./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4859a4cdb98a3caca502aed15b30b6d563e2037c3c786a209b1853d003f6e66c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 18:53:51,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:53:51,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:53:51,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:53:51,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:53:51,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:53:51,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:53:51,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:53:51,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:53:51,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:53:51,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:53:51,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:53:51,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:53:51,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:53:51,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:53:51,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:53:51,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:53:51,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:53:51,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:53:51,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:53:51,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:53:51,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:53:51,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:53:51,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:53:51,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:53:51,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:53:51,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:53:51,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:53:51,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:53:51,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:53:51,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:53:51,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:53:51,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:53:51,718 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:53:51,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:53:51,719 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:53:51,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:53:51,720 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:53:51,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:53:51,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:53:51,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:53:51,722 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:53:51,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:53:51,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:53:51,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:53:51,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:53:51,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:53:51,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:53:51,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:53:51,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:53:51,752 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:53:51,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:53:51,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:53:51,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:51,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:53:51,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:53:51,754 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4859a4cdb98a3caca502aed15b30b6d563e2037c3c786a209b1853d003f6e66c [2021-12-17 18:53:51,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:53:51,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:53:51,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:53:51,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:53:51,975 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:53:51,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c [2021-12-17 18:53:52,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d52a4d1/1e077681651e4717bd27d3ce29a75990/FLAGccd7894a0 [2021-12-17 18:53:52,682 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:53:52,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.15.cil.c [2021-12-17 18:53:52,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d52a4d1/1e077681651e4717bd27d3ce29a75990/FLAGccd7894a0 [2021-12-17 18:53:53,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d52a4d1/1e077681651e4717bd27d3ce29a75990 [2021-12-17 18:53:53,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:53:53,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:53:53,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:53,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:53:53,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:53:53,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:53" (1/1) ... [2021-12-17 18:53:53,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d91ada2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:53, skipping insertion in model container [2021-12-17 18:53:53,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:53:53" (1/1) ... [2021-12-17 18:53:53,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:53:53,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:53:54,412 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/Problem05_label42+token_ring.15.cil.c[378560,378573] [2021-12-17 18:53:54,433 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/Problem05_label42+token_ring.15.cil.c[383339,383352] [2021-12-17 18:53:54,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:54,665 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:53:55,260 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/Problem05_label42+token_ring.15.cil.c[378560,378573] [2021-12-17 18:53:55,267 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/Problem05_label42+token_ring.15.cil.c[383339,383352] [2021-12-17 18:53:55,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:53:55,336 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:53:55,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55 WrapperNode [2021-12-17 18:53:55,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:53:55,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:55,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:53:55,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:53:55,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,640 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2021-12-17 18:53:55,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:53:55,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:53:55,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:53:55,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:53:55,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:55,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:56,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:53:56,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:53:56,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:53:56,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:53:56,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (1/1) ... [2021-12-17 18:53:56,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:53:56,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:53:56,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 18:53:56,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 18:53:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:53:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:53:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:53:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:53:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:53:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:53:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:53:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 18:53:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 18:53:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:53:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:53:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:53:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:53:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:53:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:53:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:53:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:53:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:53:56,421 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:53:56,422 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:54:00,873 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:54:00,899 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:54:00,899 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-17 18:54:00,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:54:00 BoogieIcfgContainer [2021-12-17 18:54:00,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:54:00,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:54:00,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:54:00,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:54:00,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:53:53" (1/3) ... [2021-12-17 18:54:00,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff0144c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:54:00, skipping insertion in model container [2021-12-17 18:54:00,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:53:55" (2/3) ... [2021-12-17 18:54:00,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff0144c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:54:00, skipping insertion in model container [2021-12-17 18:54:00,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:54:00" (3/3) ... [2021-12-17 18:54:00,908 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.15.cil.c [2021-12-17 18:54:00,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:54:00,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:54:00,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:54:00,951 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 18:54:00,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:54:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-17 18:54:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:01,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:01,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:01,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:01,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-12-17 18:54:01,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:01,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922611850] [2021-12-17 18:54:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:01,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:01,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:01,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922611850] [2021-12-17 18:54:01,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922611850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:01,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:01,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:54:01,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164278656] [2021-12-17 18:54:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:01,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:54:01,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:01,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:54:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:54:01,455 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:03,056 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2021-12-17 18:54:03,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:54:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:03,076 INFO L225 Difference]: With dead ends: 5336 [2021-12-17 18:54:03,076 INFO L226 Difference]: Without dead ends: 2681 [2021-12-17 18:54:03,082 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:03,084 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 1117 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:03,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 17259 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:54:03,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-17 18:54:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-17 18:54:03,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:54:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2021-12-17 18:54:03,185 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2021-12-17 18:54:03,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:03,185 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2021-12-17 18:54:03,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2021-12-17 18:54:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:03,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:03,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:03,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:54:03,189 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2021-12-17 18:54:03,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:03,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664068119] [2021-12-17 18:54:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:03,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:03,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:03,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664068119] [2021-12-17 18:54:03,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664068119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:03,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:03,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:54:03,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263899574] [2021-12-17 18:54:03,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:03,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:54:03,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:03,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:54:03,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:54:03,336 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:04,565 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2021-12-17 18:54:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:54:04,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:04,575 INFO L225 Difference]: With dead ends: 3071 [2021-12-17 18:54:04,576 INFO L226 Difference]: Without dead ends: 2681 [2021-12-17 18:54:04,578 