./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.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 2aece9bc24459d3bfdb5e96b44f652012670bcbf1cd47e085c4f986f518e00f1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:45:52,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:45:52,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:45:52,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:45:52,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:45:52,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:45:52,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:45:52,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:45:52,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:45:52,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:45:52,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:45:52,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:45:52,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:45:52,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:45:52,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:45:52,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:45:52,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:45:52,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:45:52,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:45:52,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:45:52,875 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:45:52,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:45:52,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:45:52,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:45:52,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:45:52,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:45:52,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:45:52,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:45:52,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:45:52,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:45:52,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:45:52,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:45:52,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:45:52,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:45:52,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:45:52,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:45:52,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:45:52,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:45:52,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:45:52,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:45:52,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:45:52,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:45:52,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:45:52,937 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:45:52,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:45:52,938 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:45:52,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:45:52,939 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:45:52,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:45:52,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:45:52,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:45:52,941 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:45:52,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:45:52,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:45:52,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:45:52,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:45:52,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:45:52,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:45:52,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:45:52,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:45:52,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:45:52,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:45:52,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:45:52,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:45:52,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:45:52,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:45:52,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:45:52,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:45:52,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:45:52,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:45:52,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:45:52,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:45:52,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:45:52,946 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:45:52,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:45:52,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:45:52,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aece9bc24459d3bfdb5e96b44f652012670bcbf1cd47e085c4f986f518e00f1 [2022-07-21 07:45:53,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:45:53,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:45:53,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:45:53,305 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:45:53,307 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:45:53,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c [2022-07-21 07:45:53,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d811c93/e14b9309c499457e836ac0a59a0b6dbc/FLAGb146b0468 [2022-07-21 07:45:54,051 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:45:54,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c [2022-07-21 07:45:54,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d811c93/e14b9309c499457e836ac0a59a0b6dbc/FLAGb146b0468 [2022-07-21 07:45:54,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5d811c93/e14b9309c499457e836ac0a59a0b6dbc [2022-07-21 07:45:54,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:45:54,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:45:54,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:45:54,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:45:54,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:45:54,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:45:54" (1/1) ... [2022-07-21 07:45:54,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e567a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:54, skipping insertion in model container [2022-07-21 07:45:54,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:45:54" (1/1) ... [2022-07-21 07:45:54,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:45:54,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:45:54,618 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/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c[8712,8725] [2022-07-21 07:45:54,641 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/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c[11049,11062] [2022-07-21 07:45:55,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:45:55,273 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:45:55,309 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/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c[8712,8725] [2022-07-21 07:45:55,314 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/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c[11049,11062] [2022-07-21 07:45:55,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:45:55,764 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:45:55,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55 WrapperNode [2022-07-21 07:45:55,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:45:55,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:45:55,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:45:55,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:45:55,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:55,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,187 INFO L137 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5031 [2022-07-21 07:45:56,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:45:56,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:45:56,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:45:56,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:45:56,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:45:56,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:45:56,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:45:56,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:45:56,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (1/1) ... [2022-07-21 07:45:56,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:45:56,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:45:56,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 07:45:56,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 07:45:56,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:45:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:45:56,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:45:56,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:45:56,818 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:45:56,824 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:46:00,563 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:46:00,585 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:46:00,586 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 07:46:00,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:46:00 BoogieIcfgContainer [2022-07-21 07:46:00,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:46:00,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:46:00,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:46:00,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:46:00,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:45:54" (1/3) ... [2022-07-21 07:46:00,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebc59f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:46:00, skipping insertion in model container [2022-07-21 07:46:00,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:45:55" (2/3) ... [2022-07-21 07:46:00,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebc59f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:46:00, skipping insertion in model container [2022-07-21 07:46:00,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:46:00" (3/3) ... [2022-07-21 07:46:00,597 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label03.c [2022-07-21 07:46:00,611 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:46:00,611 