1) ... [2022-07-13 21:16:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:16:22,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:16:22,255 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) [2022-07-13 21:16:22,257 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 [2022-07-13 21:16:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:16:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:16:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:16:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:16:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:16:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:16:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:16:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:16:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:16:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:16:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:16:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:16:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:16:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:16:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:16:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:16:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:16:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:16:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:16:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:16:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:16:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:16:22,289 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:16:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:16:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:16:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:16:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:16:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:16:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:16:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:16:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:16:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:16:22,371 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:16:22,372 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:16:22,890 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-13 21:16:22,890 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; [2022-07-13 21:16:22,930 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:16:22,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:16:22,937 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 21:16:22,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:16:22 BoogieIcfgContainer [2022-07-13 21:16:22,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:16:22,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:16:22,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:16:22,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:16:22,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:16:21" (1/3) ... [2022-07-13 21:16:22,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cf6660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:16:22, skipping insertion in model container [2022-07-13 21:16:22,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:16:22" (2/3) ... [2022-07-13 21:16:22,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26cf6660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:16:22, skipping insertion in model container [2022-07-13 21:16:22,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:16:22" (3/3) ... [2022-07-13 21:16:22,945 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-07-13 21:16:22,954 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:16:22,954 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:16:23,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:16:23,017 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@2546210f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e58d81a [2022-07-13 21:16:23,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:16:23,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 368 states have (on average 1.625) internal successors, (598), 374 states have internal predecessors, (598), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-13 21:16:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:16:23,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:23,034 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] [2022-07-13 21:16:23,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1177923463, now seen corresponding path program 1 times [2022-07-13 21:16:23,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:23,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774603478] [2022-07-13 21:16:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:23,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:16:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:16:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:16:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:23,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:23,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774603478] [2022-07-13 21:16:23,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774603478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:23,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:23,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:16:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290308638] [2022-07-13 21:16:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:23,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:16:23,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:16:23,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:16:23,309 INFO L87 Difference]: Start difference. First operand has 424 states, 368 states have (on average 1.625) internal successors, (598), 374 states have internal predecessors, (598), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) 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) [2022-07-13 21:16:23,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:23,891 INFO L93 Difference]: Finished difference Result 842 states and 1340 transitions. [2022-07-13 21:16:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:16:23,893 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 [2022-07-13 21:16:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:23,909 INFO L225 Difference]: With dead ends: 842 [2022-07-13 21:16:23,909 INFO L226 Difference]: Without dead ends: 432 [2022-07-13 21:16:23,915 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 [2022-07-13 21:16:23,918 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 669 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:23,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1741 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:16:23,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-13 21:16:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 414. [2022-07-13 21:16:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 360 states have (on average 1.5361111111111112) internal successors, (553), 364 states have internal predecessors, (553), 39 states have call successors, (39), 14 states have call predecessors, (39), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-13 21:16:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 629 transitions. [2022-07-13 21:16:23,968 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 629 transitions. Word has length 65 [2022-07-13 21:16:23,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:23,969 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 629 transitions. [2022-07-13 21:16:23,969 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) [2022-07-13 21:16:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 629 transitions. [2022-07-13 21:16:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:16:23,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:23,971 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] [2022-07-13 21:16:23,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:16:23,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1137248713, now seen corresponding path program 1 times [2022-07-13 21:16:23,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:23,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441493952] [2022-07-13 21:16:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:16:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:16:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:16:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:24,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:24,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441493952] [2022-07-13 21:16:24,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441493952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:24,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:24,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:16:24,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332897956] [2022-07-13 21:16:24,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:24,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:16:24,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:24,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:16:24,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:16:24,077 INFO L87 Difference]: Start difference. First operand 414 states and 629 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) [2022-07-13 21:16:24,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:24,759 INFO L93 Difference]: Finished difference Result 669 states and 998 transitions. [2022-07-13 21:16:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:16:24,760 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 [2022-07-13 21:16:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:24,762 INFO L225 Difference]: With dead ends: 669 [2022-07-13 21:16:24,763 INFO L226 Difference]: Without dead ends: 565 [2022-07-13 21:16:24,763 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 [2022-07-13 21:16:24,764 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1394 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:24,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 1881 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:16:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-07-13 21:16:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 526. [2022-07-13 21:16:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 450 states have (on average 1.508888888888889) internal successors, (679), 456 states have internal predecessors, (679), 52 states have call successors, (52), 21 states have call predecessors, (52), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-13 21:16:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 786 transitions. [2022-07-13 21:16:24,793 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 786 transitions. Word has length 65 [2022-07-13 21:16:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:24,793 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 786 transitions. [2022-07-13 21:16:24,793 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) [2022-07-13 21:16:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 786 transitions. [2022-07-13 21:16:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:16:24,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:24,796 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] [2022-07-13 