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:04,579 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 1103 mSDsluCounter, 12319 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 16986 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:04,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 16986 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:04,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-17 18:54:04,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-17 18:54:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:54:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2021-12-17 18:54:04,636 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2021-12-17 18:54:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:04,637 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2021-12-17 18:54:04,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2021-12-17 18:54:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:04,639 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:04,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:04,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:54:04,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2021-12-17 18:54:04,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989496263] [2021-12-17 18:54:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:04,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:04,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:04,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:04,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:04,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:04,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989496263] [2021-12-17 18:54:04,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989496263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:04,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:04,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:54:04,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005398505] [2021-12-17 18:54:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:04,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:54:04,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:54:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:54:04,793 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:06,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:06,262 INFO L93 Difference]: Finished difference Result 3066 states and 5471 transitions. [2021-12-17 18:54:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:54:06,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:06,270 INFO L225 Difference]: With dead ends: 3066 [2021-12-17 18:54:06,271 INFO L226 Difference]: Without dead ends: 2680 [2021-12-17 18:54:06,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 18:54:06,276 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 5052 mSDsluCounter, 12596 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5073 SdHoareTripleChecker+Valid, 17217 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:06,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5073 Valid, 17217 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:54:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2680 states. [2021-12-17 18:54:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2680 to 2528. [2021-12-17 18:54:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8237655560016057) internal successors, (4543), 2494 states have internal predecessors, (4543), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:54:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4599 transitions. [2021-12-17 18:54:06,330 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4599 transitions. Word has length 190 [2021-12-17 18:54:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:06,330 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4599 transitions. [2021-12-17 18:54:06,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:06,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4599 transitions. [2021-12-17 18:54:06,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:06,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:06,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:06,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:54:06,333 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash -166101128, now seen corresponding path program 1 times [2021-12-17 18:54:06,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:06,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304613720] [2021-12-17 18:54:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:06,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:06,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:06,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304613720] [2021-12-17 18:54:06,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304613720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:06,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:06,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:06,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800939866] [2021-12-17 18:54:06,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:06,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:06,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:06,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:06,481 INFO L87 Difference]: Start difference. First operand 2528 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:07,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:07,897 INFO L93 Difference]: Finished difference Result 3065 states and 5469 transitions. [2021-12-17 18:54:07,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:54:07,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:07,906 INFO L225 Difference]: With dead ends: 3065 [2021-12-17 18:54:07,906 INFO L226 Difference]: Without dead ends: 2679 [2021-12-17 18:54:07,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 18:54:07,908 INFO L933 BasicCegarLoop]: 4611 mSDtfsCounter, 5156 mSDsluCounter, 16844 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5177 SdHoareTripleChecker+Valid, 21455 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:07,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5177 Valid, 21455 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:54:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2021-12-17 18:54:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2528. [2021-12-17 18:54:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8225612203934163) internal successors, (4540), 2494 states have internal predecessors, (4540), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:54:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4596 transitions. [2021-12-17 18:54:07,955 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4596 transitions. Word has length 190 [2021-12-17 18:54:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:07,955 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4596 transitions. [2021-12-17 18:54:07,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4596 transitions. [2021-12-17 18:54:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:07,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:07,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:07,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:54:07,957 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1852527356, now seen corresponding path program 1 times [2021-12-17 18:54:07,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:07,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465971424] [2021-12-17 18:54:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:07,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:07,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:08,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:08,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:08,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465971424] [2021-12-17 18:54:08,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465971424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:08,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:08,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:08,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236030220] [2021-12-17 18:54:08,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:08,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:08,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:08,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:08,098 INFO L87 Difference]: Start difference. First operand 2528 states and 4596 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:09,474 INFO L93 Difference]: Finished difference Result 3091 states and 5511 transitions. [2021-12-17 18:54:09,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:09,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:09,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:09,483 INFO L225 Difference]: With dead ends: 3091 [2021-12-17 18:54:09,484 INFO L226 Difference]: Without dead ends: 2705 [2021-12-17 18:54:09,485 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:09,487 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5329 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 17332 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:09,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5350 Valid, 17332 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:09,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2021-12-17 18:54:09,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2528. [2021-12-17 18:54:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8221597751906864) internal successors, (4539), 2494 states have internal predecessors, (4539), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:54:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4595 transitions. [2021-12-17 18:54:09,548 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4595 transitions. Word has length 190 [2021-12-17 18:54:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:09,549 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4595 transitions. [2021-12-17 18:54:09,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4595 transitions. [2021-12-17 18:54:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:09,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:09,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:09,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:54:09,552 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1943883138, now seen corresponding path program 1 times [2021-12-17 18:54:09,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:09,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305224960] [2021-12-17 18:54:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:09,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:09,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:09,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305224960] [2021-12-17 18:54:09,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305224960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:09,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:09,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:09,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395009646] [2021-12-17 18:54:09,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:09,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:09,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:09,686 INFO L87 Difference]: Start difference. First operand 2528 states and 4595 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:11,051 INFO L93 Difference]: Finished difference Result 3090 states and 5506 transitions. [2021-12-17 18:54:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:11,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:11,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:11,061 INFO L225 Difference]: With dead ends: 3090 [2021-12-17 18:54:11,061 INFO L226 Difference]: Without dead ends: 2704 [2021-12-17 18:54:11,063 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:11,064 INFO L933 BasicCegarLoop]: 4654 mSDtfsCounter, 5327 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 17328 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:11,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 17328 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:11,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2021-12-17 18:54:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2528. [2021-12-17 18:54:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8217583299879567) internal successors, (4538), 2494 states have internal predecessors, (4538), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 18:54:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4594 transitions. [2021-12-17 18:54:11,121 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4594 transitions. Word has length 190 [2021-12-17 18:54:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:11,121 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4594 transitions. [2021-12-17 18:54:11,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:11,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4594 transitions. [2021-12-17 18:54:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:11,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:11,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:11,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:54:11,124 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:11,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:11,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1373611332, now seen corresponding path program 1 times [2021-12-17 18:54:11,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:11,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666309755] [2021-12-17 18:54:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:11,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:11,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:11,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666309755] [2021-12-17 18:54:11,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666309755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:11,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:11,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:54:11,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611789804] [2021-12-17 