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:46:00,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:46:00,704 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2a77d854, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47bb1696 [2022-07-21 07:46:00,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:46:00,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 07:46:00,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:00,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:00,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:00,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:00,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1466745723, now seen corresponding path program 1 times [2022-07-21 07:46:00,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:00,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076526352] [2022-07-21 07:46:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:00,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:01,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:01,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076526352] [2022-07-21 07:46:01,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076526352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:01,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:01,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 07:46:01,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214794660] [2022-07-21 07:46:01,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:01,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:01,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:01,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:01,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:01,064 INFO L87 Difference]: Start difference. First operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:04,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:04,667 INFO L93 Difference]: Finished difference Result 2530 states and 4854 transitions. [2022-07-21 07:46:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-21 07:46:04,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:04,689 INFO L225 Difference]: With dead ends: 2530 [2022-07-21 07:46:04,689 INFO L226 Difference]: Without dead ends: 1580 [2022-07-21 07:46:04,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:04,699 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 925 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:04,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 651 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 07:46:04,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-07-21 07:46:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2022-07-21 07:46:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1578 states have (on average 1.6108998732572877) internal successors, (2542), 1579 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2542 transitions. [2022-07-21 07:46:04,815 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2542 transitions. Word has length 20 [2022-07-21 07:46:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:04,816 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2542 transitions. [2022-07-21 07:46:04,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2542 transitions. [2022-07-21 07:46:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 07:46:04,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:04,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:04,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:46:04,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1951091139, now seen corresponding path program 1 times [2022-07-21 07:46:04,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:04,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764754] [2022-07-21 07:46:04,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:04,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:04,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:04,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764754] [2022-07-21 07:46:04,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:04,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:04,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:46:04,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128548227] [2022-07-21 07:46:04,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:04,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 07:46:04,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 07:46:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 07:46:04,887 INFO L87 Difference]: Start difference. First operand 1580 states and 2542 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:04,956 INFO L93 Difference]: Finished difference Result 1630 states and 2618 transitions. [2022-07-21 07:46:04,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:46:04,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-21 07:46:04,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:04,966 INFO L225 Difference]: With dead ends: 1630 [2022-07-21 07:46:04,967 INFO L226 Difference]: Without dead ends: 1580 [2022-07-21 07:46:04,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:46:04,969 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 3 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:04,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6218 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:04,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-07-21 07:46:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2022-07-21 07:46:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1578 states have (on average 1.5963244613434728) internal successors, (2519), 1579 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2519 transitions. [2022-07-21 07:46:05,005 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2519 transitions. Word has length 30 [2022-07-21 07:46:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:05,006 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2519 transitions. [2022-07-21 07:46:05,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2519 transitions. [2022-07-21 07:46:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 07:46:05,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:05,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:05,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:46:05,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:05,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash 568524862, now seen corresponding path program 1 times [2022-07-21 07:46:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:05,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90181717] [2022-07-21 07:46:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:05,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:05,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90181717] [2022-07-21 07:46:05,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90181717] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:05,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:05,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:46:05,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144993440] [2022-07-21 07:46:05,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:05,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:46:05,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:46:05,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:46:05,100 INFO L87 Difference]: Start difference. First operand 1580 states and 2519 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:05,236 INFO L93 Difference]: Finished difference Result 1948 states and 3095 transitions. [2022-07-21 07:46:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 07:46:05,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-21 07:46:05,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:05,245 INFO L225 Difference]: With dead ends: 1948 [2022-07-21 07:46:05,245 INFO L226 Difference]: Without dead ends: 1902 [2022-07-21 07:46:05,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 07:46:05,251 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 6574 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6574 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:05,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6574 Valid, 2078 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:05,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-07-21 07:46:05,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1624. [2022-07-21 07:46:05,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.595561035758323) internal successors, (2588), 1623 states have internal predecessors, (2588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2588 transitions. [2022-07-21 07:46:05,302 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2588 transitions. Word has length 52 [2022-07-21 07:46:05,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:05,303 INFO L495 AbstractCegarLoop]: Abstraction has 1624 states and 2588 transitions. [2022-07-21 07:46:05,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2588 transitions. [2022-07-21 07:46:05,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 07:46:05,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:05,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:05,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 07:46:05,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash -524152242, now seen corresponding path program 1 times [2022-07-21 07:46:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:05,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367384305] [2022-07-21 07:46:05,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:05,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:05,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:05,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367384305] [2022-07-21 07:46:05,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367384305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:05,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:05,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:05,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683605654] [2022-07-21 07:46:05,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:05,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:05,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:05,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:05,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:05,429 