./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.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 55ec916898aa0c4eb40269e81429fc0273ca07ec4caf7be0cd441cce0028ad79 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:55:24,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:55:24,777 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:55:24,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:55:24,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:55:24,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:55:24,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:55:24,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:55:24,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:55:24,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:55:24,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:55:24,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:55:24,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:55:24,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:55:24,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:55:24,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:55:24,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:55:24,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:55:24,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:55:24,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:55:24,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:55:24,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:55:24,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:55:24,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:55:24,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:55:24,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:55:24,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:55:24,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:55:24,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:55:24,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:55:24,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:55:24,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:55:24,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:55:24,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:55:24,843 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:55:24,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:55:24,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:55:24,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:55:24,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:55:24,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:55:24,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:55:24,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:55:24,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:55:24,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:55:24,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:55:24,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:55:24,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:55:24,861 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:55:24,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:55:24,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:55:24,861 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:55:24,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:55:24,862 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:55:24,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:55:24,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:55:24,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:55:24,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:55:24,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:55:24,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:55:24,863 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:55:24,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:55:24,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:55:24,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:55:24,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:55:24,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:55:24,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:55:24,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:55:24,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:55:24,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:55:24,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:55:24,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:55:24,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:55:24,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:55:24,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:55:24,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:55:24,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:55:24,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55ec916898aa0c4eb40269e81429fc0273ca07ec4caf7be0cd441cce0028ad79 [2021-12-17 15:55:25,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:55:25,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:55:25,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:55:25,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:55:25,103 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:55:25,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2021-12-17 15:55:25,146 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba82db6a/a311014b8bd842e58a50dc59748e1cb8/FLAG2969f1394 [2021-12-17 15:55:25,518 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:55:25,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2021-12-17 15:55:25,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba82db6a/a311014b8bd842e58a50dc59748e1cb8/FLAG2969f1394 [2021-12-17 15:55:25,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba82db6a/a311014b8bd842e58a50dc59748e1cb8 [2021-12-17 15:55:25,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:55:25,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:55:25,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:55:25,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:55:25,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:55:25,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:25,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544b37c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25, skipping insertion in model container [2021-12-17 15:55:25,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:25,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:55:25,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:55:25,824 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/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c[26555,26568] [2021-12-17 15:55:25,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:55:25,845 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:55:25,910 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/seq-mthreaded/pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c[26555,26568] [2021-12-17 15:55:25,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:55:25,926 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:55:25,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25 WrapperNode [2021-12-17 15:55:25,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:55:25,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:55:25,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:55:25,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:55:25,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:25,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:25,986 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 520 [2021-12-17 15:55:25,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:55:25,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:55:25,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:55:25,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:55:25,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:25,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:26,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:26,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:26,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:26,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:26,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:26,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:55:26,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:55:26,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:55:26,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:55:26,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (1/1) ... [2021-12-17 15:55:26,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:55:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:55:26,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 15:55:26,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 15:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:55:26,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:55:26,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:55:26,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:55:26,248 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:55:26,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:55:26,606 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:55:26,611 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:55:26,612 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 15:55:26,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:55:26 BoogieIcfgContainer [2021-12-17 