21:16:24,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:16:24,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1619378553, now seen corresponding path program 1 times [2022-07-13 21:16:24,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107421299] [2022-07-13 21:16:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:16:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:16:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:16:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:24,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:24,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:24,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107421299] [2022-07-13 21:16:24,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107421299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:24,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:24,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:16:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523951930] [2022-07-13 21:16:24,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:16:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:16:24,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:16:24,872 INFO L87 Difference]: Start difference. First operand 526 states and 786 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) [2022-07-13 21:16:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:25,754 INFO L93 Difference]: Finished difference Result 923 states and 1351 transitions. [2022-07-13 21:16:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:16:25,754 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 [2022-07-13 21:16:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:25,758 INFO L225 Difference]: With dead ends: 923 [2022-07-13 21:16:25,758 INFO L226 Difference]: Without dead ends: 714 [2022-07-13 21:16:25,762 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 [2022-07-13 21:16:25,764 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1216 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:25,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 2491 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:16:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-07-13 21:16:25,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 638. [2022-07-13 21:16:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 540 states have (on average 1.488888888888889) internal successors, (804), 548 states have internal predecessors, (804), 65 states have call successors, (65), 28 states have call predecessors, (65), 31 states have return successors, (76), 65 states have call predecessors, (76), 63 states have call successors, (76) [2022-07-13 21:16:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 945 transitions. [2022-07-13 21:16:25,802 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 945 transitions. Word has length 65 [2022-07-13 21:16:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:25,802 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 945 transitions. [2022-07-13 21:16:25,802 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) [2022-07-13 21:16:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 945 transitions. [2022-07-13 21:16:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:16:25,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:25,807 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] [2022-07-13 21:16:25,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:16:25,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 647002633, now seen corresponding path program 1 times [2022-07-13 21:16:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:25,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457824430] [2022-07-13 21:16:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:25,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:16:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:16:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:16:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:25,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:25,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457824430] [2022-07-13 21:16:25,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457824430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:25,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:25,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:16:25,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783903342] [2022-07-13 21:16:25,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:25,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:16:25,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:25,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:16:25,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:16:25,912 INFO L87 Difference]: Start difference. First operand 638 states and 945 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) [2022-07-13 21:16:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:27,467 INFO L93 Difference]: Finished difference Result 2184 states and 3142 transitions. [2022-07-13 21:16:27,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:16:27,468 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 [2022-07-13 21:16:27,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:27,475 INFO L225 Difference]: With dead ends: 2184 [2022-07-13 21:16:27,475 INFO L226 Difference]: Without dead ends: 1851 [2022-07-13 21:16:27,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:16:27,483 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 3313 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:27,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 2835 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:16:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2022-07-13 21:16:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1691. [2022-07-13 21:16:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1388 states have (on average 1.404899135446686) internal successors, (1950), 1411 states have internal predecessors, (1950), 175 states have call successors, (175), 111 states have call predecessors, (175), 126 states have return successors, (209), 171 states have call predecessors, (209), 173 states have call successors, (209) [2022-07-13 21:16:27,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2334 transitions. [2022-07-13 21:16:27,545 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2334 transitions. Word has length 65 [2022-07-13 21:16:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:27,545 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2334 transitions. [2022-07-13 21:16:27,545 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) [2022-07-13 21:16:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2334 transitions. [2022-07-13 21:16:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:16:27,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:27,546 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] [2022-07-13 21:16:27,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:16:27,546 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:27,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1861088182, now seen corresponding path program 1 times [2022-07-13 21:16:27,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:27,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099697948] [2022-07-13 21:16:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:27,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:16:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:16:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:16:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:27,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:27,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099697948] [2022-07-13 21:16:27,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099697948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:27,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:27,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:16:27,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36840041] [2022-07-13 21:16:27,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:27,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:16:27,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:16:27,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:16:27,652 INFO L87 Difference]: Start difference. First operand 1691 states and 2334 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) [2022-07-13 21:16:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:28,464 INFO L93 Difference]: Finished difference Result 3219 states and 4413 transitions. [2022-07-13 21:16:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:16:28,465 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 [2022-07-13 21:16:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:28,470 INFO L225 Difference]: With dead ends: 3219 [2022-07-13 21:16:28,471 INFO L226 Difference]: Without dead ends: 1839 [2022-07-13 21:16:28,473 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 [2022-07-13 21:16:28,473 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 546 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:28,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 2743 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:16:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-07-13 21:16:28,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1731. [2022-07-13 21:16:28,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1420 states have (on average 1.3915492957746478) internal successors, (1976), 1443 states have internal predecessors, (1976), 175 states have call successors, (175), 111 states have call predecessors, (175), 134 states have return successors, (217), 179 states have call predecessors, (217), 173 states have call successors, (217) [2022-07-13 21:16:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2368 transitions. [2022-07-13 21:16:28,535 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2368 transitions. Word has length 66 [2022-07-13 21:16:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:28,536 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2368 transitions. [2022-07-13 21:16:28,536 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) [2022-07-13 21:16:28,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2368 transitions. [2022-07-13 21:16:28,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:16:28,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:28,536 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] [2022-07-13 21:16:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:16:28,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:28,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1404519816, now seen corresponding path program 1 times [2022-07-13 21:16:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:28,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151034128] [2022-07-13 21:16:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:28,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:16:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:16:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:16:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:28,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151034128] [2022-07-13 