INFO L87 Difference]: Start difference. First operand 1624 states and 2588 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:05,474 INFO L93 Difference]: Finished difference Result 1793 states and 2851 transitions. [2022-07-21 07:46:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:05,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-21 07:46:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:05,482 INFO L225 Difference]: With dead ends: 1793 [2022-07-21 07:46:05,483 INFO L226 Difference]: Without dead ends: 1703 [2022-07-21 07:46:05,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:05,491 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:05,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1601 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-07-21 07:46:05,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2022-07-21 07:46:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.5922215674720095) internal successors, (2702), 1698 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2702 transitions. [2022-07-21 07:46:05,579 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2702 transitions. Word has length 54 [2022-07-21 07:46:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:05,580 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2702 transitions. [2022-07-21 07:46:05,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2702 transitions. [2022-07-21 07:46:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 07:46:05,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:05,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:05,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 07:46:05,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:05,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:05,584 INFO L85 PathProgramCache]: Analyzing trace with hash -457658730, now seen corresponding path program 1 times [2022-07-21 07:46:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:05,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40233672] [2022-07-21 07:46:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:05,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40233672] [2022-07-21 07:46:05,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40233672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:05,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:05,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:46:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140950533] [2022-07-21 07:46:05,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:46:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:46:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:46:05,735 INFO L87 Difference]: Start difference. First operand 1699 states and 2702 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:05,867 INFO L93 Difference]: Finished difference Result 1866 states and 2958 transitions. [2022-07-21 07:46:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:46:05,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-21 07:46:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:05,875 INFO L225 Difference]: With dead ends: 1866 [2022-07-21 07:46:05,876 INFO L226 Difference]: Without dead ends: 1701 [2022-07-21 07:46:05,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:46:05,878 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3078 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:05,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3078 Valid, 1750 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-07-21 07:46:05,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2022-07-21 07:46:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.5910430170889807) internal successors, (2700), 1698 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2700 transitions. [2022-07-21 07:46:05,925 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2700 transitions. Word has length 54 [2022-07-21 07:46:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:05,927 INFO L495 AbstractCegarLoop]: Abstraction has 1699 states and 2700 transitions. [2022-07-21 07:46:05,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:05,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2700 transitions. [2022-07-21 07:46:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 07:46:05,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:05,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 07:46:05,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:05,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1331255346, now seen corresponding path program 1 times [2022-07-21 07:46:05,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:05,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580520165] [2022-07-21 07:46:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:05,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:05,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:05,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580520165] [2022-07-21 07:46:05,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580520165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:05,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:05,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:05,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480236595] [2022-07-21 07:46:05,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:05,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:05,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:05,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:05,974 INFO L87 Difference]: Start difference. First operand 1699 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:06,021 INFO L93 Difference]: Finished difference Result 2005 states and 3166 transitions. [2022-07-21 07:46:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:06,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-21 07:46:06,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:06,031 INFO L225 Difference]: With dead ends: 2005 [2022-07-21 07:46:06,032 INFO L226 Difference]: Without dead ends: 1840 [2022-07-21 07:46:06,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:06,035 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:06,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1639 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:06,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-07-21 07:46:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1838. [2022-07-21 07:46:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1836 states have (on average 1.5838779956427016) internal successors, (2908), 1837 states have internal predecessors, (2908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2908 transitions. [2022-07-21 07:46:06,086 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2908 transitions. Word has length 54 [2022-07-21 07:46:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:06,086 INFO L495 AbstractCegarLoop]: Abstraction has 1838 states and 2908 transitions. [2022-07-21 07:46:06,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2908 transitions. [2022-07-21 07:46:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 07:46:06,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:06,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:06,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 07:46:06,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1716204334, now seen corresponding path program 1 times [2022-07-21 07:46:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:06,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680851561] [2022-07-21 07:46:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:06,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:06,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680851561] [2022-07-21 07:46:06,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680851561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:06,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:06,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844177709] [2022-07-21 07:46:06,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:06,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:06,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:06,129 INFO L87 Difference]: Start difference. First operand 1838 states and 2908 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:06,185 INFO L93 Difference]: Finished difference Result 2398 states and 3750 transitions. [2022-07-21 07:46:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-21 07:46:06,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:06,195 INFO L225 Difference]: With dead ends: 2398 [2022-07-21 07:46:06,196 INFO L226 Difference]: Without dead ends: 2094 [2022-07-21 07:46:06,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:06,198 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 1493 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:06,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1648 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:06,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2022-07-21 07:46:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2092. [2022-07-21 07:46:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2090 states have (on average 1.569377990430622) internal successors, (3280), 2091 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3280 transitions. [2022-07-21 07:46:06,268 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3280 transitions. Word has length 54 [2022-07-21 07:46:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:06,269 INFO L495 AbstractCegarLoop]: Abstraction has 2092 states and 3280 transitions. [2022-07-21 07:46:06,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3280 transitions. [2022-07-21 07:46:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 07:46:06,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:06,270 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:06,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 07:46:06,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:06,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1442516622, now seen corresponding path program 1 times [2022-07-21 07:46:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:06,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359081361] [2022-07-21 