15:55:26,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:55:26,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:55:26,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:55:26,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:55:26,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:55:25" (1/3) ... [2021-12-17 15:55:26,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c4abc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:55:26, skipping insertion in model container [2021-12-17 15:55:26,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:55:25" (2/3) ... [2021-12-17 15:55:26,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c4abc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:55:26, skipping insertion in model container [2021-12-17 15:55:26,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:55:26" (3/3) ... [2021-12-17 15:55:26,619 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8_overflow.ufo.UNBOUNDED.pals.c [2021-12-17 15:55:26,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:55:26,622 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:55:26,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:55:26,674 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 15:55:26,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:55:26,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.7655172413793103) internal successors, (256), 146 states have internal predecessors, (256), 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) [2021-12-17 15:55:26,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-17 15:55:26,696 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:26,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:26,697 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:26,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -486996250, now seen corresponding path program 1 times [2021-12-17 15:55:26,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:26,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225500560] [2021-12-17 15:55:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:26,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:26,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:26,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225500560] [2021-12-17 15:55:26,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225500560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:26,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:26,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 15:55:26,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046263674] [2021-12-17 15:55:26,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:26,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 15:55:26,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 15:55:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:55:26,978 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.7655172413793103) internal successors, (256), 146 states have internal predecessors, (256), 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 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2021-12-17 15:55:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:27,012 INFO L93 Difference]: Finished difference Result 224 states and 381 transitions. [2021-12-17 15:55:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 15:55:27,014 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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 45 [2021-12-17 15:55:27,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:27,024 INFO L225 Difference]: With dead ends: 224 [2021-12-17 15:55:27,024 INFO L226 Difference]: Without dead ends: 143 [2021-12-17 15:55:27,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:55:27,032 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:27,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-17 15:55:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-17 15:55:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.7535211267605635) internal successors, (249), 142 states have internal predecessors, (249), 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) [2021-12-17 15:55:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 249 transitions. [2021-12-17 15:55:27,060 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 249 transitions. Word has length 45 [2021-12-17 15:55:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:27,060 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 249 transitions. [2021-12-17 15:55:27,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 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) [2021-12-17 15:55:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 249 transitions. [2021-12-17 15:55:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-17 15:55:27,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:27,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:27,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:55:27,062 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:27,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:27,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1858803548, now seen corresponding path program 1 times [2021-12-17 15:55:27,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:27,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616113809] [2021-12-17 15:55:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:27,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:27,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616113809] [2021-12-17 15:55:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616113809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:27,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:27,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:55:27,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020377621] [2021-12-17 15:55:27,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:27,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:55:27,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:55:27,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:55:27,185 INFO L87 Difference]: Start difference. First operand 143 states and 249 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-12-17 15:55:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:27,287 INFO L93 Difference]: Finished difference Result 223 states and 374 transitions. [2021-12-17 15:55:27,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 15:55:27,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2021-12-17 15:55:27,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:27,289 INFO L225 Difference]: With dead ends: 223 [2021-12-17 15:55:27,289 INFO L226 Difference]: Without dead ends: 143 [2021-12-17 15:55:27,290 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:27,291 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 3 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:27,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 924 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:55:27,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-17 15:55:27,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-12-17 15:55:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.323943661971831) internal successors, (188), 142 states have internal predecessors, (188), 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) [2021-12-17 15:55:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 188 transitions. [2021-12-17 15:55:27,301 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 188 transitions. Word has length 45 [2021-12-17 15:55:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:27,302 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 188 transitions. [2021-12-17 15:55:27,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2021-12-17 15:55:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 188 transitions. [2021-12-17 15:55:27,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:55:27,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:27,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:27,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:55:27,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:27,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1176555156, now seen corresponding path program 1 times [2021-12-17 15:55:27,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:27,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463328778] [2021-12-17 15:55:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:27,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:27,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:27,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463328778] [2021-12-17 15:55:27,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463328778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:27,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:27,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:27,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132974145] [2021-12-17 15:55:27,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:27,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:27,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:27,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:27,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:27,453 INFO L87 Difference]: Start difference. First operand 143 states and 188 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:27,466 INFO L93 Difference]: Finished difference