./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-2.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_1.cil-2+token_ring.12.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb07c62e0c8f9c002ab72b797de071664dce20871b109c1b4c0b79acbb73493c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:08:45,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:08:45,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:08:45,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:08:45,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:08:45,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:08:45,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:08:45,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:08:45,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:08:45,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:08:45,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:08:45,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:08:45,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:08:45,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:08:45,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:08:45,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:08:45,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:08:45,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:08:45,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:08:45,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:08:45,710 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:08:45,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:08:45,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:08:45,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:08:45,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:08:45,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:08:45,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:08:45,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:08:45,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:08:45,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:08:45,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:08:45,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:08:45,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:08:45,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:08:45,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:08:45,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:08:45,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:08:45,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:08:45,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:08:45,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:08:45,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:08:45,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:08:45,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:08:45,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:08:45,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:08:45,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:08:45,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:08:45,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:08:45,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:08:45,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:08:45,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:08:45,765 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:08:45,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:08:45,766 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:08:45,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:08:45,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:08:45,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:08:45,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:08:45,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:08:45,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:08:45,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:08:45,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:08:45,769 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:08:45,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:08:45,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:08:45,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:08:45,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:08:45,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:08:45,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:08:45,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:08:45,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:08:45,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:08:45,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:08:45,771 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:08:45,771 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:08:45,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:08:45,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb07c62e0c8f9c002ab72b797de071664dce20871b109c1b4c0b79acbb73493c [2022-07-13 21:08:46,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:08:46,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:08:46,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:08:46,045 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:08:46,046 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:08:46,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-2.c [2022-07-13 21:08:46,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0803f4224/74ba82d34e9f4fda937e400453bc1053/FLAGc99f194cb [2022-07-13 21:08:46,570 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:08:46,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-2.c [2022-07-13 21:08:46,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0803f4224/74ba82d34e9f4fda937e400453bc1053/FLAGc99f194cb [2022-07-13 21:08:47,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0803f4224/74ba82d34e9f4fda937e400453bc1053 [2022-07-13 21:08:47,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:08:47,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:08:47,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:08:47,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:08:47,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:08:47,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b94058d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47, skipping insertion in model container [2022-07-13 21:08:47,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:08:47,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:08:47,264 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_1.cil-2+token_ring.12.cil-2.c[913,926] [2022-07-13 21:08:47,320 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_1.cil-2+token_ring.12.cil-2.c[5977,5990] [2022-07-13 21:08:47,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:08:47,431 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:08:47,443 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_1.cil-2+token_ring.12.cil-2.c[913,926] [2022-07-13 21:08:47,458 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_1.cil-2+token_ring.12.cil-2.c[5977,5990] [2022-07-13 21:08:47,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:08:47,550 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:08:47,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47 WrapperNode [2022-07-13 21:08:47,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:08:47,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:08:47,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:08:47,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:08:47,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,644 INFO L137 Inliner]: procedures = 72, calls = 84, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1055 [2022-07-13 21:08:47,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:08:47,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:08:47,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:08:47,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:08:47,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:08:47,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:08:47,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:08:47,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:08:47,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (1/1) ... [2022-07-13 21:08:47,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:08:47,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:47,719 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 21:08:47,752 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 21:08:47,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:08:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:08:47,766 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:08:47,766 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-13 21:08:47,767 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-13 21:08:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:08:47,768 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:08:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:08:47,768 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:08:47,768 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:08:47,768 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:08:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:08:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:08:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:08:47,769 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:08:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:08:47,769 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:08:47,770 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:08:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:08:47,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:08:47,770 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:08:47,770 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:08:47,934 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:08:47,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:08:48,547 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:08:48,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:08:48,556 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-13 21:08:48,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:08:48 BoogieIcfgContainer [2022-07-13 21:08:48,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:08:48,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:08:48,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:08:48,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:08:48,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:08:47" (1/3) ... [2022-07-13 21:08:48,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d37ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:08:48, skipping insertion in model container [2022-07-13 21:08:48,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:08:47" (2/3) ... [2022-07-13 21:08:48,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75d37ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:08:48, skipping insertion in model container [2022-07-13 21:08:48,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:08:48" (3/3) ... [2022-07-13 21:08:48,565 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.12.cil-2.c [2022-07-13 21:08:48,576 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:08:48,577 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:08:48,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:08:48,629 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@1f9d1f9e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1dceb593 [2022-07-13 21:08:48,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:08:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 454 states, 410 states have (on average 1.648780487804878) internal successors, (676), 415 states have internal predecessors, (676), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-07-13 21:08:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 21:08:48,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:48,645 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] [2022-07-13 21:08:48,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1427645478, now seen corresponding path program 1 times [2022-07-13 21:08:48,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:48,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023301221] [2022-07-13 21:08:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:48,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:48,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 21:08:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:48,945 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 21:08:48,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:48,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023301221] [2022-07-13 