07:46:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:06,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359081361] [2022-07-21 07:46:06,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359081361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:06,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:06,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978782007] [2022-07-21 07:46:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:06,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:06,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:06,318 INFO L87 Difference]: Start difference. First operand 2092 states and 3280 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:06,401 INFO L93 Difference]: Finished difference Result 3112 states and 4786 transitions. [2022-07-21 07:46:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:06,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-21 07:46:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:06,411 INFO L225 Difference]: With dead ends: 3112 [2022-07-21 07:46:06,412 INFO L226 Difference]: Without dead ends: 2554 [2022-07-21 07:46:06,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:06,414 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1497 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:06,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:06,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-07-21 07:46:06,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2552. [2022-07-21 07:46:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5435294117647058) internal successors, (3936), 2551 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3936 transitions. [2022-07-21 07:46:06,513 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3936 transitions. Word has length 54 [2022-07-21 07:46:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:06,514 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 3936 transitions. [2022-07-21 07:46:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3936 transitions. [2022-07-21 07:46:06,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 07:46:06,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:06,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:06,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 07:46:06,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1717241860, now seen corresponding path program 1 times [2022-07-21 07:46:06,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:06,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161308893] [2022-07-21 07:46:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:06,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:06,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161308893] [2022-07-21 07:46:06,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161308893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:06,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:06,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 07:46:06,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006735209] [2022-07-21 07:46:06,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:06,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 07:46:06,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:06,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 07:46:06,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 07:46:06,626 INFO L87 Difference]: Start difference. First operand 2552 states and 3936 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:06,887 INFO L93 Difference]: Finished difference Result 3322 states and 5037 transitions. [2022-07-21 07:46:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 07:46:06,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-21 07:46:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:06,901 INFO L225 Difference]: With dead ends: 3322 [2022-07-21 07:46:06,901 INFO L226 Difference]: Without dead ends: 3320 [2022-07-21 07:46:06,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-07-21 07:46:06,903 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 498 mSDsluCounter, 9002 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 10579 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:06,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 10579 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2022-07-21 07:46:07,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 2600. [2022-07-21 07:46:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2598 states have (on average 1.5304080061585836) internal successors, (3976), 2599 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3976 transitions. [2022-07-21 07:46:07,045 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3976 transitions. Word has length 55 [2022-07-21 07:46:07,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:07,045 INFO L495 AbstractCegarLoop]: Abstraction has 2600 states and 3976 transitions. [2022-07-21 07:46:07,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:07,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3976 transitions. [2022-07-21 07:46:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 07:46:07,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:07,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:07,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 07:46:07,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash -754642547, now seen corresponding path program 1 times [2022-07-21 07:46:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:07,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872671711] [2022-07-21 07:46:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:07,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:07,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872671711] [2022-07-21 07:46:07,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872671711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:07,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:07,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882198250] [2022-07-21 07:46:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:07,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:07,080 INFO L87 Difference]: Start difference. First operand 2600 states and 3976 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:07,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:07,236 INFO L93 Difference]: Finished difference Result 3695 states and 5566 transitions. [2022-07-21 07:46:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:07,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-07-21 07:46:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:07,248 INFO L225 Difference]: With dead ends: 3695 [2022-07-21 07:46:07,249 INFO L226 Difference]: Without dead ends: 3084 [2022-07-21 07:46:07,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:07,252 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1498 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:07,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1661 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-07-21 07:46:07,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 3082. [2022-07-21 07:46:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3080 states have (on average 1.5097402597402598) internal successors, (4650), 3081 states have internal predecessors, (4650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:07,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4650 transitions. [2022-07-21 07:46:07,443 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 4650 transitions. Word has length 56 [2022-07-21 07:46:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:07,443 INFO L495 AbstractCegarLoop]: Abstraction has 3082 states and 4650 transitions. [2022-07-21 07:46:07,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 4650 transitions. [2022-07-21 07:46:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:46:07,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:07,446 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:07,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 07:46:07,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:07,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:07,447 INFO L85 PathProgramCache]: Analyzing trace with hash 457839235, now seen corresponding path program 1 times [2022-07-21 07:46:07,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683654865] [2022-07-21 07:46:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:07,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 07:46:07,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:07,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683654865] [2022-07-21 07:46:07,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683654865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:07,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:07,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:46:07,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722140602] [2022-07-21 07:46:07,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:07,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:46:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:46:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:46:07,546 INFO L87 Difference]: Start difference. First operand 3082 states and 4650 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:08,152 INFO L93 Difference]: Finished difference Result 9588 states and 13891 transitions. [2022-07-21 07:46:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:46:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-21 07:46:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:08,189 INFO L225 Difference]: With dead ends: 9588 [2022-07-21 07:46:08,189 INFO L226 Difference]: Without dead ends: 8042 [2022-07-21 07:46:08,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:46:08,194 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 4790 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:08,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4790 Valid, 3371 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:08,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2022-07-21 07:46:08,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 4626. [2022-07-21 07:46:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4624 states have (on average 1.4762110726643598) internal successors, (6826), 4625 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6826 