Result 289 states and 420 transitions. [2021-12-17 15:55:27,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:27,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-12-17 15:55:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:27,468 INFO L225 Difference]: With dead ends: 289 [2021-12-17 15:55:27,468 INFO L226 Difference]: Without dead ends: 213 [2021-12-17 15:55:27,469 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:27,470 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 111 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 414 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 [2021-12-17 15:55:27,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 414 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:27,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-17 15:55:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2021-12-17 15:55:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4142857142857144) internal successors, (297), 210 states have internal predecessors, (297), 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) [2021-12-17 15:55:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 297 transitions. [2021-12-17 15:55:27,480 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 297 transitions. Word has length 105 [2021-12-17 15:55:27,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:27,480 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 297 transitions. [2021-12-17 15:55:27,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,481 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 297 transitions. [2021-12-17 15:55:27,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:55:27,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:27,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:27,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:55:27,483 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:27,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1701405430, now seen corresponding path program 1 times [2021-12-17 15:55:27,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:27,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873281212] [2021-12-17 15:55:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:27,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:27,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:27,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873281212] [2021-12-17 15:55:27,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873281212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:27,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:27,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:27,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545534747] [2021-12-17 15:55:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:27,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:27,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:27,563 INFO L87 Difference]: Start difference. First operand 211 states and 297 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:27,586 INFO L93 Difference]: Finished difference Result 487 states and 737 transitions. [2021-12-17 15:55:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-12-17 15:55:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:27,590 INFO L225 Difference]: With dead ends: 487 [2021-12-17 15:55:27,590 INFO L226 Difference]: Without dead ends: 343 [2021-12-17 15:55:27,594 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:27,596 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 107 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 413 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 [2021-12-17 15:55:27,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:27,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-17 15:55:27,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2021-12-17 15:55:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.4823529411764707) internal successors, (504), 340 states have internal predecessors, (504), 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) [2021-12-17 15:55:27,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 504 transitions. [2021-12-17 15:55:27,611 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 504 transitions. Word has length 105 [2021-12-17 15:55:27,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:27,611 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 504 transitions. [2021-12-17 15:55:27,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,612 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 504 transitions. [2021-12-17 15:55:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:55:27,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:27,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:27,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:55:27,613 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:27,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash -179136962, now seen corresponding path program 1 times [2021-12-17 15:55:27,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:27,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301374522] [2021-12-17 15:55:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:27,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:27,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:27,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301374522] [2021-12-17 15:55:27,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301374522] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:27,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:27,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:27,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461669772] [2021-12-17 15:55:27,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:27,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:27,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:27,701 INFO L87 Difference]: Start difference. First operand 341 states and 504 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:27,732 INFO L93 Difference]: Finished difference Result 865 states and 1338 transitions. [2021-12-17 15:55:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:27,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-12-17 15:55:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:27,737 INFO L225 Difference]: With dead ends: 865 [2021-12-17 15:55:27,737 INFO L226 Difference]: Without dead ends: 591 [2021-12-17 15:55:27,738 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:27,741 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 103 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 412 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 [2021-12-17 15:55:27,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 412 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-17 15:55:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2021-12-17 15:55:27,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.5238095238095237) internal successors, (896), 588 states have internal predecessors, (896), 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) [2021-12-17 15:55:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 896 transitions. [2021-12-17 15:55:27,765 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 896 transitions. Word has length 105 [2021-12-17 15:55:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:27,767 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 896 transitions. [2021-12-17 15:55:27,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,769 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 896 transitions. [2021-12-17 15:55:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:55:27,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:27,770 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:27,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:55:27,770 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1430042254, now seen corresponding path program 1 times [2021-12-17 15:55:27,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:27,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221147486] [2021-12-17 15:55:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:27,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:27,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:27,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221147486] [2021-12-17 15:55:27,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221147486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:27,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:27,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:27,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407756274] [2021-12-17 15:55:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:27,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:27,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:27,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:27,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:27,861 INFO L87 Difference]: Start difference. First operand 589 states and 896 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:27,890 INFO L93 Difference]: Finished difference Result 1585 states and 2474 transitions. [2021-12-17 15:55:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:27,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-12-17 15:55:27,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:27,898 INFO L225 Difference]: With dead ends: 