21:08:48,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023301221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:48,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:48,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:48,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637635592] [2022-07-13 21:08:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:48,980 INFO L87 Difference]: Start difference. First operand has 454 states, 410 states have (on average 1.648780487804878) internal successors, (676), 415 states have internal predecessors, (676), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:49,284 INFO L93 Difference]: Finished difference Result 953 states and 1548 transitions. [2022-07-13 21:08:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-13 21:08:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:49,299 INFO L225 Difference]: With dead ends: 953 [2022-07-13 21:08:49,299 INFO L226 Difference]: Without dead ends: 514 [2022-07-13 21:08:49,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:49,307 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 944 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:49,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1120 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:08:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-13 21:08:49,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 508. [2022-07-13 21:08:49,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 459 states have (on average 1.5315904139433552) internal successors, (703), 463 states have internal predecessors, (703), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-13 21:08:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 779 transitions. [2022-07-13 21:08:49,375 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 779 transitions. Word has length 44 [2022-07-13 21:08:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:49,376 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 779 transitions. [2022-07-13 21:08:49,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 779 transitions. [2022-07-13 21:08:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:08:49,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:49,379 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] [2022-07-13 21:08:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:08:49,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:49,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2087439571, now seen corresponding path program 1 times [2022-07-13 21:08:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:49,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813546590] [2022-07-13 21:08:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:49,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:08:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:49,451 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 21:08:49,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:49,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813546590] [2022-07-13 21:08:49,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813546590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:49,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:49,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:49,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303668545] [2022-07-13 21:08:49,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:49,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:49,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:49,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:49,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:49,455 INFO L87 Difference]: Start difference. First operand 508 states and 779 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:49,977 INFO L93 Difference]: Finished difference Result 756 states and 1119 transitions. [2022-07-13 21:08:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:49,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:08:49,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:49,989 INFO L225 Difference]: With dead ends: 756 [2022-07-13 21:08:49,989 INFO L226 Difference]: Without dead ends: 632 [2022-07-13 21:08:49,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:49,993 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 368 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:49,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1448 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:08:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-07-13 21:08:50,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 575. [2022-07-13 21:08:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 520 states have (on average 1.5134615384615384) internal successors, (787), 524 states have internal predecessors, (787), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-13 21:08:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 869 transitions. [2022-07-13 21:08:50,040 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 869 transitions. Word has length 45 [2022-07-13 21:08:50,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:50,040 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 869 transitions. [2022-07-13 21:08:50,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 869 transitions. [2022-07-13 21:08:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 21:08:50,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:50,043 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] [2022-07-13 21:08:50,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:08:50,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:50,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:50,044 INFO L85 PathProgramCache]: Analyzing trace with hash 803082110, now seen corresponding path program 1 times [2022-07-13 21:08:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:50,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590056607] [2022-07-13 21:08:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 21:08:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:50,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590056607] [2022-07-13 21:08:50,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590056607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:50,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:50,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:50,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020389614] [2022-07-13 21:08:50,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:50,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:50,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:50,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:50,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:50,110 INFO L87 Difference]: Start difference. First operand 575 states and 869 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:50,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:50,287 INFO L93 Difference]: Finished difference Result 983 states and 1428 transitions. [2022-07-13 21:08:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:50,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-13 21:08:50,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:50,292 INFO L225 Difference]: With dead ends: 983 [2022-07-13 21:08:50,292 INFO L226 Difference]: Without dead ends: 792 [2022-07-13 21:08:50,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:50,294 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 953 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:50,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1122 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:08:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-07-13 21:08:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 740. [2022-07-13 21:08:50,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 666 states have (on average 1.466966966966967) internal successors, (977), 673 states have internal predecessors, (977), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (60), 46 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-13 21:08:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1087 transitions. [2022-07-13 21:08:50,326 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1087 transitions. Word has length 45 [2022-07-13 21:08:50,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:50,327 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1087 transitions. [2022-07-13 21:08:50,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 21:08:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1087 transitions. [2022-07-13 21:08:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 21:08:50,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:50,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:50,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:08:50,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:50,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1436949354, now seen corresponding path program 1 times [2022-07-13 21:08:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910443232] [2022-07-13 21:08:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:08:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:08:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:08:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:50,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910443232] [2022-07-13 21:08:50,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910443232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:50,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:50,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:50,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340924655] [2022-07-13 21:08:50,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:50,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:50,391 INFO L87 Difference]: Start difference. First operand 740 states and 1087 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:50,850 INFO L93 Difference]: Finished difference Result 1324 states and 1872 transitions. [2022-07-13 21:08:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:50,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-13 21:08:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:50,855 INFO L225 Difference]: With dead ends: 1324 [2022-07-13 21:08:50,855 INFO L226 Difference]: Without dead ends: 968 [2022-07-13 21:08:50,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:50,861 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 352 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:50,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1503 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:08:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-07-13 21:08:50,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 930. [2022-07-13 21:08:50,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 832 states have (on average 1.4146634615384615) internal successors, (1177), 841 states have internal predecessors, (1177), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-07-13 21:08:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1325 transitions. [2022-07-13 21:08:50,902 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1325 transitions. Word has length 62 [2022-07-13 21:08:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:50,902 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1325 transitions. [2022-07-13 21:08:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1325 transitions. [2022-07-13 21:08:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 21:08:50,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:50,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:50,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:08:50,909 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1474560009, now seen corresponding path program 1 times [2022-07-13 21:08:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:50,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641753517] [2022-07-13 21:08:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:50,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:50,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:08:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:08:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 21:08:50,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:50,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641753517] [2022-07-13 21:08:50,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641753517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:50,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:50,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 21:08:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98409768] [2022-07-13 21:08:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:50,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:08:50,994 INFO L87 Difference]: Start difference. First operand 930 states and 1325 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:08:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:51,190 