transitions. [2022-07-21 07:46:08,511 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6826 transitions. Word has length 79 [2022-07-21 07:46:08,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:08,512 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 6826 transitions. [2022-07-21 07:46:08,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:08,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6826 transitions. [2022-07-21 07:46:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:46:08,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:08,519 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 07:46:08,520 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1705346851, now seen corresponding path program 1 times [2022-07-21 07:46:08,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:08,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166793263] [2022-07-21 07:46:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 07:46:08,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:08,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166793263] [2022-07-21 07:46:08,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166793263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:08,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:08,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:46:08,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83055461] [2022-07-21 07:46:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:08,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:46:08,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:46:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:46:08,588 INFO L87 Difference]: Start difference. First operand 4626 states and 6826 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:09,302 INFO L93 Difference]: Finished difference Result 11132 states and 16067 transitions. [2022-07-21 07:46:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:46:09,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-21 07:46:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:09,324 INFO L225 Difference]: With dead ends: 11132 [2022-07-21 07:46:09,324 INFO L226 Difference]: Without dead ends: 9586 [2022-07-21 07:46:09,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:46:09,331 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 4739 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:09,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4739 Valid, 3418 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9586 states. [2022-07-21 07:46:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9586 to 6946. [2022-07-21 07:46:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6944 states have (on average 1.450172811059908) internal successors, (10070), 6945 states have internal predecessors, (10070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10070 transitions. [2022-07-21 07:46:09,821 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10070 transitions. Word has length 79 [2022-07-21 07:46:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:09,822 INFO L495 AbstractCegarLoop]: Abstraction has 6946 states and 10070 transitions. [2022-07-21 07:46:09,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10070 transitions. [2022-07-21 07:46:09,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-21 07:46:09,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:09,824 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:09,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 07:46:09,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:09,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1979034563, now seen corresponding path program 1 times [2022-07-21 07:46:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:09,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3395836] [2022-07-21 07:46:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 07:46:09,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:09,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3395836] [2022-07-21 07:46:09,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3395836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:09,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:09,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:46:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988676195] [2022-07-21 07:46:09,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:09,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:46:09,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:09,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:46:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:46:09,890 INFO L87 Difference]: Start difference. First operand 6946 states and 10070 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:10,711 INFO L93 Difference]: Finished difference Result 12676 states and 18243 transitions. [2022-07-21 07:46:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:46:10,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-21 07:46:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:10,734 INFO L225 Difference]: With dead ends: 12676 [2022-07-21 07:46:10,735 INFO L226 Difference]: Without dead ends: 11130 [2022-07-21 07:46:10,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:46:10,743 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 4770 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4770 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:10,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4770 Valid, 3408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:10,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2022-07-21 07:46:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 8490. [2022-07-21 07:46:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 8488 states have (on average 1.4427426955702167) internal successors, (12246), 8489 states have internal predecessors, (12246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 12246 transitions. [2022-07-21 07:46:11,474 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 12246 transitions. Word has length 79 [2022-07-21 07:46:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:11,474 INFO L495 AbstractCegarLoop]: Abstraction has 8490 states and 12246 transitions. [2022-07-21 07:46:11,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:11,475 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 12246 transitions. [2022-07-21 07:46:11,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 07:46:11,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:11,478 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:11,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 07:46:11,479 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash 547636123, now seen corresponding path program 1 times [2022-07-21 07:46:11,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:11,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052619362] [2022-07-21 07:46:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:11,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:11,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052619362] [2022-07-21 07:46:11,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052619362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:11,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:11,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:11,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675545827] [2022-07-21 07:46:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:11,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:11,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:11,532 INFO L87 Difference]: Start difference. First operand 8490 states and 12246 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:11,931 INFO L93 Difference]: Finished difference Result 13416 states and 19263 transitions. [2022-07-21 07:46:11,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:11,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-21 07:46:11,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:11,945 INFO L225 Difference]: With dead ends: 13416 [2022-07-21 07:46:11,945 INFO L226 Difference]: Without dead ends: 6462 [2022-07-21 07:46:11,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:11,957 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 45 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:11,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3096 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:11,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2022-07-21 07:46:12,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 6460. [2022-07-21 07:46:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6460 states, 6458 states have (on average 1.4543202229792505) internal successors, (9392), 6459 states have internal predecessors, (9392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6460 states to 6460 states and 9392 transitions. [2022-07-21 07:46:12,344 INFO L78 Accepts]: Start accepts. Automaton has 6460 states and 9392 transitions. Word has length 81 [2022-07-21 07:46:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:12,344 INFO L495 AbstractCegarLoop]: Abstraction has 6460 states and 9392 transitions. [2022-07-21 07:46:12,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6460 states and 9392 transitions. [2022-07-21 07:46:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-21 07:46:12,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:12,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:12,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 07:46:12,348 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:12,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:12,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1706064798, now seen corresponding path program 1 times [2022-07-21 07:46:12,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:12,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707873394] [2022-07-21 07:46:12,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:12,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 07:46:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:12,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707873394] [2022-07-21 07:46:12,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707873394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:12,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:12,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 