21:16:28,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151034128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:28,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:28,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:16:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993602072] [2022-07-13 21:16:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:16:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:16:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:16:28,628 INFO L87 Difference]: Start difference. First operand 1731 states and 2368 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) [2022-07-13 21:16:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:30,029 INFO L93 Difference]: Finished difference Result 5303 states and 7242 transitions. [2022-07-13 21:16:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:16:30,029 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 [2022-07-13 21:16:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:30,036 INFO L225 Difference]: With dead ends: 5303 [2022-07-13 21:16:30,036 INFO L226 Difference]: Without dead ends: 2122 [2022-07-13 21:16:30,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:16:30,042 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 3425 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:30,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3443 Valid, 2856 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:16:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-07-13 21:16:30,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1942. [2022-07-13 21:16:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1559 states have (on average 1.3483001924310456) internal successors, (2102), 1584 states have internal predecessors, (2102), 215 states have call successors, (215), 139 states have call predecessors, (215), 166 states have return successors, (263), 221 states have call predecessors, (263), 213 states have call successors, (263) [2022-07-13 21:16:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2580 transitions. [2022-07-13 21:16:30,128 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2580 transitions. Word has length 66 [2022-07-13 21:16:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:30,129 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 2580 transitions. [2022-07-13 21:16:30,129 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) [2022-07-13 21:16:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2580 transitions. [2022-07-13 21:16:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:16:30,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:30,134 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] [2022-07-13 21:16:30,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:16:30,134 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:30,135 INFO L85 PathProgramCache]: Analyzing trace with hash -934912176, now seen corresponding path program 1 times [2022-07-13 21:16:30,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:30,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069317664] [2022-07-13 21:16:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:30,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:16:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:16:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:16:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:16:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:30,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:16:30,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:30,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069317664] [2022-07-13 21:16:30,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069317664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:30,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:30,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:16:30,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879259992] [2022-07-13 21:16:30,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:30,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:16:30,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:16:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:16:30,231 INFO L87 Difference]: Start difference. First operand 1942 states and 2580 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) [2022-07-13 21:16:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:31,064 INFO L93 Difference]: Finished difference Result 3767 states and 4982 transitions. [2022-07-13 21:16:31,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:16:31,064 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 [2022-07-13 21:16:31,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:31,072 INFO L225 Difference]: With dead ends: 3767 [2022-07-13 21:16:31,072 INFO L226 Difference]: Without dead ends: 2136 [2022-07-13 21:16:31,075 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 [2022-07-13 21:16:31,076 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 800 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:31,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2415 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:16:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2022-07-13 21:16:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2002. [2022-07-13 21:16:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1607 states have (on average 1.3341630367143746) internal successors, (2144), 1632 states have internal predecessors, (2144), 215 states have call successors, (215), 139 states have call predecessors, (215), 178 states have return successors, (275), 233 states have call predecessors, (275), 213 states have call successors, (275) [2022-07-13 21:16:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2634 transitions. [2022-07-13 21:16:31,148 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2634 transitions. Word has length 91 [2022-07-13 21:16:31,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:31,148 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 2634 transitions. [2022-07-13 21:16:31,148 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) [2022-07-13 21:16:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2634 transitions. [2022-07-13 21:16:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:16:31,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:31,149 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] [2022-07-13 21:16:31,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:16:31,150 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:31,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:31,150 INFO L85 PathProgramCache]: Analyzing trace with hash -491011502, now seen corresponding path program 1 times [2022-07-13 21:16:31,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:31,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282695153] [2022-07-13 21:16:31,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:31,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:16:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:16:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:16:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:16:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:16:31,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282695153] [2022-07-13 21:16:31,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282695153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:31,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:31,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:16:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102371015] [2022-07-13 21:16:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:31,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:16:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:16:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:16:31,228 INFO L87 Difference]: Start difference. First operand 2002 states and 2634 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-13 21:16:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:32,032 INFO L93 Difference]: Finished difference Result 3529 states and 4598 transitions. [2022-07-13 21:16:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:16:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-07-13 21:16:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:32,044 INFO L225 Difference]: With dead ends: 3529 [2022-07-13 21:16:32,044 INFO L226 Difference]: Without dead ends: 2076 [2022-07-13 21:16:32,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-13 21:16:32,047 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1237 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:32,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 2174 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:16:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2022-07-13 21:16:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1781. [2022-07-13 21:16:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1439 states have (on average 1.3384294649061848) internal successors, (1926), 1459 states have internal predecessors, (1926), 187 states have call successors, (187), 120 states have call predecessors, (187), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2022-07-13 21:16:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2348 transitions. [2022-07-13 21:16:32,097 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2348 transitions. Word has length 91 [2022-07-13 21:16:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:32,098 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2348 transitions. [2022-07-13 21:16:32,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-13 21:16:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2348 transitions. [2022-07-13 21:16:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:16:32,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:32,099 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] [2022-07-13 21:16:32,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:16:32,099 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1448150544, now seen corresponding path program 1 times [2022-07-13 21:16:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584575816] [2022-07-13 21:16:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:16:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:16:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:16:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:16:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:16:32,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584575816] [2022-07-13 21:16:32,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584575816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:32,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:32,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:32,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250256749] [2022-07-13 21:16:32,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:32,149 INFO L87 Difference]: Start difference. First operand 1781 states and 2348 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) [2022-07-13 21:16:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:32,576 INFO L93 Difference]: Finished difference Result 4933 states and 6460 transitions. [2022-07-13 21:16:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:16:32,576 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 [2022-07-13 21:16:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:32,591 INFO L225 Difference]: With dead ends: 