INFO L93 Difference]: Finished difference Result 1583 states and 2178 transitions. [2022-07-13 21:08:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:08:51,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-13 21:08:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:51,195 INFO L225 Difference]: With dead ends: 1583 [2022-07-13 21:08:51,195 INFO L226 Difference]: Without dead ends: 1129 [2022-07-13 21:08:51,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:51,199 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 940 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:51,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 1119 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:08:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2022-07-13 21:08:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1074. [2022-07-13 21:08:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 960 states have (on average 1.3833333333333333) internal successors, (1328), 971 states have internal predecessors, (1328), 72 states have call successors, (72), 35 states have call predecessors, (72), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-07-13 21:08:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1498 transitions. [2022-07-13 21:08:51,250 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1498 transitions. Word has length 67 [2022-07-13 21:08:51,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:51,251 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1498 transitions. [2022-07-13 21:08:51,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-13 21:08:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1498 transitions. [2022-07-13 21:08:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 21:08:51,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:51,253 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:08:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:08:51,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:51,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash 132320028, now seen corresponding path program 1 times [2022-07-13 21:08:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:51,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117199563] [2022-07-13 21:08:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:51,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:51,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:51,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:08:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:08:51,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:51,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117199563] [2022-07-13 21:08:51,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117199563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:51,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530488474] [2022-07-13 21:08:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:51,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:51,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:51,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:51,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:08:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:51,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 21:08:51,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:51,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:08:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:08:51,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530488474] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:51,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 21:08:51,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-13 21:08:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521304589] [2022-07-13 21:08:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:08:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:08:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:08:51,698 INFO L87 Difference]: Start difference. First operand 1074 states and 1498 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:51,852 INFO L93 Difference]: Finished difference Result 1130 states and 1566 transitions. [2022-07-13 21:08:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:08:51,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-13 21:08:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:51,858 INFO L225 Difference]: With dead ends: 1130 [2022-07-13 21:08:51,858 INFO L226 Difference]: Without dead ends: 1127 [2022-07-13 21:08:51,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:08:51,860 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 1259 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:51,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 780 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:08:51,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-07-13 21:08:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1073. [2022-07-13 21:08:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 960 states have (on average 1.38125) internal successors, (1326), 970 states have internal predecessors, (1326), 71 states have call successors, (71), 35 states have call predecessors, (71), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-07-13 21:08:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1495 transitions. [2022-07-13 21:08:51,927 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1495 transitions. Word has length 68 [2022-07-13 21:08:51,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:51,927 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1495 transitions. [2022-07-13 21:08:51,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 21:08:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1495 transitions. [2022-07-13 21:08:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 21:08:51,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:51,930 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:08:51,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 21:08:52,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 21:08:52,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:52,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:52,152 INFO L85 PathProgramCache]: Analyzing trace with hash -194439590, now seen corresponding path program 1 times [2022-07-13 21:08:52,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:52,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261164366] [2022-07-13 21:08:52,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:52,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:08:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:08:52,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:52,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261164366] [2022-07-13 21:08:52,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261164366] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:52,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75255298] [2022-07-13 21:08:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:52,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:52,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:52,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:52,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:08:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:52,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:08:52,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:08:52,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:08:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:08:52,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75255298] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:08:52,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:08:52,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-13 21:08:52,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474799538] [2022-07-13 21:08:52,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:08:52,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 21:08:52,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 21:08:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:08:52,771 INFO L87 Difference]: Start difference. First operand 1073 states and 1495 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:08:54,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:54,393 INFO L93 Difference]: Finished difference Result 2773 states and 3715 transitions. [2022-07-13 21:08:54,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-13 21:08:54,393 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-13 21:08:54,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:54,402 INFO L225 Difference]: With dead ends: 2773 [2022-07-13 21:08:54,402 INFO L226 Difference]: Without dead ends: 2229 [2022-07-13 21:08:54,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 21:08:54,405 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 1905 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 3706 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:54,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1938 Valid, 3706 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:08:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2022-07-13 21:08:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1462. [2022-07-13 21:08:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1310 states have (on average 1.3435114503816794) internal successors, (1760), 1328 states have internal predecessors, (1760), 91 states have call successors, (91), 49 states have call predecessors, (91), 59 states have return successors, (132), 85 states have call predecessors, (132), 90 states have call successors, (132) [2022-07-13 21:08:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1983 transitions. [2022-07-13 21:08:54,483 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1983 transitions. Word has length 69 [2022-07-13 21:08:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:54,484 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 1983 transitions. [2022-07-13 21:08:54,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-13 21:08:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1983 transitions. [2022-07-13 21:08:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 21:08:54,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:54,487 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 21:08:54,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:54,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-13 21:08:54,704 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash -939873926, now seen corresponding path program 1 times [2022-07-13 21:08:54,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:54,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471708158] [2022-07-13 21:08:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 21:08:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 21:08:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 21:08:54,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:54,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471708158] [2022-07-13 21:08:54,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471708158] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:54,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117440040] [2022-07-13 21:08:54,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:54,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:54,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:54,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:54,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:08:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:54,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 21:08:54,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 21:08:54,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:08:54,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117440040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:54,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:08:54,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:08:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062713284] [2022-07-13 21:08:54,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:08:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:08:54,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:54,946 INFO L87 Difference]: Start difference. First operand 1462 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:08:55,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:55,003 INFO L93 Difference]: Finished difference Result 2185 states and 2921 transitions. [2022-07-13 21:08:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:08:55,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-13 21:08:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:55,009 INFO L225 Difference]: With dead ends: 2185 [2022-07-13 21:08:55,009 INFO