18:54:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:11,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:54:11,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:54:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:11,263 INFO L87 Difference]: Start difference. First operand 2528 states and 4594 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:14,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:14,049 INFO L93 Difference]: Finished difference Result 3648 states and 6399 transitions. [2021-12-17 18:54:14,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:54:14,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:14,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:14,060 INFO L225 Difference]: With dead ends: 3648 [2021-12-17 18:54:14,060 INFO L226 Difference]: Without dead ends: 3262 [2021-12-17 18:54:14,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 18:54:14,064 INFO L933 BasicCegarLoop]: 5030 mSDtfsCounter, 6136 mSDsluCounter, 18272 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6157 SdHoareTripleChecker+Valid, 23302 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:14,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6157 Valid, 23302 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-17 18:54:14,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-12-17 18:54:14,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2932. [2021-12-17 18:54:14,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7905759162303665) internal successors, (5130), 2869 states have internal predecessors, (5130), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5235 transitions. [2021-12-17 18:54:14,148 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5235 transitions. Word has length 190 [2021-12-17 18:54:14,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:14,148 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5235 transitions. [2021-12-17 18:54:14,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5235 transitions. [2021-12-17 18:54:14,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:14,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:14,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:14,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:54:14,151 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:14,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash 30257854, now seen corresponding path program 1 times [2021-12-17 18:54:14,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:14,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344042132] [2021-12-17 18:54:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:14,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:14,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:14,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:14,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:14,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:14,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344042132] [2021-12-17 18:54:14,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344042132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:14,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:14,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:14,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329576974] [2021-12-17 18:54:14,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:14,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:14,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:14,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:14,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:14,305 INFO L87 Difference]: Start difference. First operand 2932 states and 5235 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:15,603 INFO L93 Difference]: Finished difference Result 4093 states and 7125 transitions. [2021-12-17 18:54:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:15,615 INFO L225 Difference]: With dead ends: 4093 [2021-12-17 18:54:15,615 INFO L226 Difference]: Without dead ends: 3303 [2021-12-17 18:54:15,617 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:15,618 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 5412 mSDsluCounter, 12672 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5433 SdHoareTripleChecker+Valid, 17273 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:15,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5433 Valid, 17273 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2021-12-17 18:54:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 2932. [2021-12-17 18:54:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7898778359511345) internal successors, (5128), 2869 states have internal predecessors, (5128), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5233 transitions. [2021-12-17 18:54:15,684 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5233 transitions. Word has length 190 [2021-12-17 18:54:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:15,684 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5233 transitions. [2021-12-17 18:54:15,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5233 transitions. [2021-12-17 18:54:15,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:15,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:15,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:15,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:54:15,687 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:15,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:15,687 INFO L85 PathProgramCache]: Analyzing trace with hash -755740036, now seen corresponding path program 1 times [2021-12-17 18:54:15,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:15,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272606676] [2021-12-17 18:54:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:15,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:15,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:15,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272606676] [2021-12-17 18:54:15,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272606676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:15,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:15,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:15,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995058621] [2021-12-17 18:54:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:15,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:15,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:15,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:15,827 INFO L87 Difference]: Start difference. First operand 2932 states and 5233 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:17,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:17,110 INFO L93 Difference]: Finished difference Result 4090 states and 7113 transitions. [2021-12-17 18:54:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:17,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:17,127 INFO L225 Difference]: With dead ends: 4090 [2021-12-17 18:54:17,128 INFO L226 Difference]: Without dead ends: 3300 [2021-12-17 18:54:17,130 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:17,132 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 5324 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5345 SdHoareTripleChecker+Valid, 17316 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:17,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5345 Valid, 17316 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-12-17 18:54:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2932. [2021-12-17 18:54:17,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7891797556719022) internal successors, (5126), 2869 states have internal predecessors, (5126), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5231 transitions. [2021-12-17 18:54:17,198 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5231 transitions. Word has length 190 [2021-12-17 18:54:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:17,199 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5231 transitions. [2021-12-17 18:54:17,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5231 transitions. [2021-12-17 18:54:17,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:17,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:17,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:17,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:54:17,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:17,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash -88358146, now seen corresponding path program 1 times [2021-12-17 18:54:17,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:17,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129757361] [2021-12-17 18:54:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:17,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:17,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:17,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:17,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:17,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129757361] [2021-12-17 18:54:17,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129757361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:17,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:17,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:17,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345804825] [2021-12-17 18:54:17,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:17,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:17,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:17,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:17,328 INFO L87 Difference]: Start difference. First operand 2932 states and 5231 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:18,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:18,560 INFO L93 Difference]: Finished difference Result 4087 states and 7101 transitions. [2021-12-17 18:54:18,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:18,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:18,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:18,569 INFO L225 Difference]: With dead ends: 4087 [2021-12-17 18:54:18,570 INFO L226 Difference]: Without dead ends: 3297 [2021-12-17 18:54:18,572 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:18,573 INFO L933 BasicCegarLoop]: 4638 mSDtfsCounter, 5322 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 17312 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:18,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5343 Valid, 17312 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:18,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2021-12-17 18:54:18,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 2932. [2021-12-17 18:54:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7884816753926702) internal successors, (5124), 2869 states have internal predecessors, (5124), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5229 transitions. [2021-12-17 18:54:18,646 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5229 transitions. Word has length 190 [2021-12-17 18:54:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:18,647 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5229 transitions. [2021-12-17 18:54:18,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5229 transitions. [2021-12-17 18:54:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:18,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:18,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:18,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:54:18,650 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 2011380284, now seen corresponding path program 1 times [2021-12-17 18:54:18,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:18,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26714339] [2021-12-17 18:54:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:18,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:18,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:18,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:18,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26714339] [2021-12-17 18:54:18,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26714339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:18,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:18,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:18,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383041067] [2021-12-17 18:54:18,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:18,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:18,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:18,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:18,776 INFO L87 Difference]: Start difference. First operand 2932 states and 5229 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:20,048 INFO L93 Difference]: Finished difference Result 4084 states and 7089 transitions. [2021-12-17 18:54:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:20,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:20,054 INFO L225 Difference]: With dead ends: 4084 [2021-12-17 18:54:20,055 INFO L226 Difference]: Without dead ends: 3294 [2021-12-17 18:54:20,057 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:20,057 INFO L933 BasicCegarLoop]: 4632 mSDtfsCounter, 5323 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5344 SdHoareTripleChecker+Valid, 17306 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:20,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5344 Valid, 17306 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2021-12-17 18:54:20,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 2932. [2021-12-17 18:54:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.787783595113438) internal successors, (5122), 2869 states have internal predecessors, (5122), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5227 transitions. [2021-12-17 18:54:20,125 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5227 transitions. Word has length 190 [2021-12-17 18:54:20,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:20,125 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5227 transitions. [2021-12-17 18:54:20,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:20,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5227 transitions. [2021-12-17 18:54:20,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:20,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:20,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:20,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:54:20,128 