4933 [2022-07-13 21:16:32,591 INFO L226 Difference]: Without dead ends: 3464 [2022-07-13 21:16:32,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:16:32,595 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1155 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:32,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 1809 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:16:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-07-13 21:16:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3250. [2022-07-13 21:16:32,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2588 states have (on average 1.295981452859351) internal successors, (3354), 2637 states have internal predecessors, (3354), 348 states have call successors, (348), 233 states have call predecessors, (348), 312 states have return successors, (518), 382 states have call predecessors, (518), 346 states have call successors, (518) [2022-07-13 21:16:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 4220 transitions. [2022-07-13 21:16:32,689 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 4220 transitions. Word has length 91 [2022-07-13 21:16:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:32,690 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 4220 transitions. [2022-07-13 21:16:32,690 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) [2022-07-13 21:16:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 4220 transitions. [2022-07-13 21:16:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:16:32,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:32,691 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] [2022-07-13 21:16:32,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:16:32,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash 390312466, now seen corresponding path program 1 times [2022-07-13 21:16:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:32,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178639170] [2022-07-13 21:16:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:32,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:16:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:16:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:16:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:16:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:16:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:32,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178639170] [2022-07-13 21:16:32,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178639170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:32,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:32,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:16:32,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523486662] [2022-07-13 21:16:32,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:32,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:16:32,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:16:32,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:16:32,746 INFO L87 Difference]: Start difference. First operand 3250 states and 4220 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:16:33,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:33,136 INFO L93 Difference]: Finished difference Result 4834 states and 6204 transitions. [2022-07-13 21:16:33,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:16:33,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:16:33,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:33,143 INFO L225 Difference]: With dead ends: 4834 [2022-07-13 21:16:33,143 INFO L226 Difference]: Without dead ends: 1896 [2022-07-13 21:16:33,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:16:33,148 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 916 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:33,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1384 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:16:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-07-13 21:16:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1781. [2022-07-13 21:16:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1439 states have (on average 1.3127171646977067) internal successors, (1889), 1459 states have internal predecessors, (1889), 187 states have call successors, (187), 120 states have call predecessors, (187), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2022-07-13 21:16:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2311 transitions. [2022-07-13 21:16:33,199 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2311 transitions. Word has length 91 [2022-07-13 21:16:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:33,199 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2311 transitions. [2022-07-13 21:16:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:16:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2311 transitions. [2022-07-13 21:16:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 21:16:33,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:33,201 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] [2022-07-13 21:16:33,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:16:33,201 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:33,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1802771828, now seen corresponding path program 1 times [2022-07-13 21:16:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:33,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804008212] [2022-07-13 21:16:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:16:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:16:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:16:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:16:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:16:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:16:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:16:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:16:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:33,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804008212] [2022-07-13 21:16:33,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804008212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:33,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:33,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:16:33,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10148846] [2022-07-13 21:16:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:33,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:16:33,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:33,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:16:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:16:33,266 INFO L87 Difference]: Start difference. First operand 1781 states and 2311 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) [2022-07-13 21:16:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:34,275 INFO L93 Difference]: Finished difference Result 4122 states and 5300 transitions. [2022-07-13 21:16:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 21:16:34,276 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 [2022-07-13 21:16:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:34,293 INFO L225 Difference]: With dead ends: 4122 [2022-07-13 21:16:34,294 INFO L226 Difference]: Without dead ends: 2579 [2022-07-13 21:16:34,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-13 21:16:34,296 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 2156 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:34,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 2000 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:16:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-07-13 21:16:34,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2402. [2022-07-13 21:16:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1906 states have (on average 1.2759706190975866) internal successors, (2432), 1934 states have internal predecessors, (2432), 264 states have call successors, (264), 168 states have call predecessors, (264), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2022-07-13 21:16:34,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3062 transitions. [2022-07-13 21:16:34,361 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3062 transitions. Word has length 92 [2022-07-13 21:16:34,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:34,362 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3062 transitions. [2022-07-13 21:16:34,362 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) [2022-07-13 21:16:34,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3062 transitions. [2022-07-13 21:16:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:34,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:34,364 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] [2022-07-13 21:16:34,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:16:34,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash -971775259, now seen corresponding path program 1 times [2022-07-13 21:16:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:34,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780315861] [2022-07-13 21:16:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:34,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:34,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780315861] [2022-07-13 21:16:34,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780315861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:34,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:34,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:16:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218736059] [2022-07-13 21:16:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:34,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:16:34,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:16:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:16:34,433 INFO L87 Difference]: Start difference. First operand 2402 states and 3062 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:35,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:35,428 INFO L93 Difference]: Finished difference Result 2800 states and 3700 transitions. [2022-07-13 21:16:35,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:16:35,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:35,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:35,436 INFO L225 Difference]: With dead ends: 2800 [2022-07-13 21:16:35,436 INFO L226 Difference]: Without dead ends: 2511 [2022-07-13 21:16:35,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:16:35,438 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 908 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:35,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1166 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:16:35,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2022-07-13 21:16:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2402. [2022-07-13 21:16:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1906 states have (on average 1.275445960125918) internal successors, (2431), 1934 states have internal predecessors, (2431), 264 states have call successors, (264), 168 states have call predecessors, (264), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2022-07-13 21:16:35,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3061 transitions. [2022-07-13 21:16:35,551 