07:46:12,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512829941] [2022-07-21 07:46:12,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:12,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:46:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:46:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:46:12,406 INFO L87 Difference]: Start difference. First operand 6460 states and 9392 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:13,068 INFO L93 Difference]: Finished difference Result 10822 states and 15605 transitions. [2022-07-21 07:46:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:46:13,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-21 07:46:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:13,087 INFO L225 Difference]: With dead ends: 10822 [2022-07-21 07:46:13,088 INFO L226 Difference]: Without dead ends: 9732 [2022-07-21 07:46:13,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:46:13,094 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 4760 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4760 SdHoareTripleChecker+Valid, 3379 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:13,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4760 Valid, 3379 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 07:46:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2022-07-21 07:46:13,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 7548. [2022-07-21 07:46:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7548 states, 7546 states have (on average 1.448184468592632) internal successors, (10928), 7547 states have internal predecessors, (10928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 10928 transitions. [2022-07-21 07:46:13,552 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 10928 transitions. Word has length 81 [2022-07-21 07:46:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:13,553 INFO L495 AbstractCegarLoop]: Abstraction has 7548 states and 10928 transitions. [2022-07-21 07:46:13,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 10928 transitions. [2022-07-21 07:46:13,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 07:46:13,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:13,555 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:13,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 07:46:13,556 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:13,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1625443301, now seen corresponding path program 1 times [2022-07-21 07:46:13,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:13,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279933461] [2022-07-21 07:46:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:13,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:13,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:13,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279933461] [2022-07-21 07:46:13,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279933461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:13,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:13,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:13,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209026792] [2022-07-21 07:46:13,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:13,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:13,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:13,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:13,604 INFO L87 Difference]: Start difference. First operand 7548 states and 10928 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:13,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:13,825 INFO L93 Difference]: Finished difference Result 10544 states and 15154 transitions. [2022-07-21 07:46:13,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:13,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-21 07:46:13,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:13,834 INFO L225 Difference]: With dead ends: 10544 [2022-07-21 07:46:13,834 INFO L226 Difference]: Without dead ends: 4558 [2022-07-21 07:46:13,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:13,842 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 39 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:13,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3081 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2022-07-21 07:46:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4556. [2022-07-21 07:46:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4554 states have (on average 1.4624505928853755) internal successors, (6660), 4555 states have internal predecessors, (6660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 6660 transitions. [2022-07-21 07:46:14,094 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 6660 transitions. Word has length 82 [2022-07-21 07:46:14,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:14,095 INFO L495 AbstractCegarLoop]: Abstraction has 4556 states and 6660 transitions. [2022-07-21 07:46:14,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 6660 transitions. [2022-07-21 07:46:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 07:46:14,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:14,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:46:14,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 07:46:14,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1082921701, now seen corresponding path program 1 times [2022-07-21 07:46:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:14,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307574986] [2022-07-21 07:46:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:14,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:14,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307574986] [2022-07-21 07:46:14,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307574986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:14,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:14,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:14,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309346789] [2022-07-21 07:46:14,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:14,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:14,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:14,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:14,136 INFO L87 Difference]: Start difference. First operand 4556 states and 6660 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:14,279 INFO L93 Difference]: Finished difference Result 6056 states and 8752 transitions. [2022-07-21 07:46:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:14,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-21 07:46:14,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:14,290 INFO L225 Difference]: With dead ends: 6056 [2022-07-21 07:46:14,290 INFO L226 Difference]: Without dead ends: 3062 [2022-07-21 07:46:14,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:14,295 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 35 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:14,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3066 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2022-07-21 07:46:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3060. [2022-07-21 07:46:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3058 states have (on average 1.487246566383257) internal successors, (4548), 3059 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4548 transitions. [2022-07-21 07:46:14,466 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4548 transitions. Word has length 82 [2022-07-21 07:46:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:14,467 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4548 transitions. [2022-07-21 07:46:14,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4548 transitions. [2022-07-21 07:46:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 07:46:14,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:14,469 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:14,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 07:46:14,469 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1170040495, now seen corresponding path program 1 times [2022-07-21 07:46:14,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:14,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000771817] [2022-07-21 07:46:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:14,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:14,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:14,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000771817] [2022-07-21 07:46:14,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000771817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:14,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:14,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 07:46:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680999588] [2022-07-21 07:46:14,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:14,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 07:46:14,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:14,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 07:46:14,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:14,517 INFO L87 Difference]: Start difference. First operand 3060 states and 4548 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:14,601 INFO L93 Difference]: Finished difference Result 3812 states and 5584 transitions. [2022-07-21 07:46:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 07:46:14,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-21 07:46:14,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:14,606 INFO L225 Difference]: With dead ends: 3812 [2022-07-21 07:46:14,607 INFO L226 Difference]: Without dead ends: 2314 [2022-07-21 07:46:14,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 07:46:14,610 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:14,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3051 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:14,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-07-21 07:46:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2312. [2022-07-21 07:46:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2310 states have (on average 1.5164502164502165) internal successors, (3503), 2311 states have internal