L226 Difference]: Without dead ends: 1340 [2022-07-13 21:08:55,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:55,012 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 648 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:55,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 794 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:08:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-07-13 21:08:55,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1325. [2022-07-13 21:08:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 1189 states have (on average 1.3473507148864592) internal successors, (1602), 1206 states have internal predecessors, (1602), 83 states have call successors, (83), 43 states have call predecessors, (83), 51 states have return successors, (118), 76 states have call predecessors, (118), 82 states have call successors, (118) [2022-07-13 21:08:55,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1803 transitions. [2022-07-13 21:08:55,094 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1803 transitions. Word has length 88 [2022-07-13 21:08:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:55,094 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 1803 transitions. [2022-07-13 21:08:55,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-13 21:08:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1803 transitions. [2022-07-13 21:08:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 21:08:55,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:55,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:55,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:55,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:55,312 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:55,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:55,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1556491019, now seen corresponding path program 1 times [2022-07-13 21:08:55,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:55,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066068310] [2022-07-13 21:08:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:08:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 21:08:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 21:08:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 21:08:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:08:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 21:08:55,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:55,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066068310] [2022-07-13 21:08:55,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066068310] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:08:55,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760499749] [2022-07-13 21:08:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:55,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:08:55,384 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:08:55,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 21:08:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:08:55,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:08:55,540 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:08:55,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:08:55,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760499749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:55,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:08:55,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 21:08:55,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808708044] [2022-07-13 21:08:55,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:55,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:08:55,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:55,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:08:55,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:55,542 INFO L87 Difference]: Start difference. First operand 1325 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:08:55,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:55,585 INFO L93 Difference]: Finished difference Result 1704 states and 2271 transitions. [2022-07-13 21:08:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:08:55,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-13 21:08:55,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:55,588 INFO L225 Difference]: With dead ends: 1704 [2022-07-13 21:08:55,588 INFO L226 Difference]: Without dead ends: 378 [2022-07-13 21:08:55,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:08:55,593 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 62 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:55,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1396 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:08:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-13 21:08:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-07-13 21:08:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 345 states have (on average 1.5768115942028986) internal successors, (544), 346 states have internal predecessors, (544), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 21:08:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 596 transitions. [2022-07-13 21:08:55,605 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 596 transitions. Word has length 103 [2022-07-13 21:08:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:55,605 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 596 transitions. [2022-07-13 21:08:55,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 21:08:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 596 transitions. [2022-07-13 21:08:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:08:55,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:55,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:55,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 21:08:55,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:08:55,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:55,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:55,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1582396628, now seen corresponding path program 1 times [2022-07-13 21:08:55,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:55,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805470188] [2022-07-13 21:08:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:08:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:08:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:08:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:08:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:55,992 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 21:08:55,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:55,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805470188] [2022-07-13 21:08:55,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805470188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:55,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:55,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:08:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90719142] [2022-07-13 21:08:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:08:55,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:08:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:55,996 INFO L87 Difference]: Start difference. First operand 378 states and 596 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 21:08:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:57,361 INFO L93 Difference]: Finished difference Result 891 states and 1428 transitions. [2022-07-13 21:08:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:08:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:08:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:57,365 INFO L225 Difference]: With dead ends: 891 [2022-07-13 21:08:57,365 INFO L226 Difference]: Without dead ends: 520 [2022-07-13 21:08:57,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:08:57,366 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1030 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:57,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 1049 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:08:57,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-07-13 21:08:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 378. [2022-07-13 21:08:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 345 states have (on average 1.5739130434782609) internal successors, (543), 346 states have internal predecessors, (543), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 21:08:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 595 transitions. [2022-07-13 21:08:57,388 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 595 transitions. Word has length 178 [2022-07-13 21:08:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:57,389 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 595 transitions. [2022-07-13 21:08:57,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 21:08:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 595 transitions. [2022-07-13 21:08:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:08:57,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:57,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:57,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:08:57,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash -79298322, now seen corresponding path program 1 times [2022-07-13 21:08:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:57,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819252705] [2022-07-13 21:08:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:08:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:57,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:08:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:08:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:57,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:08:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:57,539 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 21:08:57,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:57,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819252705] [2022-07-13 21:08:57,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819252705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:57,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:57,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:08:57,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680155699] [2022-07-13 21:08:57,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:57,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:08:57,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:57,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:08:57,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:08:57,542 INFO L87 Difference]: Start difference. First operand 378 states and 595 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 21:08:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:08:58,891 INFO L93 Difference]: Finished difference Result 883 states and 1411 transitions. [2022-07-13 21:08:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:08:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:08:58,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:08:58,895 INFO L225 Difference]: With dead ends: 883 [2022-07-13 21:08:58,895 INFO L226 Difference]: Without dead ends: 520 [2022-07-13 21:08:58,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:08:58,897 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1021 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:08:58,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 1047 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:08:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-07-13 21:08:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 378. [2022-07-13 21:08:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 345 states have (on average 1.5710144927536231) internal successors, (542), 346 states have internal predecessors, (542), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-13 21:08:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 594 transitions. [2022-07-13 21:08:58,920 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 594 transitions. Word has length 178 [2022-07-13 21:08:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:08:58,920 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 594 transitions. [2022-07-13 21:08:58,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 21:08:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 594 transitions. [2022-07-13 21:08:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:08:58,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:08:58,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:08:58,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:08:58,923 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:08:58,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:08:58,923 