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3061 transitions. Word has length 145 [2022-07-13 21:16:35,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:35,551 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3061 transitions. [2022-07-13 21:16:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:35,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3061 transitions. [2022-07-13 21:16:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:35,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:35,553 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] [2022-07-13 21:16:35,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:16:35,554 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:35,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1646935385, now seen corresponding path program 1 times [2022-07-13 21:16:35,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:35,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412923794] [2022-07-13 21:16:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:35,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:35,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:35,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:35,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:35,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:35,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412923794] [2022-07-13 21:16:35,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412923794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:35,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:35,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:16:35,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677458856] [2022-07-13 21:16:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:35,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:16:35,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:16:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:16:35,638 INFO L87 Difference]: Start difference. First operand 2402 states and 3061 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:37,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:37,378 INFO L93 Difference]: Finished difference Result 3202 states and 4348 transitions. [2022-07-13 21:16:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:16:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:37,386 INFO L225 Difference]: With dead ends: 3202 [2022-07-13 21:16:37,386 INFO L226 Difference]: Without dead ends: 2917 [2022-07-13 21:16:37,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:16:37,387 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1446 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:37,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1624 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 21:16:37,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-07-13 21:16:37,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2700. [2022-07-13 21:16:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2179 states have (on average 1.3143643873336393) internal successors, (2864), 2208 states have internal predecessors, (2864), 282 states have call successors, (282), 174 states have call predecessors, (282), 237 states have return successors, (387), 319 states have call predecessors, (387), 280 states have call successors, (387) [2022-07-13 21:16:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3533 transitions. [2022-07-13 21:16:37,509 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3533 transitions. Word has length 145 [2022-07-13 21:16:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:37,509 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3533 transitions. [2022-07-13 21:16:37,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3533 transitions. [2022-07-13 21:16:37,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:37,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:37,512 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] [2022-07-13 21:16:37,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:16:37,512 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:37,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash 96068139, now seen corresponding path program 1 times [2022-07-13 21:16:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:37,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225721945] [2022-07-13 21:16:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:37,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:37,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:37,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225721945] [2022-07-13 21:16:37,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225721945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:37,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:37,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144359062] [2022-07-13 21:16:37,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:37,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:37,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:37,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:37,613 INFO L87 Difference]: Start difference. First operand 2700 states and 3533 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:39,780 INFO L93 Difference]: Finished difference Result 3920 states and 5495 transitions. [2022-07-13 21:16:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:16:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:39,790 INFO L225 Difference]: With dead ends: 3920 [2022-07-13 21:16:39,791 INFO L226 Difference]: Without dead ends: 3337 [2022-07-13 21:16:39,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:16:39,793 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 1463 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:39,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 2652 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2659 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:16:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2022-07-13 21:16:39,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2977. [2022-07-13 21:16:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2431 states have (on average 1.3389551624845744) internal successors, (3255), 2461 states have internal predecessors, (3255), 300 states have call successors, (300), 180 states have call predecessors, (300), 244 states have return successors, (407), 338 states have call predecessors, (407), 298 states have call successors, (407) [2022-07-13 21:16:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 3962 transitions. [2022-07-13 21:16:39,931 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 3962 transitions. Word has length 145 [2022-07-13 21:16:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:39,931 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 3962 transitions. [2022-07-13 21:16:39,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 3962 transitions. [2022-07-13 21:16:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:39,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:39,933 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] [2022-07-13 21:16:39,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:16:39,934 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1043106025, now seen corresponding path program 1 times [2022-07-13 21:16:39,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:39,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751238295] [2022-07-13 21:16:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:39,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:40,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:40,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:40,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751238295] [2022-07-13 21:16:40,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751238295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:40,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:40,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237314927] [2022-07-13 21:16:40,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:40,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:40,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:40,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:40,034 INFO L87 Difference]: Start difference. First operand 2977 states and 3962 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:42,230 INFO L93 Difference]: Finished difference Result 4978 states and 7172 transitions. [2022-07-13 21:16:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:16:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:42,240 INFO L225 Difference]: With dead ends: 4978 [2022-07-13 21:16:42,240 INFO L226 Difference]: Without dead ends: 4118 [2022-07-13 21:16:42,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:16:42,243 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1460 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:42,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2644 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:16:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2022-07-13 21:16:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 3532. [2022-07-13 21:16:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 2936 states have (on average 1.375340599455041) internal successors, (4038), 2968 states have internal predecessors, (4038), 336 states have call successors, (336), 192 states have call predecessors, (336), 258 states have return successors, (451), 376 states have call predecessors, (451), 334 states have call successors, (451) [2022-07-13 21:16:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4825 transitions. [2022-07-13 21:16:42,386 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4825 transitions. Word has length 145 [2022-07-13 21:16:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:42,387 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 4825 transitions. [2022-07-13 21:16:42,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4825 transitions. [2022-07-13 21:16:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:42,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:42,388 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] [2022-07-13 21:16:42,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:16:42,389 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:42,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1904939627, now seen corresponding path program 1 times [2022-07-13 21:16:42,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:42,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100467305] [2022-07-13 21:16:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:42,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:42,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:42,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:42,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:42,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:42,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100467305] [2022-07-13 21:16:42,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100467305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:42,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:42,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:42,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170584673] [2022-07-13 