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1938758850, now seen corresponding path program 1 times [2021-12-17 18:54:20,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:20,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409541952] [2021-12-17 18:54:20,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:20,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:20,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409541952] [2021-12-17 18:54:20,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409541952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:20,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:20,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:20,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805675216] [2021-12-17 18:54:20,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:20,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:20,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:20,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:20,275 INFO L87 Difference]: Start difference. First operand 2932 states and 5227 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:21,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:21,555 INFO L93 Difference]: Finished difference Result 4078 states and 7071 transitions. [2021-12-17 18:54:21,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:21,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:21,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:21,561 INFO L225 Difference]: With dead ends: 4078 [2021-12-17 18:54:21,562 INFO L226 Difference]: Without dead ends: 3288 [2021-12-17 18:54:21,564 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:21,564 INFO L933 BasicCegarLoop]: 4626 mSDtfsCounter, 5319 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5340 SdHoareTripleChecker+Valid, 17300 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:21,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5340 Valid, 17300 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2021-12-17 18:54:21,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 2932. [2021-12-17 18:54:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.787085514834206) internal successors, (5120), 2869 states have internal predecessors, (5120), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5225 transitions. [2021-12-17 18:54:21,628 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5225 transitions. Word has length 190 [2021-12-17 18:54:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:21,628 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5225 transitions. [2021-12-17 18:54:21,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:21,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5225 transitions. [2021-12-17 18:54:21,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:21,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:21,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:21,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:54:21,630 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:21,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:21,630 INFO L85 PathProgramCache]: Analyzing trace with hash 586736832, now seen corresponding path program 1 times [2021-12-17 18:54:21,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:21,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673127815] [2021-12-17 18:54:21,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:21,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:21,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:21,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:21,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673127815] [2021-12-17 18:54:21,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673127815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:21,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:21,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:21,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308503592] [2021-12-17 18:54:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:21,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:21,744 INFO L87 Difference]: Start difference. First operand 2932 states and 5225 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:22,989 INFO L93 Difference]: Finished difference Result 4075 states and 7059 transitions. [2021-12-17 18:54:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:22,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:22,996 INFO L225 Difference]: With dead ends: 4075 [2021-12-17 18:54:22,996 INFO L226 Difference]: Without dead ends: 3285 [2021-12-17 18:54:22,998 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:22,999 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 5317 mSDsluCounter, 12674 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5338 SdHoareTripleChecker+Valid, 17296 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:22,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5338 Valid, 17296 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 18:54:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2021-12-17 18:54:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 2932. [2021-12-17 18:54:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7863874345549737) internal successors, (5118), 2869 states have internal predecessors, (5118), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5223 transitions. [2021-12-17 18:54:23,064 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5223 transitions. Word has length 190 [2021-12-17 18:54:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:23,064 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5223 transitions. [2021-12-17 18:54:23,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5223 transitions. [2021-12-17 18:54:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:23,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:23,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:23,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:54:23,066 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:23,067 INFO L85 PathProgramCache]: Analyzing trace with hash -24532226, now seen corresponding path program 1 times [2021-12-17 18:54:23,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:23,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029695856] [2021-12-17 18:54:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:23,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:23,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:23,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029695856] [2021-12-17 18:54:23,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029695856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:23,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:23,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:23,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721551792] [2021-12-17 18:54:23,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:23,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:23,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:23,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:23,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:23,190 INFO L87 Difference]: Start difference. First operand 2932 states and 5223 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:24,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:24,697 INFO L93 Difference]: Finished difference Result 4072 states and 7047 transitions. [2021-12-17 18:54:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:24,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:24,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:24,704 INFO L225 Difference]: With dead ends: 4072 [2021-12-17 18:54:24,704 INFO L226 Difference]: Without dead ends: 3282 [2021-12-17 18:54:24,707 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:24,708 INFO L933 BasicCegarLoop]: 4618 mSDtfsCounter, 5137 mSDsluCounter, 16843 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5158 SdHoareTripleChecker+Valid, 21461 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:24,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5158 Valid, 21461 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:54:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2021-12-17 18:54:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 2932. [2021-12-17 18:54:24,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7856893542757417) internal successors, (5116), 2869 states have internal predecessors, (5116), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5221 transitions. [2021-12-17 18:54:24,778 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5221 transitions. Word has length 190 [2021-12-17 18:54:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:24,778 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5221 transitions. [2021-12-17 18:54:24,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5221 transitions. [2021-12-17 18:54:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:24,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:24,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:24,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:54:24,781 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1429723904, now seen corresponding path program 1 times [2021-12-17 18:54:24,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:24,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837262222] [2021-12-17 18:54:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:24,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:24,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:24,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:24,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:24,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:24,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837262222] [2021-12-17 18:54:24,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837262222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:24,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:24,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:24,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629309489] [2021-12-17 18:54:24,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:24,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:24,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:24,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:24,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:24,890 INFO L87 Difference]: Start difference. First operand 2932 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:26,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:26,124 INFO L93 Difference]: Finished difference Result 4069 states and 7035 transitions. [2021-12-17 18:54:26,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:26,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:26,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:26,130 INFO L225 Difference]: With dead ends: 4069 [2021-12-17 18:54:26,131 INFO L226 Difference]: Without dead ends: 3279 [2021-12-17 18:54:26,133 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:26,134 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 5365 mSDsluCounter, 12670 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5386 SdHoareTripleChecker+Valid, 17255 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:26,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5386 Valid, 17255 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3279 states. [2021-12-17 18:54:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3279 to 2932. [2021-12-17 18:54:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7849912739965097) internal successors, (5114), 2869 states have internal predecessors, (5114), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:26,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5219 transitions. [2021-12-17 18:54:26,202 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5219 transitions. Word has length 190 [2021-12-17 18:54:26,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:26,203 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5219 transitions. [2021-12-17 18:54:26,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:26,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5219 transitions. [2021-12-17 18:54:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:26,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:26,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:26,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 18:54:26,205 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:26,205 INFO L85 PathProgramCache]: Analyzing trace with hash 464609982, now seen corresponding path program 1 times [2021-12-17 18:54:26,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:26,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417725378] [2021-12-17 18:54:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:26,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:26,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:26,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:26,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417725378] [2021-12-17 18:54:26,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417725378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:26,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:26,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:26,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718202467] [2021-12-17 18:54:26,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:26,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:26,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:26,333 INFO L87 Difference]: Start difference. First operand 2932 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:27,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:27,886 INFO L93 Difference]: Finished difference Result 4066 states and 7023 transitions. [2021-12-17 18:54:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:27,893 INFO L225 Difference]: With dead ends: 4066 [2021-12-17 18:54:27,893 INFO L226 Difference]: Without dead ends: 3276 [2021-12-17 18:54:27,895 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:27,896 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5131 mSDsluCounter, 16841 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5152 