INFO L85 PathProgramCache]: Analyzing trace with hash -649570128, now seen corresponding path program 1 times [2022-07-13 21:08:58,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:08:58,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660244302] [2022-07-13 21:08:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:08:58,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:08:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:08:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:59,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:08:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:08:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:59,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:08:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:08:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:08:59,065 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 21:08:59,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:08:59,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660244302] [2022-07-13 21:08:59,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660244302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:08:59,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:08:59,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:08:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537643640] [2022-07-13 21:08:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:08:59,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:08:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:08:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:08:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:08:59,069 INFO L87 Difference]: Start difference. First operand 378 states and 594 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 21:09:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:01,713 INFO L93 Difference]: Finished difference Result 1394 states and 2241 transitions. [2022-07-13 21:09:01,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:09:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:01,718 INFO L225 Difference]: With dead ends: 1394 [2022-07-13 21:09:01,718 INFO L226 Difference]: Without dead ends: 1037 [2022-07-13 21:09:01,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:01,720 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 1552 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:01,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 1807 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:09:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1037 states. [2022-07-13 21:09:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1037 to 754. [2022-07-13 21:09:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 693 states have (on average 1.5844155844155845) internal successors, (1098), 695 states have internal predecessors, (1098), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-13 21:09:01,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1195 transitions. [2022-07-13 21:09:01,769 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1195 transitions. Word has length 178 [2022-07-13 21:09:01,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:01,769 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1195 transitions. [2022-07-13 21:09:01,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 21:09:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1195 transitions. [2022-07-13 21:09:01,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:01,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:01,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:01,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:09:01,772 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1525555404, now seen corresponding path program 1 times [2022-07-13 21:09:01,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:01,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033292040] [2022-07-13 21:09:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:01,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:01,901 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 21:09:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033292040] [2022-07-13 21:09:01,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033292040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:01,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:01,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868534402] [2022-07-13 21:09:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:01,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:01,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:01,904 INFO L87 Difference]: Start difference. First operand 754 states and 1195 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:05,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:05,048 INFO L93 Difference]: Finished difference Result 2307 states and 3715 transitions. [2022-07-13 21:09:05,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:05,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:05,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:05,055 INFO L225 Difference]: With dead ends: 2307 [2022-07-13 21:09:05,055 INFO L226 Difference]: Without dead ends: 1574 [2022-07-13 21:09:05,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:05,057 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 1586 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:05,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 2880 Invalid, 3206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:09:05,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-07-13 21:09:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1103. [2022-07-13 21:09:05,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1014 states have (on average 1.5779092702169626) internal successors, (1600), 1017 states have internal predecessors, (1600), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-13 21:09:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1741 transitions. [2022-07-13 21:09:05,144 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1741 transitions. Word has length 178 [2022-07-13 21:09:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:05,144 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1741 transitions. [2022-07-13 21:09:05,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1741 transitions. [2022-07-13 21:09:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:05,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:05,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:05,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:09:05,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:05,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:05,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2136824462, now seen corresponding path program 1 times [2022-07-13 21:09:05,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:05,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164689026] [2022-07-13 21:09:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:05,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:05,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:05,285 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 21:09:05,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:05,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164689026] [2022-07-13 21:09:05,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164689026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:05,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:05,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:05,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348658034] [2022-07-13 21:09:05,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:05,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:05,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:05,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:05,287 INFO L87 Difference]: Start difference. First operand 1103 states and 1741 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:07,013 INFO L93 Difference]: Finished difference Result 2674 states and 4303 transitions. [2022-07-13 21:09:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:07,020 INFO L225 Difference]: With dead ends: 2674 [2022-07-13 21:09:07,021 INFO L226 Difference]: Without dead ends: 1592 [2022-07-13 21:09:07,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:07,024 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 1118 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:07,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 1576 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 21:09:07,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-07-13 21:09:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1103. [2022-07-13 21:09:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1014 states have (on average 1.5749506903353057) internal successors, (1597), 1017 states have internal predecessors, (1597), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-13 21:09:07,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1738 transitions. [2022-07-13 21:09:07,118 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1738 transitions. Word has length 178 [2022-07-13 21:09:07,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:07,118 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1738 transitions. [2022-07-13 21:09:07,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:07,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1738 transitions. [2022-07-13 21:09:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:07,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:07,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:07,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:09:07,121 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:07,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash -242490576, now seen corresponding path program 1 times [2022-07-13 21:09:07,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:07,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921665060] [2022-07-13 21:09:07,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:07,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:07,258 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 21:09:07,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:07,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921665060] [2022-07-13 21:09:07,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921665060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:07,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:07,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:07,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606114038] [2022-07-13 21:09:07,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:07,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:07,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:07,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:07,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:07,260 INFO L87 Difference]: Start difference. First operand 1103 states and 1738 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:08,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:08,584 INFO L93 Difference]: Finished difference Result 2670 states and 4286 transitions. [2022-07-13 21:09:08,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:08,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:08,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:08,592 INFO L225 Difference]: With dead ends: 2670 [2022-07-13 21:09:08,592 INFO L226 Difference]: Without dead ends: 1588 [2022-07-13 21:09:08,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:08,608 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 1282 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:08,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1378 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:09:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2022-07-13 21:09:08,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1103. [2022-07-13 21:09:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 1014 states have (on average 1.571992110453649) internal successors, (1594), 1017 states have internal predecessors, (1594), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-13 21:09:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1735 transitions. [2022-07-13 21:09:08,699 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1735 transitions. Word has length 178 [2022-07-13 21:09:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:08,700 INFO L495 AbstractCegarLoop]: Abstraction has 1103 states and 1735 transitions. [2022-07-13 21:09:08,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1735 transitions. [2022-07-13 