21:16:42,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:42,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:42,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:42,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:42,471 INFO L87 Difference]: Start difference. First operand 3532 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:44,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:44,739 INFO L93 Difference]: Finished difference Result 7013 states and 10379 transitions. [2022-07-13 21:16:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:16:44,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:44,754 INFO L225 Difference]: With dead ends: 7013 [2022-07-13 21:16:44,754 INFO L226 Difference]: Without dead ends: 5598 [2022-07-13 21:16:44,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:16:44,759 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 1456 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:44,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2640 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:16:44,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2022-07-13 21:16:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 4643. [2022-07-13 21:16:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 3947 states have (on average 1.4198125158348112) internal successors, (5604), 3983 states have internal predecessors, (5604), 408 states have call successors, (408), 216 states have call predecessors, (408), 286 states have return successors, (545), 452 states have call predecessors, (545), 406 states have call successors, (545) [2022-07-13 21:16:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6557 transitions. [2022-07-13 21:16:44,971 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6557 transitions. Word has length 145 [2022-07-13 21:16:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:44,971 INFO L495 AbstractCegarLoop]: Abstraction has 4643 states and 6557 transitions. [2022-07-13 21:16:44,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:44,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6557 transitions. [2022-07-13 21:16:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:44,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:44,973 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] [2022-07-13 21:16:44,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:16:44,974 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash -145469271, now seen corresponding path program 1 times [2022-07-13 21:16:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082895276] [2022-07-13 21:16:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:45,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082895276] [2022-07-13 21:16:45,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082895276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:45,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:45,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:45,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201356395] [2022-07-13 21:16:45,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:45,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:45,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:45,075 INFO L87 Difference]: Start difference. First operand 4643 states and 6557 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:47,424 INFO L93 Difference]: Finished difference Result 11082 states and 16809 transitions. [2022-07-13 21:16:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:16:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:47,444 INFO L225 Difference]: With dead ends: 11082 [2022-07-13 21:16:47,445 INFO L226 Difference]: Without dead ends: 8556 [2022-07-13 21:16:47,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:16:47,452 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 1452 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:47,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2636 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 21:16:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8556 states. [2022-07-13 21:16:47,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8556 to 6870. [2022-07-13 21:16:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4633411449615) internal successors, (8742), 6018 states have internal predecessors, (8742), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-07-13 21:16:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10045 transitions. [2022-07-13 21:16:47,782 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10045 transitions. Word has length 145 [2022-07-13 21:16:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:47,782 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10045 transitions. [2022-07-13 21:16:47,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10045 transitions. [2022-07-13 21:16:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:47,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:47,785 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] [2022-07-13 21:16:47,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:16:47,786 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash 342577835, now seen corresponding path program 1 times [2022-07-13 21:16:47,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:47,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825794183] [2022-07-13 21:16:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:47,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:47,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:47,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825794183] [2022-07-13 21:16:47,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825794183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:47,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:47,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:47,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081756229] [2022-07-13 21:16:47,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:47,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:47,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:47,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:47,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:47,868 INFO L87 Difference]: Start difference. First operand 6870 states and 10045 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:49,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:49,168 INFO L93 Difference]: Finished difference Result 13387 states and 20520 transitions. [2022-07-13 21:16:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:16:49,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:49,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:49,186 INFO L225 Difference]: With dead ends: 13387 [2022-07-13 21:16:49,186 INFO L226 Difference]: Without dead ends: 8634 [2022-07-13 21:16:49,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:16:49,197 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1298 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:49,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1390 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:16:49,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8634 states. [2022-07-13 21:16:49,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8634 to 6870. [2022-07-13 21:16:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4604954804151322) internal successors, (8725), 6018 states have internal predecessors, (8725), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-07-13 21:16:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10028 transitions. [2022-07-13 21:16:49,603 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10028 transitions. Word has length 145 [2022-07-13 21:16:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:49,603 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10028 transitions. [2022-07-13 21:16:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10028 transitions. [2022-07-13 21:16:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:49,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:49,607 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] [2022-07-13 21:16:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:16:49,607 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:49,607 INFO L85 PathProgramCache]: Analyzing trace with hash -750057367, now seen corresponding path program 1 times [2022-07-13 21:16:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:49,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499895960] [2022-07-13 21:16:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:49,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:49,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499895960] [2022-07-13 21:16:49,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499895960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:49,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:49,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029206042] [2022-07-13 21:16:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:49,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:49,700 INFO L87 Difference]: Start difference. First operand 6870 states and 10028 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:51,261 INFO L93 Difference]: Finished difference Result 13369 states and 20434 transitions. [2022-07-13 21:16:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:16:51,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:51,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:51,276 INFO L225 Difference]: With dead ends: 13369 [2022-07-13 21:16:51,276 INFO L226 Difference]: Without dead ends: 8616 [2022-07-13 21:16:51,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:16:51,285 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1167 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:51,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 1571 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:16:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2022-07-13 21:16:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 6870. [2022-07-13 21:16:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4576498158687647) internal successors, (8708), 6018 states have internal predecessors, (8708), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-07-13 21:16:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10011 transitions. [2022-07-13 21:16:51,611 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10011 transitions. Word has length 145 [2022-07-13 21:16:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:51,612 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10011 transitions. [2022-07-13 21:16:51,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10011 transitions. [2022-07-13 21:16:51,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:51,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:51,615 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] [2022-07-13 21:16:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:16:51,616 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:51,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2032229653, now seen corresponding path program 1 times [2022-07-13 21:16:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971190179] [2022-07-13 21:16:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:51,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:51,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971190179] [2022-07-13 