SdHoareTripleChecker+Valid, 21451 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:27,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5152 Valid, 21451 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:54:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2021-12-17 18:54:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2932. [2021-12-17 18:54:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7842931937172775) internal successors, (5112), 2869 states have internal predecessors, (5112), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5217 transitions. [2021-12-17 18:54:28,020 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5217 transitions. Word has length 190 [2021-12-17 18:54:28,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:28,020 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5217 transitions. [2021-12-17 18:54:28,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5217 transitions. [2021-12-17 18:54:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:28,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:28,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:28,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 18:54:28,022 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1911190848, now seen corresponding path program 1 times [2021-12-17 18:54:28,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:28,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057803543] [2021-12-17 18:54:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:28,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:28,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:28,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057803543] [2021-12-17 18:54:28,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057803543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:28,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:28,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:28,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525345984] [2021-12-17 18:54:28,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:28,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:28,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:28,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:28,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:28,152 INFO L87 Difference]: Start difference. First operand 2932 states and 5217 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:29,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:29,385 INFO L93 Difference]: Finished difference Result 4063 states and 7011 transitions. [2021-12-17 18:54:29,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:29,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:29,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:29,408 INFO L225 Difference]: With dead ends: 4063 [2021-12-17 18:54:29,408 INFO L226 Difference]: Without dead ends: 3273 [2021-12-17 18:54:29,411 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:29,411 INFO L933 BasicCegarLoop]: 4606 mSDtfsCounter, 5307 mSDsluCounter, 12672 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5328 SdHoareTripleChecker+Valid, 17278 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:29,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5328 Valid, 17278 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2021-12-17 18:54:29,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2932. [2021-12-17 18:54:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7835951134380454) internal successors, (5110), 2869 states have internal predecessors, (5110), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5215 transitions. [2021-12-17 18:54:29,487 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5215 transitions. Word has length 190 [2021-12-17 18:54:29,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:29,488 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5215 transitions. [2021-12-17 18:54:29,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5215 transitions. [2021-12-17 18:54:29,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:29,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:29,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:29,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 18:54:29,490 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:29,491 INFO L85 PathProgramCache]: Analyzing trace with hash 988023422, now seen corresponding path program 1 times [2021-12-17 18:54:29,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:29,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234029389] [2021-12-17 18:54:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:29,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:29,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:29,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:29,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234029389] [2021-12-17 18:54:29,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234029389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:29,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:29,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:29,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897233286] [2021-12-17 18:54:29,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:29,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:29,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:29,608 INFO L87 Difference]: Start difference. First operand 2932 states and 5215 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:30,829 INFO L93 Difference]: Finished difference Result 4060 states and 6999 transitions. [2021-12-17 18:54:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:30,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:30,834 INFO L225 Difference]: With dead ends: 4060 [2021-12-17 18:54:30,834 INFO L226 Difference]: Without dead ends: 3270 [2021-12-17 18:54:30,836 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:30,836 INFO L933 BasicCegarLoop]: 4600 mSDtfsCounter, 5308 mSDsluCounter, 12672 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5329 SdHoareTripleChecker+Valid, 17272 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:30,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5329 Valid, 17272 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2021-12-17 18:54:30,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2932. [2021-12-17 18:54:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7828970331588132) internal successors, (5108), 2869 states have internal predecessors, (5108), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5213 transitions. [2021-12-17 18:54:30,907 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5213 transitions. Word has length 190 [2021-12-17 18:54:30,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:30,908 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5213 transitions. [2021-12-17 18:54:30,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:30,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5213 transitions. [2021-12-17 18:54:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:30,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:30,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:30,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 18:54:30,910 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1373885824, now seen corresponding path program 1 times [2021-12-17 18:54:30,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:30,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592153729] [2021-12-17 18:54:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:30,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:31,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:31,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592153729] [2021-12-17 18:54:31,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592153729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:31,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:31,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:31,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660287973] [2021-12-17 18:54:31,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:31,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:31,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:31,022 INFO L87 Difference]: Start difference. First operand 2932 states and 5213 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:32,454 INFO L93 Difference]: Finished difference Result 4054 states and 6981 transitions. [2021-12-17 18:54:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:32,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:32,459 INFO L225 Difference]: With dead ends: 4054 [2021-12-17 18:54:32,459 INFO L226 Difference]: Without dead ends: 3264 [2021-12-17 18:54:32,461 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:32,461 INFO L933 BasicCegarLoop]: 4594 mSDtfsCounter, 5126 mSDsluCounter, 16841 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5147 SdHoareTripleChecker+Valid, 21435 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:32,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5147 Valid, 21435 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2021-12-17 18:54:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 2932. [2021-12-17 18:54:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.7821989528795812) internal successors, (5106), 2869 states have internal predecessors, (5106), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5211 transitions. [2021-12-17 18:54:32,533 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5211 transitions. Word has length 190 [2021-12-17 18:54:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:32,533 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5211 transitions. [2021-12-17 18:54:32,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5211 transitions. [2021-12-17 18:54:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:32,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:32,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:32,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 18:54:32,535 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:32,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash -989955838, now seen corresponding path program 1 times [2021-12-17 18:54:32,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:32,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406200989] [2021-12-17 18:54:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:32,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:32,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:32,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406200989] [2021-12-17 18:54:32,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406200989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:32,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:32,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:32,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474441140] [2021-12-17 18:54:32,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:32,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:32,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:32,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:32,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:32,644 INFO L87 Difference]: Start difference. First operand 2932 states and 5211 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:33,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:33,903 INFO L93 Difference]: Finished difference Result 4051 states and 6969 transitions. [2021-12-17 18:54:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:33,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:33,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:33,909 INFO L225 Difference]: With dead ends: 4051 [2021-12-17 18:54:33,909 INFO L226 Difference]: Without dead ends: 3261 [2021-12-17 18:54:33,911 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:33,912 INFO L933 BasicCegarLoop]: 4590 mSDtfsCounter, 5302 mSDsluCounter, 12672 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 17262 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:33,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5323 Valid, 17262 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3261 states. [2021-12-17 18:54:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3261 to 2932. [2021-12-17 18:54:33,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2932 states, 2865 states have (on average 1.781500872600349) internal successors, (5104), 2869 states have internal predecessors, (5104), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 18:54:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 5209 transitions. [2021-12-17 18:54:33,988 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 5209 transitions. Word has length 190 [2021-12-17 18:54:33,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:33,988 INFO L470 AbstractCegarLoop]: Abstraction has 2932 states and 5209 transitions. [2021-12-17 18:54:33,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 5209 transitions. [2021-12-17 18:54:33,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:33,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:33,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:33,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 18:54:33,991 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1981832512, now seen corresponding path program 1 times [2021-12-17 18:54:33,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:33,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111776884] [2021-12-17 18:54:33,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:33,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:34,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:34,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:34,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111776884] [2021-12-17 18:54:34,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111776884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:34,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:34,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:54:34,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866988945] [2021-12-17 18:54:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:34,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:54:34,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:54:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:34,116 