1585 [2021-12-17 15:55:27,898 INFO L226 Difference]: Without dead ends: 1063 [2021-12-17 15:55:27,899 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:27,903 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 99 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 411 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 [2021-12-17 15:55:27,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 411 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:27,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-12-17 15:55:27,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2021-12-17 15:55:27,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.5433962264150944) internal successors, (1636), 1060 states have internal predecessors, (1636), 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) [2021-12-17 15:55:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1636 transitions. [2021-12-17 15:55:27,928 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1636 transitions. Word has length 105 [2021-12-17 15:55:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:27,929 INFO L470 AbstractCegarLoop]: Abstraction has 1061 states and 1636 transitions. [2021-12-17 15:55:27,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1636 transitions. [2021-12-17 15:55:27,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:55:27,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:27,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:27,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:55:27,931 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:27,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2119342312, now seen corresponding path program 1 times [2021-12-17 15:55:27,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:27,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127697842] [2021-12-17 15:55:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:27,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:28,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:28,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127697842] [2021-12-17 15:55:28,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127697842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:28,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:28,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:28,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355430301] [2021-12-17 15:55:28,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:28,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:28,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:28,030 INFO L87 Difference]: Start difference. First operand 1061 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:28,074 INFO L93 Difference]: Finished difference Result 2953 states and 4614 transitions. [2021-12-17 15:55:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:28,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-12-17 15:55:28,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:28,084 INFO L225 Difference]: With dead ends: 2953 [2021-12-17 15:55:28,084 INFO L226 Difference]: Without dead ends: 1959 [2021-12-17 15:55:28,086 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:28,089 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 95 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 410 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 [2021-12-17 15:55:28,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 410 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:28,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-12-17 15:55:28,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2021-12-17 15:55:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1957 states, 1956 states have (on average 1.5480572597137015) internal successors, (3028), 1956 states have internal predecessors, (3028), 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) [2021-12-17 15:55:28,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3028 transitions. [2021-12-17 15:55:28,146 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3028 transitions. Word has length 105 [2021-12-17 15:55:28,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:28,147 INFO L470 AbstractCegarLoop]: Abstraction has 1957 states and 3028 transitions. [2021-12-17 15:55:28,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3028 transitions. [2021-12-17 15:55:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:55:28,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:28,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:28,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:55:28,150 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 179311454, now seen corresponding path program 1 times [2021-12-17 15:55:28,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:28,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158032984] [2021-12-17 15:55:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:28,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:28,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:28,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158032984] [2021-12-17 15:55:28,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158032984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:28,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:28,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:28,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068511237] [2021-12-17 15:55:28,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:28,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:28,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:28,207 INFO L87 Difference]: Start difference. First operand 1957 states and 3028 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:28,281 INFO L93 Difference]: Finished difference Result 5545 states and 8630 transitions. [2021-12-17 15:55:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:28,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 105 [2021-12-17 15:55:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:28,295 INFO L225 Difference]: With dead ends: 5545 [2021-12-17 15:55:28,295 INFO L226 Difference]: Without dead ends: 3655 [2021-12-17 15:55:28,298 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:28,298 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 91 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 409 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 [2021-12-17 15:55:28,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 409 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2021-12-17 15:55:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3653. [2021-12-17 15:55:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 3652 states have (on average 1.5432639649507118) internal successors, (5636), 3652 states have internal predecessors, (5636), 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) [2021-12-17 15:55:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5636 transitions. [2021-12-17 15:55:28,423 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5636 transitions. Word has length 105 [2021-12-17 15:55:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:28,423 INFO L470 AbstractCegarLoop]: Abstraction has 3653 states and 5636 transitions. [2021-12-17 15:55:28,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2021-12-17 15:55:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5636 transitions. [2021-12-17 15:55:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 15:55:28,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:28,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:28,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:55:28,426 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1414973228, now seen corresponding path program 1 times [2021-12-17 15:55:28,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:28,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173602561] [2021-12-17 15:55:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:28,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:28,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:28,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173602561] [2021-12-17 15:55:28,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173602561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:28,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:28,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 15:55:28,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518550859] [2021-12-17 15:55:28,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:28,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 15:55:28,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:28,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 15:55:28,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:55:28,553 INFO L87 Difference]: Start difference. First operand 3653 states and 5636 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2021-12-17 15:55:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:30,216 INFO L93 Difference]: Finished difference Result 61029 states and 94740 transitions. [2021-12-17 15:55:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 15:55:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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 105 [2021-12-17 15:55:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:30,361 INFO L225 Difference]: With dead ends: 61029 [2021-12-17 15:55:30,361 