21:16:51,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971190179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:51,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:51,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274814569] [2022-07-13 21:16:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:51,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:51,735 INFO L87 Difference]: Start difference. First operand 6870 states and 10011 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:54,536 INFO L93 Difference]: Finished difference Result 19164 states and 29455 transitions. [2022-07-13 21:16:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:16:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:54,565 INFO L225 Difference]: With dead ends: 19164 [2022-07-13 21:16:54,566 INFO L226 Difference]: Without dead ends: 14411 [2022-07-13 21:16:54,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:16:54,577 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 1434 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:54,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2614 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:16:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14411 states. [2022-07-13 21:16:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14411 to 11386. [2022-07-13 21:16:55,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 10090 states have (on average 1.490386521308226) internal successors, (15038), 10150 states have internal predecessors, (15038), 840 states have call successors, (840), 360 states have call predecessors, (840), 454 states have return successors, (1217), 908 states have call predecessors, (1217), 838 states have call successors, (1217) [2022-07-13 21:16:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 17095 transitions. [2022-07-13 21:16:55,192 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 17095 transitions. Word has length 145 [2022-07-13 21:16:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:55,192 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 17095 transitions. [2022-07-13 21:16:55,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 17095 transitions. [2022-07-13 21:16:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:55,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:55,197 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] [2022-07-13 21:16:55,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:16:55,197 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 540734957, now seen corresponding path program 1 times [2022-07-13 21:16:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:55,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300956075] [2022-07-13 21:16:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:55,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:55,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:55,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:55,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300956075] [2022-07-13 21:16:55,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300956075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:55,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:55,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:55,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112817086] [2022-07-13 21:16:55,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:55,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:55,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:55,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:55,274 INFO L87 Difference]: Start difference. First operand 11386 states and 17095 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:57,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:57,056 INFO L93 Difference]: Finished difference Result 23819 states and 37022 transitions. [2022-07-13 21:16:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:16:57,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:16:57,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:57,088 INFO L225 Difference]: With dead ends: 23819 [2022-07-13 21:16:57,088 INFO L226 Difference]: Without dead ends: 14550 [2022-07-13 21:16:57,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:16:57,104 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1296 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:57,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1375 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:16:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14550 states. [2022-07-13 21:16:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14550 to 11386. [2022-07-13 21:16:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 10090 states have (on average 1.4871159563924679) internal successors, (15005), 10150 states have internal predecessors, (15005), 840 states have call successors, (840), 360 states have call predecessors, (840), 454 states have return successors, (1217), 908 states have call predecessors, (1217), 838 states have call successors, (1217) [2022-07-13 21:16:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 17062 transitions. [2022-07-13 21:16:57,822 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 17062 transitions. Word has length 145 [2022-07-13 21:16:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:57,822 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 17062 transitions. [2022-07-13 21:16:57,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 17062 transitions. [2022-07-13 21:16:57,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:16:57,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:57,827 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] [2022-07-13 21:16:57,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:16:57,828 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:57,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash 208091819, now seen corresponding path program 1 times [2022-07-13 21:16:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:57,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086866064] [2022-07-13 21:16:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:57,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:57,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:16:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:16:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:57,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:16:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:57,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:16:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:57,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:57,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086866064] [2022-07-13 21:16:57,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086866064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:57,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:57,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97681151] [2022-07-13 21:16:57,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:57,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:57,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:57,916 INFO L87 Difference]: Start difference. First operand 11386 states and 17062 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:02,487 INFO L93 Difference]: Finished difference Result 39724 states and 61659 transitions. [2022-07-13 21:17:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:17:02,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:17:02,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:02,562 INFO L225 Difference]: With dead ends: 39724 [2022-07-13 21:17:02,563 INFO L226 Difference]: Without dead ends: 30455 [2022-07-13 21:17:02,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:02,587 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1519 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:02,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2745 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2999 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 21:17:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30455 states. [2022-07-13 21:17:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30455 to 20380. [2022-07-13 21:17:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20380 states, 18316 states have (on average 1.5088993229962875) internal successors, (27637), 18408 states have internal predecessors, (27637), 1384 states have call successors, (1384), 552 states have call predecessors, (1384), 678 states have return successors, (2279), 1484 states have call predecessors, (2279), 1382 states have call successors, (2279) [2022-07-13 21:17:04,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20380 states to 20380 states and 31300 transitions. [2022-07-13 21:17:04,029 INFO L78 Accepts]: Start accepts. Automaton has 20380 states and 31300 transitions. Word has length 145 [2022-07-13 21:17:04,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:04,029 INFO L495 AbstractCegarLoop]: Abstraction has 20380 states and 31300 transitions. [2022-07-13 21:17:04,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:04,030 INFO L276 IsEmpty]: Start isEmpty. Operand 20380 states and 31300 transitions. [2022-07-13 21:17:04,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:17:04,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:04,038 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] [2022-07-13 21:17:04,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:17:04,038 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:04,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2137024045, now seen corresponding path program 1 times [2022-07-13 21:17:04,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:04,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992500446] [2022-07-13 21:17:04,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:04,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:04,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:17:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:17:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:17:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:17:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:04,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:04,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992500446] [2022-07-13 21:17:04,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992500446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:04,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:04,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:17:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113928361] [2022-07-13 21:17:04,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:04,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:17:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:04,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:17:04,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:17:04,114 INFO L87 Difference]: Start difference. First operand 20380 states and 31300 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:11,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:11,370 INFO L93 Difference]: Finished difference Result 75532 states and 118735 transitions. [2022-07-13 