INFO L87 Difference]: Start difference. First operand 2932 states and 5209 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:36,848 INFO L93 Difference]: Finished difference Result 5346 states and 9003 transitions. [2021-12-17 18:54:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 18:54:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:36,856 INFO L225 Difference]: With dead ends: 5346 [2021-12-17 18:54:36,856 INFO L226 Difference]: Without dead ends: 4556 [2021-12-17 18:54:36,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 18:54:36,859 INFO L933 BasicCegarLoop]: 4931 mSDtfsCounter, 6355 mSDsluCounter, 18257 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6391 SdHoareTripleChecker+Valid, 23188 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:36,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6391 Valid, 23188 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 18:54:36,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2021-12-17 18:54:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 3734. [2021-12-17 18:54:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3607 states have (on average 1.733019129470474) internal successors, (6251), 3615 states have internal predecessors, (6251), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6456 transitions. [2021-12-17 18:54:36,991 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6456 transitions. Word has length 190 [2021-12-17 18:54:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:36,991 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 6456 transitions. [2021-12-17 18:54:36,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:36,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6456 transitions. [2021-12-17 18:54:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:36,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:36,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:36,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 18:54:36,994 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:36,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:36,995 INFO L85 PathProgramCache]: Analyzing trace with hash -416155326, now seen corresponding path program 1 times [2021-12-17 18:54:36,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:36,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280468296] [2021-12-17 18:54:36,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:36,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:37,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:37,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:37,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280468296] [2021-12-17 18:54:37,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280468296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:37,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:37,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:37,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491728795] [2021-12-17 18:54:37,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:37,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:37,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:37,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:37,106 INFO L87 Difference]: Start difference. First operand 3734 states and 6456 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:38,413 INFO L93 Difference]: Finished difference Result 5993 states and 10004 transitions. [2021-12-17 18:54:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:38,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:38,421 INFO L225 Difference]: With dead ends: 5993 [2021-12-17 18:54:38,422 INFO L226 Difference]: Without dead ends: 4401 [2021-12-17 18:54:38,426 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:38,426 INFO L933 BasicCegarLoop]: 4570 mSDtfsCounter, 5323 mSDsluCounter, 12670 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5344 SdHoareTripleChecker+Valid, 17240 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:38,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5344 Valid, 17240 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:38,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4401 states. [2021-12-17 18:54:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4401 to 3734. [2021-12-17 18:54:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3607 states have (on average 1.7319101746603827) internal successors, (6247), 3615 states have internal predecessors, (6247), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6452 transitions. [2021-12-17 18:54:38,562 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6452 transitions. Word has length 190 [2021-12-17 18:54:38,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:38,562 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 6452 transitions. [2021-12-17 18:54:38,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:38,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6452 transitions. [2021-12-17 18:54:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:38,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:38,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:38,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 18:54:38,564 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash -77867776, now seen corresponding path program 1 times [2021-12-17 18:54:38,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:38,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086120105] [2021-12-17 18:54:38,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:38,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:38,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:38,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086120105] [2021-12-17 18:54:38,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086120105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:38,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:38,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:38,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668091059] [2021-12-17 18:54:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:38,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:38,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:38,665 INFO L87 Difference]: Start difference. First operand 3734 states and 6452 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:40,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:40,211 INFO L93 Difference]: Finished difference Result 5984 states and 9974 transitions. [2021-12-17 18:54:40,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:40,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:40,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:40,218 INFO L225 Difference]: With dead ends: 5984 [2021-12-17 18:54:40,218 INFO L226 Difference]: Without dead ends: 4392 [2021-12-17 18:54:40,221 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:40,222 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 5121 mSDsluCounter, 16841 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5142 SdHoareTripleChecker+Valid, 21420 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:40,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5142 Valid, 21420 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:40,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-12-17 18:54:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 3734. [2021-12-17 18:54:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3607 states have (on average 1.7308012198502911) internal successors, (6243), 3615 states have internal predecessors, (6243), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6448 transitions. [2021-12-17 18:54:40,356 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6448 transitions. Word has length 190 [2021-12-17 18:54:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:40,357 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 6448 transitions. [2021-12-17 18:54:40,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6448 transitions. [2021-12-17 18:54:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:40,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:40,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:40,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 18:54:40,359 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 348686722, now seen corresponding path program 1 times [2021-12-17 18:54:40,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:40,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089613607] [2021-12-17 18:54:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:40,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:40,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:40,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:40,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:40,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089613607] [2021-12-17 18:54:40,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089613607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:40,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:40,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:40,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526821502] [2021-12-17 18:54:40,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:40,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:40,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:40,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:40,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:40,475 INFO L87 Difference]: Start difference. First operand 3734 states and 6448 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:41,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:41,999 INFO L93 Difference]: Finished difference Result 5975 states and 9944 transitions. [2021-12-17 18:54:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:41,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:41,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:42,007 INFO L225 Difference]: With dead ends: 5975 [2021-12-17 18:54:42,007 INFO L226 Difference]: Without dead ends: 4383 [2021-12-17 18:54:42,011 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:42,011 INFO L933 BasicCegarLoop]: 4575 mSDtfsCounter, 5119 mSDsluCounter, 16841 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5140 SdHoareTripleChecker+Valid, 21416 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:42,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5140 Valid, 21416 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 18:54:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4383 states. [2021-12-17 18:54:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4383 to 3734. [2021-12-17 18:54:42,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3607 states have (on average 1.7296922650401996) internal successors, (6239), 3615 states have internal predecessors, (6239), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:42,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6444 transitions. [2021-12-17 18:54:42,153 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6444 transitions. Word has length 190 [2021-12-17 18:54:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:42,153 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 6444 transitions. [2021-12-17 18:54:42,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6444 transitions. [2021-12-17 18:54:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:42,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:42,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:42,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 18:54:42,155 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash -191742784, now seen corresponding path program 1 times [2021-12-17 18:54:42,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:42,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696974828] [2021-12-17 18:54:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:42,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:42,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:42,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:42,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:42,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696974828] [2021-12-17 18:54:42,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696974828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:42,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:42,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:54:42,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901407332] [2021-12-17 18:54:42,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:42,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:54:42,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:42,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:54:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:54:42,260 INFO L87 Difference]: Start difference. First operand 3734 states and 6444 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:43,560 INFO L93 Difference]: Finished difference Result 5966 states and 9914 transitions. [2021-12-17 18:54:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:54:43,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:43,568 INFO L225 Difference]: With dead ends: 5966 [2021-12-17 18:54:43,568 INFO L226 Difference]: Without dead ends: 4374 [2021-12-17 18:54:43,573 INFO L932 BasicCegarLoop]: 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 [2021-12-17 18:54:43,573 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 5298 mSDsluCounter, 12672 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5319 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:43,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5319 Valid, 17241 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 18:54:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2021-12-17 18:54:43,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3734. [2021-12-17 18:54:43,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3607 states have (on average 1.728583310230108) internal successors, (6235), 3615 states have internal predecessors, (6235), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 18:54:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6440 transitions. [2021-12-17 18:54:43,720 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6440 transitions. Word has length 190 [2021-12-17 