INFO L226 Difference]: Without dead ends: 57443 [2021-12-17 15:55:30,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-12-17 15:55:30,384 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 4682 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:30,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4682 Valid, 2170 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 15:55:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57443 states. [2021-12-17 15:55:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57443 to 7237. [2021-12-17 15:55:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7237 states, 7236 states have (on average 1.5306799336650083) internal successors, (11076), 7236 states have internal predecessors, (11076), 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) [2021-12-17 15:55:31,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 11076 transitions. [2021-12-17 15:55:31,121 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 11076 transitions. Word has length 105 [2021-12-17 15:55:31,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:31,122 INFO L470 AbstractCegarLoop]: Abstraction has 7237 states and 11076 transitions. [2021-12-17 15:55:31,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 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) [2021-12-17 15:55:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 11076 transitions. [2021-12-17 15:55:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-17 15:55:31,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:31,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:31,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:55:31,124 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash 299673892, now seen corresponding path program 1 times [2021-12-17 15:55:31,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:31,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842284168] [2021-12-17 15:55:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:31,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:31,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:31,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842284168] [2021-12-17 15:55:31,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842284168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:31,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:31,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:31,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053924740] [2021-12-17 15:55:31,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:31,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:31,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:31,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:31,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:31,177 INFO L87 Difference]: Start difference. First operand 7237 states and 11076 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-17 15:55:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:31,484 INFO L93 Difference]: Finished difference Result 17835 states and 27336 transitions. [2021-12-17 15:55:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:31,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2021-12-17 15:55:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:31,505 INFO L225 Difference]: With dead ends: 17835 [2021-12-17 15:55:31,506 INFO L226 Difference]: Without dead ends: 10665 [2021-12-17 15:55:31,514 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:31,515 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 75 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:31,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 341 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10665 states. [2021-12-17 15:55:31,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10665 to 10663. [2021-12-17 15:55:31,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10663 states, 10662 states have (on average 1.5222284749577941) internal successors, (16230), 10662 states have internal predecessors, (16230), 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) [2021-12-17 15:55:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10663 states to 10663 states and 16230 transitions. [2021-12-17 15:55:31,889 INFO L78 Accepts]: Start accepts. Automaton has 10663 states and 16230 transitions. Word has length 107 [2021-12-17 15:55:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:31,889 INFO L470 AbstractCegarLoop]: Abstraction has 10663 states and 16230 transitions. [2021-12-17 15:55:31,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-17 15:55:31,889 INFO L276 IsEmpty]: Start isEmpty. Operand 10663 states and 16230 transitions. [2021-12-17 15:55:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-17 15:55:31,890 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:31,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:31,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 15:55:31,890 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:31,891 INFO L85 PathProgramCache]: Analyzing trace with hash 366167404, now seen corresponding path program 1 times [2021-12-17 15:55:31,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:31,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678589388] [2021-12-17 15:55:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:31,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:32,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:32,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:32,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678589388] [2021-12-17 15:55:32,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678589388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:32,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:32,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 15:55:32,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433717831] [2021-12-17 15:55:32,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:32,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 15:55:32,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:32,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 15:55:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:55:32,108 INFO L87 Difference]: Start difference. First operand 10663 states and 16230 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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) [2021-12-17 15:55:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:32,844 INFO L93 Difference]: Finished difference Result 21259 states and 32392 transitions. [2021-12-17 15:55:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:55:32,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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 107 [2021-12-17 15:55:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:32,864 INFO L225 Difference]: With dead ends: 21259 [2021-12-17 15:55:32,864 INFO L226 Difference]: Without dead ends: 10665 [2021-12-17 15:55:32,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-12-17 15:55:32,877 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1024 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:32,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1064 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:55:32,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10665 states. [2021-12-17 15:55:33,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10665 to 10663. [2021-12-17 15:55:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10663 states, 10662 states have (on average 1.5132245357343839) internal successors, (16134), 10662 states have internal predecessors, (16134), 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) [2021-12-17 15:55:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10663 states to 10663 states and 16134 transitions. [2021-12-17 15:55:33,267 INFO L78 Accepts]: Start accepts. Automaton has 10663 states and 16134 transitions. Word has length 107 [2021-12-17 15:55:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:33,268 INFO L470 AbstractCegarLoop]: Abstraction has 10663 states and 16134 transitions. [2021-12-17 15:55:33,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 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) [2021-12-17 15:55:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 10663 states and 16134 transitions. [2021-12-17 15:55:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-17 15:55:33,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:33,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:33,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 15:55:33,270 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:33,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2139885816, now seen corresponding path program 1 times [2021-12-17 15:55:33,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:33,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462044130] [2021-12-17 15:55:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:33,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:33,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:33,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462044130] [2021-12-17 15:55:33,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462044130] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:33,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:33,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:33,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482327501] [2021-12-17 