21:09:08,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:08,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:08,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:08,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:09:08,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:08,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:08,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1204090290, now seen corresponding path program 1 times [2022-07-13 21:09:08,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:08,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285915736] [2022-07-13 21:09:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:08,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:08,847 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 21:09:08,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:08,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285915736] [2022-07-13 21:09:08,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285915736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:08,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:08,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261497918] [2022-07-13 21:09:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:08,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:08,849 INFO L87 Difference]: Start difference. First operand 1103 states and 1735 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:11,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:11,718 INFO L93 Difference]: Finished difference Result 3644 states and 5825 transitions. [2022-07-13 21:09:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:11,727 INFO L225 Difference]: With dead ends: 3644 [2022-07-13 21:09:11,727 INFO L226 Difference]: Without dead ends: 2562 [2022-07-13 21:09:11,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:11,731 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1670 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:11,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 1975 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 21:09:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2022-07-13 21:09:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 1811. [2022-07-13 21:09:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1666 states have (on average 1.5660264105642256) internal successors, (2609), 1671 states have internal predecessors, (2609), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-13 21:09:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2842 transitions. [2022-07-13 21:09:11,890 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2842 transitions. Word has length 178 [2022-07-13 21:09:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:11,890 INFO L495 AbstractCegarLoop]: Abstraction has 1811 states and 2842 transitions. [2022-07-13 21:09:11,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2842 transitions. [2022-07-13 21:09:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:11,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:11,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:11,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:09:11,893 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash 280922864, now seen corresponding path program 1 times [2022-07-13 21:09:11,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:11,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766399290] [2022-07-13 21:09:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:11,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:12,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:12,040 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 21:09:12,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:12,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766399290] [2022-07-13 21:09:12,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766399290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:12,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:12,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:12,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947404414] [2022-07-13 21:09:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:12,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:12,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:12,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:12,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:12,042 INFO L87 Difference]: Start difference. First operand 1811 states and 2842 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:13,677 INFO L93 Difference]: Finished difference Result 4340 states and 6921 transitions. [2022-07-13 21:09:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:13,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:13,688 INFO L225 Difference]: With dead ends: 4340 [2022-07-13 21:09:13,688 INFO L226 Difference]: Without dead ends: 2550 [2022-07-13 21:09:13,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:13,694 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1115 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:13,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1565 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:09:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2022-07-13 21:09:13,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1811. [2022-07-13 21:09:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1666 states have (on average 1.5630252100840336) internal successors, (2604), 1671 states have internal predecessors, (2604), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-13 21:09:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2837 transitions. [2022-07-13 21:09:13,941 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2837 transitions. Word has length 178 [2022-07-13 21:09:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:13,942 INFO L495 AbstractCegarLoop]: Abstraction has 1811 states and 2837 transitions. [2022-07-13 21:09:13,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2837 transitions. [2022-07-13 21:09:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:13,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:13,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:13,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:09:13,945 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash 666785266, now seen corresponding path program 1 times [2022-07-13 21:09:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:13,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371903245] [2022-07-13 21:09:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:14,092 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 21:09:14,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:14,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371903245] [2022-07-13 21:09:14,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371903245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:14,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:14,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:14,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995680087] [2022-07-13 21:09:14,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:14,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:14,094 INFO L87 Difference]: Start difference. First operand 1811 states and 2837 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:17,311 INFO L93 Difference]: Finished difference Result 6232 states and 9892 transitions. [2022-07-13 21:09:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:17,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:17,336 INFO L225 Difference]: With dead ends: 6232 [2022-07-13 21:09:17,336 INFO L226 Difference]: Without dead ends: 4442 [2022-07-13 21:09:17,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:17,343 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 1558 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 3132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:17,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 2845 Invalid, 3132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:09:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-07-13 21:09:17,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 3229. [2022-07-13 21:09:17,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 2972 states have (on average 1.557200538358008) internal successors, (4628), 2981 states have internal predecessors, (4628), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-13 21:09:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 5051 transitions. [2022-07-13 21:09:17,710 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 5051 transitions. Word has length 178 [2022-07-13 21:09:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:17,710 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 5051 transitions. [2022-07-13 21:09:17,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:17,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 5051 transitions. [2022-07-13 21:09:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:17,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:17,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:17,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:09:17,714 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:17,715 INFO L85 PathProgramCache]: Analyzing trace with hash 402137776, now seen corresponding path program 1 times [2022-07-13 21:09:17,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:17,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695115904] [2022-07-13 21:09:17,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:17,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:17,854 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 21:09:17,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:17,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695115904] [2022-07-13 21:09:17,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695115904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:17,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:17,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:17,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570138104] [2022-07-13 21:09:17,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:17,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:17,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:17,858 INFO L87 Difference]: Start difference. First operand 3229 states and 5051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:19,333 INFO L93 Difference]: Finished difference Result 7672 states and 12176 transitions. [2022-07-13 21:09:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:19,346 INFO L225 Difference]: With dead ends: 7672 [2022-07-13 21:09:19,347 INFO L226 Difference]: Without dead ends: 4464 [2022-07-13 21:09:19,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:19,354 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1280 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:19,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1364 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:09:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2022-07-13 21:09:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 3229. [2022-07-13 21:09:19,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 2972 states have (on average 1.554172274562584) internal successors, (4619), 2981 states have internal predecessors, (4619), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-13 21:09:19,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 5042 transitions. [2022-07-13 21:09:19,683 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 5042 transitions. Word has length 178 [2022-07-13 21:09:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:19,683 INFO L495 AbstractCegarLoop]: Abstraction has 3229 states and 5042 transitions. [2022-07-13 21:09:19,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:19,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 5042 transitions. [2022-07-13 21:09:19,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:19,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:19,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:19,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:09:19,687 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1961703886, now seen corresponding path program 1 times [2022-07-13 21:09:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:19,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42907433] [2022-07-13 21:09:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:19,840 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 21:09:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:19,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42907433] [2022-07-13 21:09:19,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42907433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:19,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:19,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565674668] [2022-07-13 