18:54:43,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:43,721 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 6440 transitions. [2021-12-17 18:54:43,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6440 transitions. [2021-12-17 18:54:43,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:43,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:43,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:43,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 18:54:43,723 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:43,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -347723326, now seen corresponding path program 1 times [2021-12-17 18:54:43,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:43,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056242461] [2021-12-17 18:54:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:43,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:43,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:43,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056242461] [2021-12-17 18:54:43,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056242461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:43,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:43,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 18:54:43,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441019009] [2021-12-17 18:54:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:43,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 18:54:43,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 18:54:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:43,852 INFO L87 Difference]: Start difference. First operand 3734 states and 6440 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:47,169 INFO L93 Difference]: Finished difference Result 8198 states and 13430 transitions. [2021-12-17 18:54:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 18:54:47,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:47,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:47,180 INFO L225 Difference]: With dead ends: 8198 [2021-12-17 18:54:47,180 INFO L226 Difference]: Without dead ends: 6606 [2021-12-17 18:54:47,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 18:54:47,184 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 5658 mSDsluCounter, 22609 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5678 SdHoareTripleChecker+Valid, 27519 SdHoareTripleChecker+Invalid, 3145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:47,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5678 Valid, 27519 Invalid, 3145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 18:54:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2021-12-17 18:54:47,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 5326. [2021-12-17 18:54:47,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 5075 states have (on average 1.670344827586207) internal successors, (8477), 5097 states have internal predecessors, (8477), 182 states have call successors, (182), 49 states have call predecessors, (182), 67 states have return successors, (243), 187 states have call predecessors, (243), 180 states have call successors, (243) [2021-12-17 18:54:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 8902 transitions. [2021-12-17 18:54:47,459 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 8902 transitions. Word has length 190 [2021-12-17 18:54:47,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:47,459 INFO L470 AbstractCegarLoop]: Abstraction has 5326 states and 8902 transitions. [2021-12-17 18:54:47,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 8902 transitions. [2021-12-17 18:54:47,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 18:54:47,463 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:47,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:47,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 18:54:47,463 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:47,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -2135593148, now seen corresponding path program 1 times [2021-12-17 18:54:47,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:47,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324256259] [2021-12-17 18:54:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:47,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:47,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:47,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:47,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:54:47,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:47,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324256259] [2021-12-17 18:54:47,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324256259] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:47,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:54:47,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:54:47,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989719658] [2021-12-17 18:54:47,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:47,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:54:47,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:47,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:54:47,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:54:47,571 INFO L87 Difference]: Start difference. First operand 5326 states and 8902 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:50,778 INFO L93 Difference]: Finished difference Result 14055 states and 22500 transitions. [2021-12-17 18:54:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:54:50,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 18:54:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:50,802 INFO L225 Difference]: With dead ends: 14055 [2021-12-17 18:54:50,802 INFO L226 Difference]: Without dead ends: 10872 [2021-12-17 18:54:50,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 18:54:50,814 INFO L933 BasicCegarLoop]: 5227 mSDtfsCounter, 5996 mSDsluCounter, 13233 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6042 SdHoareTripleChecker+Valid, 18460 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:50,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6042 Valid, 18460 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 18:54:50,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10872 states. [2021-12-17 18:54:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10872 to 8448. [2021-12-17 18:54:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8448 states, 7954 states have (on average 1.6147850138295197) internal successors, (12844), 8003 states have internal predecessors, (12844), 358 states have call successors, (358), 97 states have call predecessors, (358), 134 states have return successors, (475), 355 states have call predecessors, (475), 356 states have call successors, (475) [2021-12-17 18:54:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8448 states to 8448 states and 13677 transitions. [2021-12-17 18:54:51,402 INFO L78 Accepts]: Start accepts. Automaton has 8448 states and 13677 transitions. Word has length 190 [2021-12-17 18:54:51,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:51,402 INFO L470 AbstractCegarLoop]: Abstraction has 8448 states and 13677 transitions. [2021-12-17 18:54:51,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 18:54:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 8448 states and 13677 transitions. [2021-12-17 18:54:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:51,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:51,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:51,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 18:54:51,413 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1811090438, now seen corresponding path program 1 times [2021-12-17 18:54:51,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:51,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438217470] [2021-12-17 18:54:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:51,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:51,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438217470] [2021-12-17 18:54:51,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438217470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397788699] [2021-12-17 18:54:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:51,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:51,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:51,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:54:51,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 18:54:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:51,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:51,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:54:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 18:54:52,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:54:52,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397788699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:52,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:54:52,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:54:52,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012003805] [2021-12-17 18:54:52,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:52,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:54:52,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:54:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:52,179 INFO L87 Difference]: Start difference. First operand 8448 states and 13677 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:53,120 INFO L93 Difference]: Finished difference Result 20977 states and 33161 transitions. [2021-12-17 18:54:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:54:53,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:54:53,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:53,151 INFO L225 Difference]: With dead ends: 20977 [2021-12-17 18:54:53,151 INFO L226 Difference]: Without dead ends: 14672 [2021-12-17 18:54:53,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:53,167 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4469 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4469 SdHoareTripleChecker+Valid, 5168 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:53,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4469 Valid, 5168 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:54:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14672 states. [2021-12-17 18:54:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14672 to 14636. [2021-12-17 18:54:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14636 states, 13672 states have (on average 1.5765067290813342) internal successors, (21554), 13767 states have internal predecessors, (21554), 694 states have call successors, (694), 193 states have call predecessors, (694), 268 states have return successors, (923), 683 states have call predecessors, (923), 692 states have call successors, (923) [2021-12-17 18:54:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14636 states to 14636 states and 23171 transitions. [2021-12-17 18:54:54,189 INFO L78 Accepts]: Start accepts. Automaton has 14636 states and 23171 transitions. Word has length 309 [2021-12-17 18:54:54,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:54,189 INFO L470 AbstractCegarLoop]: Abstraction has 14636 states and 23171 transitions. [2021-12-17 18:54:54,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 14636 states and 23171 transitions. [2021-12-17 18:54:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:54,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:54,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:54,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 18:54:54,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-17 18:54:54,427 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1057058022, now seen corresponding path program 1 times [2021-12-17 18:54:54,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:54,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606929487] [2021-12-17 18:54:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:54,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:54,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:54,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:54,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606929487] [2021-12-17 18:54:54,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606929487] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:54,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542355296] [2021-12-17 18:54:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:54,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:54,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:54,573 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) [2021-12-17 18:54:54,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 18:54:54,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:54,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:54,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:54:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-17 18:54:55,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:54:55,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542355296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:54:55,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:54:55,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:54:55,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745526860] [2021-12-17 18:54:55,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:54:55,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:54:55,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:54:55,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:54:55,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:55,141 INFO L87 Difference]: Start difference. First operand 14636 states and 23171 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:56,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:54:56,956 INFO L93 Difference]: Finished difference Result 39461 states and 61755 transitions. [2021-12-17 18:54:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:54:56,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:54:56,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:54:57,020 INFO L225 Difference]: With dead ends: 39461 [2021-12-17 18:54:57,021 INFO L226 Difference]: Without dead ends: 26968 [2021-12-17 18:54:57,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:54:57,047 