predecessors, (3503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3503 transitions. [2022-07-21 07:46:14,694 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3503 transitions. Word has length 82 [2022-07-21 07:46:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:14,694 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 3503 transitions. [2022-07-21 07:46:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3503 transitions. [2022-07-21 07:46:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 07:46:14,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:14,696 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 07:46:14,696 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:14,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash 2005651591, now seen corresponding path program 1 times [2022-07-21 07:46:14,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:14,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363247865] [2022-07-21 07:46:14,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:14,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:14,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:14,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363247865] [2022-07-21 07:46:14,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363247865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 07:46:14,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145860369] [2022-07-21 07:46:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:14,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:46:14,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:46:14,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 07:46:14,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 07:46:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:15,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 07:46:15,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:46:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 07:46:15,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:46:15,537 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 07:46:15,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145860369] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:46:15,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 07:46:15,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-21 07:46:15,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111402327] [2022-07-21 07:46:15,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 07:46:15,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 07:46:15,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:15,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 07:46:15,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-21 07:46:15,539 INFO L87 Difference]: Start difference. First operand 2312 states and 3503 transitions. Second operand has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:18,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:18,968 INFO L93 Difference]: Finished difference Result 11471 states and 15714 transitions. [2022-07-21 07:46:18,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-21 07:46:18,968 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-21 07:46:18,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:18,989 INFO L225 Difference]: With dead ends: 11471 [2022-07-21 07:46:18,989 INFO L226 Difference]: Without dead ends: 10721 [2022-07-21 07:46:18,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-07-21 07:46:18,996 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 17849 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17849 SdHoareTripleChecker+Valid, 6681 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:18,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17849 Valid, 6681 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 07:46:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2022-07-21 07:46:19,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 7981. [2022-07-21 07:46:19,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7981 states, 7979 states have (on average 1.3486652462714626) internal successors, (10761), 7980 states have internal predecessors, (10761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7981 states to 7981 states and 10761 transitions. [2022-07-21 07:46:19,581 INFO L78 Accepts]: Start accepts. Automaton has 7981 states and 10761 transitions. Word has length 82 [2022-07-21 07:46:19,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:19,581 INFO L495 AbstractCegarLoop]: Abstraction has 7981 states and 10761 transitions. [2022-07-21 07:46:19,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 7981 states and 10761 transitions. [2022-07-21 07:46:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 07:46:19,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:19,583 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:19,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 07:46:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:46:19,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -10585946, now seen corresponding path program 1 times [2022-07-21 07:46:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:19,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256022795] [2022-07-21 07:46:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:20,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:20,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256022795] [2022-07-21 07:46:20,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256022795] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 07:46:20,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758310336] [2022-07-21 07:46:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:20,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:46:20,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:46:20,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 07:46:20,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 07:46:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:20,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 07:46:20,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:46:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:20,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:46:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:21,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758310336] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:46:21,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 07:46:21,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-07-21 07:46:21,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245936497] [2022-07-21 07:46:21,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 07:46:21,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 07:46:21,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:21,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 07:46:21,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-07-21 07:46:21,193 INFO L87 Difference]: Start difference. First operand 7981 states and 10761 transitions. Second operand has 21 states, 21 states have (on average 8.857142857142858) internal successors, (186), 20 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:23,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:23,885 INFO L93 Difference]: Finished difference Result 30839 states and 40307 transitions. [2022-07-21 07:46:23,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 07:46:23,885 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.857142857142858) internal successors, (186), 20 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 07:46:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:23,918 INFO L225 Difference]: With dead ends: 30839 [2022-07-21 07:46:23,918 INFO L226 Difference]: Without dead ends: 24712 [2022-07-21 07:46:23,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2022-07-21 07:46:23,933 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 13854 mSDsluCounter, 5047 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13854 SdHoareTripleChecker+Valid, 6581 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:23,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13854 Valid, 6581 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 07:46:23,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24712 states. [2022-07-21 07:46:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24712 to 15888. [2022-07-21 07:46:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15888 states, 15886 states have (on average 1.298250031474254) internal successors, (20624), 15887 states have internal predecessors, (20624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15888 states to 15888 states and 20624 transitions. [2022-07-21 07:46:25,494 INFO L78 Accepts]: Start accepts. Automaton has 15888 states and 20624 transitions. Word has length 83 [2022-07-21 07:46:25,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:25,494 INFO L495 AbstractCegarLoop]: Abstraction has 15888 states and 20624 transitions. [2022-07-21 07:46:25,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.857142857142858) internal successors, (186), 20 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:25,495 INFO L276 IsEmpty]: Start isEmpty. Operand 15888 states and 20624 transitions. [2022-07-21 07:46:25,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 07:46:25,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:25,496 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:25,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 07:46:25,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-07-21 07:46:25,712 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1875749690, now seen corresponding path program 1 times [2022-07-21 07:46:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:25,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047171197] [2022-07-21 07:46:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:25,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:25,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047171197] [2022-07-21 07:46:25,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047171197] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 07:46:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416485141] [2022-07-21 07:46:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:25,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:46:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:46:25,855 