21:09:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:19,843 INFO L87 Difference]: Start difference. First operand 3229 states and 5042 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:23,251 INFO L93 Difference]: Finished difference Result 11406 states and 18020 transitions. [2022-07-13 21:09:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:23,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:23,279 INFO L225 Difference]: With dead ends: 11406 [2022-07-13 21:09:23,279 INFO L226 Difference]: Without dead ends: 8198 [2022-07-13 21:09:23,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:23,290 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 1553 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:23,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 2832 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3020 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:09:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2022-07-13 21:09:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 6079. [2022-07-13 21:09:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 5598 states have (on average 1.549660593068953) internal successors, (8675), 5615 states have internal predecessors, (8675), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-13 21:09:23,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 9496 transitions. [2022-07-13 21:09:23,824 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 9496 transitions. Word has length 178 [2022-07-13 21:09:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:23,824 INFO L495 AbstractCegarLoop]: Abstraction has 6079 states and 9496 transitions. [2022-07-13 21:09:23,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 9496 transitions. [2022-07-13 21:09:23,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:23,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:23,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:23,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:09:23,829 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:23,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1010084464, now seen corresponding path program 1 times [2022-07-13 21:09:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:23,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591746027] [2022-07-13 21:09:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:23,952 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 21:09:23,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:23,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591746027] [2022-07-13 21:09:23,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591746027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:23,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:23,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571011560] [2022-07-13 21:09:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:23,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:23,955 INFO L87 Difference]: Start difference. First operand 6079 states and 9496 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:26,070 INFO L93 Difference]: Finished difference Result 14318 states and 22667 transitions. [2022-07-13 21:09:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:26,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:26,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:26,095 INFO L225 Difference]: With dead ends: 14318 [2022-07-13 21:09:26,095 INFO L226 Difference]: Without dead ends: 8260 [2022-07-13 21:09:26,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:26,113 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1114 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1425 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:26,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1547 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1425 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:09:26,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8260 states. [2022-07-13 21:09:26,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8260 to 6079. [2022-07-13 21:09:26,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6079 states, 5598 states have (on average 1.5466237942122187) internal successors, (8658), 5615 states have internal predecessors, (8658), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-13 21:09:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6079 states to 6079 states and 9479 transitions. [2022-07-13 21:09:26,702 INFO L78 Accepts]: Start accepts. Automaton has 6079 states and 9479 transitions. Word has length 178 [2022-07-13 21:09:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:26,703 INFO L495 AbstractCegarLoop]: Abstraction has 6079 states and 9479 transitions. [2022-07-13 21:09:26,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6079 states and 9479 transitions. [2022-07-13 21:09:26,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:26,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:26,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:09:26,708 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:26,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1348372014, now seen corresponding path program 1 times [2022-07-13 21:09:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:26,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909084491] [2022-07-13 21:09:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:26,853 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 21:09:26,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:26,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909084491] [2022-07-13 21:09:26,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909084491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:26,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:26,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:26,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6183239] [2022-07-13 21:09:26,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:26,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:26,856 INFO L87 Difference]: Start difference. First operand 6079 states and 9479 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:31,304 INFO L93 Difference]: Finished difference Result 21738 states and 34260 transitions. [2022-07-13 21:09:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:09:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:31,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:31,349 INFO L225 Difference]: With dead ends: 21738 [2022-07-13 21:09:31,350 INFO L226 Difference]: Without dead ends: 15680 [2022-07-13 21:09:31,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:09:31,369 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 1541 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1560 SdHoareTripleChecker+Valid, 2817 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:31,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1560 Valid, 2817 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:09:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15680 states. [2022-07-13 21:09:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15680 to 11826. [2022-07-13 21:09:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11826 states, 10897 states have (on average 1.5439111682114344) internal successors, (16824), 10930 states have internal predecessors, (16824), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-13 21:09:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11826 states to 11826 states and 18495 transitions. [2022-07-13 21:09:32,505 INFO L78 Accepts]: Start accepts. Automaton has 11826 states and 18495 transitions. Word has length 178 [2022-07-13 21:09:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:32,505 INFO L495 AbstractCegarLoop]: Abstraction has 11826 states and 18495 transitions. [2022-07-13 21:09:32,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 11826 states and 18495 transitions. [2022-07-13 21:09:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:32,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:32,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:32,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:09:32,514 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1774926512, now seen corresponding path program 1 times [2022-07-13 21:09:32,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:32,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055411236] [2022-07-13 21:09:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:32,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:32,641 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 21:09:32,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:32,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055411236] [2022-07-13 21:09:32,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055411236] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:32,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:32,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:32,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016988553] [2022-07-13 21:09:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:32,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:32,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:32,643 INFO L87 Difference]: Start difference. First operand 11826 states and 18495 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:35,921 INFO L93 Difference]: Finished difference Result 27648 states and 43810 transitions. [2022-07-13 21:09:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:09:35,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:35,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:35,974 INFO L225 Difference]: With dead ends: 27648 [2022-07-13 21:09:35,974 INFO L226 Difference]: Without dead ends: 15843 [2022-07-13 21:09:36,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:09:36,003 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1161 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:36,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1512 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:09:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15843 states. [2022-07-13 21:09:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15843 to 11826. [2022-07-13 21:09:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11826 states, 10897 states have (on average 1.5408828117830595) internal successors, (16791), 10930 states have internal predecessors, (16791), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-13 21:09:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11826 states to 11826 states and 18462 transitions. [2022-07-13 21:09:37,168 INFO L78 Accepts]: Start accepts. Automaton has 11826 states and 18462 transitions. Word has length 178 [2022-07-13 21:09:37,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:37,168 INFO L495 AbstractCegarLoop]: Abstraction has 11826 states and 18462 transitions. [2022-07-13 21:09:37,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 11826 states and 18462 transitions. [2022-07-13 21:09:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:37,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:37,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:37,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:09:37,175 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1234497006, now seen corresponding path program 1 times [2022-07-13 21:09:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:37,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394297071] [2022-07-13 21:09:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:37,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:37,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:37,337 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 21:09:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:37,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394297071] [2022-07-13 21:09:37,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394297071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:37,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:37,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:37,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596922038] [2022-07-13 21:09:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:37,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:37,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:37,340 INFO L87 Difference]: Start difference. First operand 11826 states and 18462 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:09:45,149 INFO L93 Difference]: Finished difference Result 47721 states and 75080 transitions. [2022-07-13 21:09:45,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:09:45,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:09:45,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:09:45,263 INFO L225 Difference]: With