21:17:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:17:11,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:17:11,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:11,520 INFO L225 Difference]: With dead ends: 75532 [2022-07-13 21:17:11,520 INFO L226 Difference]: Without dead ends: 57269 [2022-07-13 21:17:11,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:11,567 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1754 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:11,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 2584 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:17:11,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57269 states. [2022-07-13 21:17:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57269 to 38013. [2022-07-13 21:17:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38013 states, 34445 states have (on average 1.5217012628828568) internal successors, (52415), 34601 states have internal predecessors, (52415), 2440 states have call successors, (2440), 936 states have call predecessors, (2440), 1126 states have return successors, (4857), 2604 states have call predecessors, (4857), 2438 states have call successors, (4857) [2022-07-13 21:17:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38013 states to 38013 states and 59712 transitions. [2022-07-13 21:17:14,243 INFO L78 Accepts]: Start accepts. Automaton has 38013 states and 59712 transitions. Word has length 145 [2022-07-13 21:17:14,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:14,243 INFO L495 AbstractCegarLoop]: Abstraction has 38013 states and 59712 transitions. [2022-07-13 21:17:14,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:14,243 INFO L276 IsEmpty]: Start isEmpty. Operand 38013 states and 59712 transitions. [2022-07-13 21:17:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:17:14,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:14,257 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] [2022-07-13 21:17:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:17:14,257 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -156056981, now seen corresponding path program 1 times [2022-07-13 21:17:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:14,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475635995] [2022-07-13 21:17:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:17:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:17:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:17:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:14,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:17:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:14,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475635995] [2022-07-13 21:17:14,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475635995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:14,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:14,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:17:14,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033284306] [2022-07-13 21:17:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:14,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:17:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:17:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:17:14,343 INFO L87 Difference]: Start difference. First operand 38013 states and 59712 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:26,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:26,918 INFO L93 Difference]: Finished difference Result 145003 states and 231341 transitions. [2022-07-13 21:17:26,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:17:26,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:17:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:27,358 INFO L225 Difference]: With dead ends: 145003 [2022-07-13 21:17:27,358 INFO L226 Difference]: Without dead ends: 109107 [2022-07-13 21:17:27,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:27,430 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 1497 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:27,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 2707 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 21:17:27,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109107 states. [2022-07-13 21:17:32,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109107 to 73534. [2022-07-13 21:17:33,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73534 states, 67022 states have (on average 1.5300199934349914) internal successors, (102545), 67306 states have internal predecessors, (102545), 4488 states have call successors, (4488), 1704 states have call predecessors, (4488), 2022 states have return successors, (11407), 4780 states have call predecessors, (11407), 4486 states have call successors, (11407) [2022-07-13 21:17:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73534 states to 73534 states and 118440 transitions. [2022-07-13 21:17:33,364 INFO L78 Accepts]: Start accepts. Automaton has 73534 states and 118440 transitions. Word has length 145 [2022-07-13 21:17:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:17:33,365 INFO L495 AbstractCegarLoop]: Abstraction has 73534 states and 118440 transitions. [2022-07-13 21:17:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 73534 states and 118440 transitions. [2022-07-13 21:17:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:17:33,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:17:33,390 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] [2022-07-13 21:17:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:17:33,390 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:17:33,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:17:33,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1571087981, now seen corresponding path program 1 times [2022-07-13 21:17:33,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:17:33,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358495312] [2022-07-13 21:17:33,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:17:33,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:17:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:17:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:33,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:17:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:17:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:17:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:17:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:17:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:17:33,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:17:33,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358495312] [2022-07-13 21:17:33,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358495312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:17:33,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:17:33,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:17:33,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428745730] [2022-07-13 21:17:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:17:33,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:17:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:17:33,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:17:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:17:33,461 INFO L87 Difference]: Start difference. First operand 73534 states and 118440 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:56,617 INFO L93 Difference]: Finished difference Result 282410 states and 460019 transitions. [2022-07-13 21:17:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:17:56,617 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-13 21:17:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:57,396 INFO L225 Difference]: With dead ends: 282410 [2022-07-13 21:17:57,396 INFO L226 Difference]: Without dead ends: 210993 [2022-07-13 21:17:57,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:57,618 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1675 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:57,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 2578 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 21:17:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210993 states. [2022-07-13 21:18:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210993 to 144447. [2022-07-13 21:18:09,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144447 states, 132175 states have (on average 1.535320597692453) internal successors, (202931), 132715 states have internal predecessors, (202931), 8456 states have call successors, (8456), 3240 states have call predecessors, (8456), 3814 states have return successors, (28753), 9004 states have call predecessors, (28753), 8454 states have call successors, (28753) [2022-07-13 21:18:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144447 states to 144447 states and 240140 transitions. [2022-07-13 21:18:09,899 INFO L78 Accepts]: Start accepts. Automaton has 144447 states and 240140 transitions. Word has length 145 [2022-07-13 21:18:09,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:18:09,900 INFO L495 AbstractCegarLoop]: Abstraction has 144447 states and 240140 transitions. [2022-07-13 21:18:09,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:18:09,900 INFO L276 IsEmpty]: Start isEmpty. Operand 144447 states and 240140 transitions. [2022-07-13 21:18:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:18:10,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:18:10,146 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] [2022-07-13 21:18:10,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:18:10,146 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:18:10,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:18:10,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2042444331, now seen corresponding path program 1 times [2022-07-13 21:18:10,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:18:10,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807159668] [2022-07-13 21:18:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:18:10,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:18:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:18:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 21:18:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 21:18:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:18:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 21:18:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:18:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:18:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:18:10,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807159668] [2022-07-13 21:18:10,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807159668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:18:10,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:18:10,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:18:10,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259777198] [2022-07-13 21:18:10,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:18:10,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:18:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:18:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:18:10,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:18:10,236 INFO L87 Difference]: Start difference. First operand 144447 states and 240140 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)