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4457 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4457 SdHoareTripleChecker+Valid, 5168 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:54:57,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4457 Valid, 5168 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:54:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26968 states. [2021-12-17 18:54:59,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26968 to 26900. [2021-12-17 18:54:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26900 states, 25012 states have (on average 1.552454821685591) internal successors, (38830), 25199 states have internal predecessors, (38830), 1350 states have call successors, (1350), 385 states have call predecessors, (1350), 536 states have return successors, (1803), 1323 states have call predecessors, (1803), 1348 states have call successors, (1803) [2021-12-17 18:54:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26900 states to 26900 states and 41983 transitions. [2021-12-17 18:54:59,154 INFO L78 Accepts]: Start accepts. Automaton has 26900 states and 41983 transitions. Word has length 309 [2021-12-17 18:54:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:54:59,154 INFO L470 AbstractCegarLoop]: Abstraction has 26900 states and 41983 transitions. [2021-12-17 18:54:59,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:54:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 26900 states and 41983 transitions. [2021-12-17 18:54:59,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:54:59,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:54:59,186 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:54:59,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 18:54:59,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-17 18:54:59,396 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:54:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:54:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1292755514, now seen corresponding path program 1 times [2021-12-17 18:54:59,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:54:59,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611514513] [2021-12-17 18:54:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:59,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:54:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:54:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:54:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:54:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:54:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:54:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:54:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:54:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:54:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:54:59,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:54:59,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611514513] [2021-12-17 18:54:59,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611514513] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:54:59,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518484257] [2021-12-17 18:54:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:54:59,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:54:59,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:54:59,546 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) [2021-12-17 18:54:59,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 18:54:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:54:59,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:54:59,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:55:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-17 18:55:00,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:55:00,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518484257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:00,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:55:00,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:55:00,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125926963] [2021-12-17 18:55:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:00,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:55:00,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:55:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:55:00,069 INFO L87 Difference]: Start difference. First operand 26900 states and 41983 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:55:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:03,906 INFO L93 Difference]: Finished difference Result 76093 states and 118399 transitions. [2021-12-17 18:55:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:55:03,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:55:03,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:04,038 INFO L225 Difference]: With dead ends: 76093 [2021-12-17 18:55:04,039 INFO L226 Difference]: Without dead ends: 51336 [2021-12-17 18:55:04,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:55:04,090 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4493 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 5168 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:04,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4493 Valid, 5168 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:55:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51336 states. [2021-12-17 18:55:08,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51336 to 51204. [2021-12-17 18:55:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51204 states, 47500 states have (on average 1.5388210526315789) internal successors, (73094), 47871 states have internal predecessors, (73094), 2630 states have call successors, (2630), 769 states have call predecessors, (2630), 1072 states have return successors, (3531), 2571 states have call predecessors, (3531), 2628 states have call successors, (3531) [2021-12-17 18:55:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51204 states to 51204 states and 79255 transitions. [2021-12-17 18:55:08,318 INFO L78 Accepts]: Start accepts. Automaton has 51204 states and 79255 transitions. Word has length 309 [2021-12-17 18:55:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:08,319 INFO L470 AbstractCegarLoop]: Abstraction has 51204 states and 79255 transitions. [2021-12-17 18:55:08,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:55:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 51204 states and 79255 transitions. [2021-12-17 18:55:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:55:08,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:08,378 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:55:08,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 18:55:08,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:55:08,578 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2094801242, now seen corresponding path program 1 times [2021-12-17 18:55:08,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:08,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232276911] [2021-12-17 18:55:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:08,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:55:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:55:08,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:55:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:55:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:55:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:55:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:55:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:55:08,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:08,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232276911] [2021-12-17 18:55:08,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232276911] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:55:08,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366840104] [2021-12-17 18:55:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:08,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:55:08,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:55:08,734 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) [2021-12-17 18:55:08,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 18:55:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:08,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:55:08,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:55:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-17 18:55:09,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:55:09,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366840104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:09,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:55:09,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:55:09,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128656816] [2021-12-17 18:55:09,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:09,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:55:09,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:55:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:55:09,334 INFO L87 Difference]: Start difference. First operand 51204 states and 79255 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:55:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:55:17,262 INFO L93 Difference]: Finished difference Result 148685 states and 230599 transitions. [2021-12-17 18:55:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 18:55:17,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 18:55:17,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:55:17,544 INFO L225 Difference]: With dead ends: 148685 [2021-12-17 18:55:17,544 INFO L226 Difference]: Without dead ends: 99624 [2021-12-17 18:55:17,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:55:17,797 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4481 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4481 SdHoareTripleChecker+Valid, 5168 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 18:55:17,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4481 Valid, 5168 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 18:55:17,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99624 states. [2021-12-17 18:55:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99624 to 99364. [2021-12-17 18:55:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99364 states, 92092 states have (on average 1.5315771185336402) internal successors, (141046), 92831 states have internal predecessors, (141046), 5126 states have call successors, (5126), 1537 states have call predecessors, (5126), 2144 states have return successors, (6923), 5003 states have call predecessors, (6923), 5124 states have call successors, (6923) [2021-12-17 18:55:26,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99364 states to 99364 states and 153095 transitions. [2021-12-17 18:55:26,274 INFO L78 Accepts]: Start accepts. Automaton has 99364 states and 153095 transitions. Word has length 309 [2021-12-17 18:55:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:55:26,274 INFO L470 AbstractCegarLoop]: Abstraction has 99364 states and 153095 transitions. [2021-12-17 18:55:26,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 18:55:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 99364 states and 153095 transitions. [2021-12-17 18:55:26,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 18:55:26,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:55:26,357 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:55:26,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-17 18:55:26,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:55:26,571 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:55:26,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:55:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash -105377670, now seen corresponding path program 1 times [2021-12-17 18:55:26,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:55:26,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556029093] [2021-12-17 18:55:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:26,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:55:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:55:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 18:55:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 18:55:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 18:55:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 18:55:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 18:55:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 18:55:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 18:55:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 18:55:26,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:55:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556029093] [2021-12-17 18:55:26,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556029093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 18:55:26,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048853798] [2021-12-17 18:55:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:55:26,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 18:55:26,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:55:26,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 18:55:26,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 18:55:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:55:26,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 18:55:26,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 18:55:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-17 18:55:27,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 18:55:27,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048853798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:55:27,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 18:55:27,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 18:55:27,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546578960] [2021-12-17 18:55:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:55:27,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 18:55:27,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:55:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 18:55:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:55:27,250 INFO L87 Difference]: Start difference. First operand 99364 states and 153095 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)