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 07:46:25,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 07:46:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:25,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 07:46:25,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:46:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:27,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:46:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:27,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416485141] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:46:27,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 07:46:27,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2022-07-21 07:46:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507639080] [2022-07-21 07:46:27,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 07:46:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-21 07:46:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-21 07:46:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-07-21 07:46:27,846 INFO L87 Difference]: Start difference. First operand 15888 states and 20624 transitions. Second operand has 28 states, 28 states have (on average 7.464285714285714) internal successors, (209), 28 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:42,761 INFO L93 Difference]: Finished difference Result 100044 states and 128482 transitions. [2022-07-21 07:46:42,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-07-21 07:46:42,762 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.464285714285714) internal successors, (209), 28 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 07:46:42,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:42,905 INFO L225 Difference]: With dead ends: 100044 [2022-07-21 07:46:42,906 INFO L226 Difference]: Without dead ends: 86902 [2022-07-21 07:46:42,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3841 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2150, Invalid=9622, Unknown=0, NotChecked=0, Total=11772 [2022-07-21 07:46:42,940 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 14005 mSDsluCounter, 16683 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14005 SdHoareTripleChecker+Valid, 18291 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:42,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14005 Valid, 18291 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 07:46:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86902 states. [2022-07-21 07:46:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86902 to 40496. [2022-07-21 07:46:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40496 states, 40494 states have (on average 1.2637180816911147) internal successors, (51173), 40495 states have internal predecessors, (51173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:48,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40496 states to 40496 states and 51173 transitions. [2022-07-21 07:46:48,744 INFO L78 Accepts]: Start accepts. Automaton has 40496 states and 51173 transitions. Word has length 83 [2022-07-21 07:46:48,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:48,744 INFO L495 AbstractCegarLoop]: Abstraction has 40496 states and 51173 transitions. [2022-07-21 07:46:48,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.464285714285714) internal successors, (209), 28 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40496 states and 51173 transitions. [2022-07-21 07:46:48,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-21 07:46:48,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:48,746 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:48,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 07:46:48,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:46:48,960 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1855953112, now seen corresponding path program 1 times [2022-07-21 07:46:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:48,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303042504] [2022-07-21 07:46:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 07:46:49,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:49,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303042504] [2022-07-21 07:46:49,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303042504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:46:49,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:46:49,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 07:46:49,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895347326] [2022-07-21 07:46:49,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:46:49,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 07:46:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 07:46:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 07:46:49,102 INFO L87 Difference]: Start difference. First operand 40496 states and 51173 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:46:52,020 INFO L93 Difference]: Finished difference Result 63030 states and 79433 transitions. [2022-07-21 07:46:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 07:46:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-07-21 07:46:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:46:52,051 INFO L225 Difference]: With dead ends: 63030 [2022-07-21 07:46:52,052 INFO L226 Difference]: Without dead ends: 24179 [2022-07-21 07:46:52,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-21 07:46:52,074 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 4607 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 07:46:52,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 2980 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 07:46:52,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24179 states. [2022-07-21 07:46:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24179 to 24179. [2022-07-21 07:46:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24179 states, 24177 states have (on average 1.2529263349464368) internal successors, (30292), 24178 states have internal predecessors, (30292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24179 states to 24179 states and 30292 transitions. [2022-07-21 07:46:55,293 INFO L78 Accepts]: Start accepts. Automaton has 24179 states and 30292 transitions. Word has length 83 [2022-07-21 07:46:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:46:55,294 INFO L495 AbstractCegarLoop]: Abstraction has 24179 states and 30292 transitions. [2022-07-21 07:46:55,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:46:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 24179 states and 30292 transitions. [2022-07-21 07:46:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 07:46:55,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:46:55,295 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 07:46:55,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 07:46:55,295 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:46:55,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:46:55,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1741675261, now seen corresponding path program 1 times [2022-07-21 07:46:55,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:46:55,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263494329] [2022-07-21 07:46:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:55,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:46:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:55,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:46:55,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263494329] [2022-07-21 07:46:55,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263494329] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 07:46:55,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603090535] [2022-07-21 07:46:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:46:55,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:46:55,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:46:55,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 07:46:55,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 07:46:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:46:55,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 07:46:55,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:46:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:56,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:46:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:46:56,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603090535] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:46:56,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 07:46:56,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-07-21 07:46:56,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656286098] [2022-07-21 07:46:56,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 07:46:56,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 07:46:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:46:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 07:46:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-07-21 07:46:56,563 INFO L87 Difference]: Start difference. First operand 24179 states and 30292 transitions. Second operand has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 20 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 07:47:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:47:10,370 INFO L93 Difference]: Finished difference Result 110724 states and 135648 transitions. [2022-07-21 07:47:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 07:47:10,371 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 20 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-21 07:47:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:47:10,496 INFO L225 Difference]: With dead ends: 110724 [2022-07-21 07:47:10,496 INFO L226 Difference]: Without dead ends: 91629 [2022-07-21 07:47:10,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2022-07-21 07:47:10,519 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 15740 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15740 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:47:10,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15740 Valid, 6394 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 07:47:10,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91629 states.