dead ends: 47721 [2022-07-13 21:09:45,263 INFO L226 Difference]: Without dead ends: 35916 [2022-07-13 21:09:45,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:09:45,301 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 1979 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:09:45,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 2792 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:09:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35916 states. [2022-07-13 21:09:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35916 to 23124. [2022-07-13 21:09:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23124 states, 21331 states have (on average 1.539684027940556) internal successors, (32843), 21396 states have internal predecessors, (32843), 1338 states have call successors, (1338), 390 states have call predecessors, (1338), 454 states have return successors, (2131), 1401 states have call predecessors, (2131), 1338 states have call successors, (2131) [2022-07-13 21:09:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23124 states to 23124 states and 36312 transitions. [2022-07-13 21:09:47,878 INFO L78 Accepts]: Start accepts. Automaton has 23124 states and 36312 transitions. Word has length 178 [2022-07-13 21:09:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:09:47,878 INFO L495 AbstractCegarLoop]: Abstraction has 23124 states and 36312 transitions. [2022-07-13 21:09:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:09:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 23124 states and 36312 transitions. [2022-07-13 21:09:47,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:09:47,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:09:47,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:09:47,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:09:47,892 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:09:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:09:47,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1078516464, now seen corresponding path program 1 times [2022-07-13 21:09:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:09:47,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25395] [2022-07-13 21:09:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:09:47,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:09:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:47,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:09:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:09:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:09:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:09:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:09:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:09:48,030 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 21:09:48,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:09:48,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25395] [2022-07-13 21:09:48,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:09:48,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:09:48,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:09:48,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133122172] [2022-07-13 21:09:48,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:09:48,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:09:48,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:09:48,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:09:48,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:09:48,033 INFO L87 Difference]: Start difference. First operand 23124 states and 36312 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:10:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:10:01,607 INFO L93 Difference]: Finished difference Result 92873 states and 146928 transitions. [2022-07-13 21:10:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:10:01,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:10:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:10:01,812 INFO L225 Difference]: With dead ends: 92873 [2022-07-13 21:10:01,812 INFO L226 Difference]: Without dead ends: 69770 [2022-07-13 21:10:01,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:10:01,880 INFO L413 NwaCegarLoop]: 1098 mSDtfsCounter, 1635 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 3455 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 3542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:10:01,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 2963 Invalid, 3542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3455 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:10:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69770 states. [2022-07-13 21:10:07,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69770 to 45845. [2022-07-13 21:10:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45845 states, 42356 states have (on average 1.5400179431485503) internal successors, (65229), 42485 states have internal predecessors, (65229), 2586 states have call successors, (2586), 774 states have call predecessors, (2586), 902 states have return successors, (4901), 2713 states have call predecessors, (4901), 2586 states have call successors, (4901) [2022-07-13 21:10:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45845 states to 45845 states and 72716 transitions. [2022-07-13 21:10:07,308 INFO L78 Accepts]: Start accepts. Automaton has 45845 states and 72716 transitions. Word has length 178 [2022-07-13 21:10:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:10:07,309 INFO L495 AbstractCegarLoop]: Abstraction has 45845 states and 72716 transitions. [2022-07-13 21:10:07,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:10:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 45845 states and 72716 transitions. [2022-07-13 21:10:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:10:07,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:10:07,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:10:07,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:10:07,329 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:10:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:10:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1489126830, now seen corresponding path program 1 times [2022-07-13 21:10:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:10:07,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527049471] [2022-07-13 21:10:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:10:07,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:10:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:10:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:10:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:10:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:10:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:10:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:07,448 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 21:10:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:10:07,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527049471] [2022-07-13 21:10:07,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527049471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:10:07,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:10:07,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:10:07,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074203195] [2022-07-13 21:10:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:10:07,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:10:07,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:10:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:10:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:10:07,451 INFO L87 Difference]: Start difference. First operand 45845 states and 72716 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:10:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:10:30,615 INFO L93 Difference]: Finished difference Result 182408 states and 291382 transitions. [2022-07-13 21:10:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:10:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:10:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:10:31,048 INFO L225 Difference]: With dead ends: 182408 [2022-07-13 21:10:31,049 INFO L226 Difference]: Without dead ends: 136584 [2022-07-13 21:10:31,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:10:31,180 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1900 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 2933 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:10:31,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 2786 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2933 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 21:10:31,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136584 states. [2022-07-13 21:10:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136584 to 91222. [2022-07-13 21:10:42,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91222 states, 84405 states have (on average 1.540939517801078) internal successors, (130063), 84662 states have internal predecessors, (130063), 5018 states have call successors, (5018), 1542 states have call predecessors, (5018), 1798 states have return successors, (11835), 5273 states have call predecessors, (11835), 5018 states have call successors, (11835) [2022-07-13 21:10:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91222 states to 91222 states and 146916 transitions. [2022-07-13 21:10:42,605 INFO L78 Accepts]: Start accepts. Automaton has 91222 states and 146916 transitions. Word has length 178 [2022-07-13 21:10:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:10:42,605 INFO L495 AbstractCegarLoop]: Abstraction has 91222 states and 146916 transitions. [2022-07-13 21:10:42,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:10:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 91222 states and 146916 transitions. [2022-07-13 21:10:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 21:10:42,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:10:42,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:10:42,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:10:42,647 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:10:42,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:10:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash -298742992, now seen corresponding path program 1 times [2022-07-13 21:10:42,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:10:42,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372920370] [2022-07-13 21:10:42,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:10:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:10:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:42,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:10:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:10:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:10:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:10:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:10:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:10:42,788 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 21:10:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:10:42,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372920370] [2022-07-13 21:10:42,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372920370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:10:42,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:10:42,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:10:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688770226] [2022-07-13 21:10:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:10:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:10:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:10:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:10:42,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:10:42,790 INFO L87 Difference]: Start difference. First operand 91222 states and 146916 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 21:11:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:11:29,580 INFO L93 Difference]: Finished difference Result 359111 states and 582348 transitions. [2022-07-13 21:11:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:11:29,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 178 [2022-07-13 21:11:29,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:11:30,658 INFO L225 Difference]: With dead ends: 359111 [2022-07-13 21:11:30,658 INFO L226 Difference]: Without dead ends: 267910 [2022-07-13 21:11:30,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:11:30,904 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 1616 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:11:30,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 2919 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:11:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267910 states.