15:55:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:33,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:33,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:33,374 INFO L87 Difference]: Start difference. First operand 10663 states and 16134 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-17 15:55:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:33,880 INFO L93 Difference]: Finished difference Result 30699 states and 46344 transitions. [2021-12-17 15:55:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:33,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2021-12-17 15:55:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:33,917 INFO L225 Difference]: With dead ends: 30699 [2021-12-17 15:55:33,917 INFO L226 Difference]: Without dead ends: 20105 [2021-12-17 15:55:33,929 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:33,930 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 83 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 399 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 [2021-12-17 15:55:33,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 399 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20105 states. [2021-12-17 15:55:34,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20105 to 20103. [2021-12-17 15:55:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20103 states, 20102 states have (on average 1.496666998308626) internal successors, (30086), 20102 states have internal predecessors, (30086), 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) [2021-12-17 15:55:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20103 states to 20103 states and 30086 transitions. [2021-12-17 15:55:34,922 INFO L78 Accepts]: Start accepts. Automaton has 20103 states and 30086 transitions. Word has length 107 [2021-12-17 15:55:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:34,922 INFO L470 AbstractCegarLoop]: Abstraction has 20103 states and 30086 transitions. [2021-12-17 15:55:34,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-17 15:55:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 20103 states and 30086 transitions. [2021-12-17 15:55:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-17 15:55:34,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:34,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:34,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 15:55:34,924 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash -892378200, now seen corresponding path program 1 times [2021-12-17 15:55:34,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:34,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024613238] [2021-12-17 15:55:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:34,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:34,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:34,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024613238] [2021-12-17 15:55:34,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024613238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:34,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:34,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:55:34,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628792702] [2021-12-17 15:55:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:34,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:55:34,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:55:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:55:34,969 INFO L87 Difference]: Start difference. First operand 20103 states and 30086 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-17 15:55:36,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:36,088 INFO L93 Difference]: Finished difference Result 57867 states and 86280 transitions. [2021-12-17 15:55:36,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:55:36,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2021-12-17 15:55:36,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:36,144 INFO L225 Difference]: With dead ends: 57867 [2021-12-17 15:55:36,145 INFO L226 Difference]: Without dead ends: 37833 [2021-12-17 15:55:36,167 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:36,168 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 87 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 408 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 [2021-12-17 15:55:36,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 408 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:36,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37833 states. [2021-12-17 15:55:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37833 to 37831. [2021-12-17 15:55:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37831 states, 37830 states have (on average 1.4770816812053926) internal successors, (55878), 37830 states have internal predecessors, (55878), 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) [2021-12-17 15:55:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37831 states to 37831 states and 55878 transitions. [2021-12-17 15:55:37,858 INFO L78 Accepts]: Start accepts. Automaton has 37831 states and 55878 transitions. Word has length 107 [2021-12-17 15:55:37,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:37,859 INFO L470 AbstractCegarLoop]: Abstraction has 37831 states and 55878 transitions. [2021-12-17 15:55:37,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2021-12-17 15:55:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 37831 states and 55878 transitions. [2021-12-17 15:55:37,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 15:55:37,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:37,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:37,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 15:55:37,860 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1948435132, now seen corresponding path program 1 times [2021-12-17 15:55:37,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:37,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658879159] [2021-12-17 15:55:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:37,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:37,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:37,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658879159] [2021-12-17 15:55:37,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658879159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:37,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:37,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:55:37,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613182318] [2021-12-17 15:55:37,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:37,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:55:37,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:55:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:55:37,952 INFO L87 Difference]: Start difference. First operand 37831 states and 55878 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 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) [2021-12-17 15:55:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:39,414 INFO L93 Difference]: Finished difference Result 75593 states and 111687 transitions. [2021-12-17 15:55:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:55:39,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 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 108 [2021-12-17 15:55:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:39,474 INFO L225 Difference]: With dead ends: 75593 [2021-12-17 15:55:39,474 INFO L226 Difference]: Without dead ends: 37831 [2021-12-17 15:55:39,507 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:39,508 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 731 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:39,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 241 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 15:55:39,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37831 states. [2021-12-17 15:55:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37831 to 37831. [2021-12-17 15:55:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37831 states, 37830 states have (on average 1.4669310071371926) internal successors, (55494), 37830 states have internal predecessors, (55494), 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) [2021-12-17 15:55:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37831 states to 37831 states and 55494 transitions. [2021-12-17 15:55:41,210 INFO L78 Accepts]: Start accepts. Automaton has 37831 states and 55494 transitions. Word has length 108 [2021-12-17 15:55:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:41,210 INFO L470 AbstractCegarLoop]: Abstraction has 37831 states and 55494 transitions. [2021-12-17 15:55:41,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 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) [2021-12-17 15:55:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 37831 states and 55494 transitions. [2021-12-17 15:55:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 15:55:41,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:41,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:41,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 15:55:41,211 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:41,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1104429630, now seen corresponding path program 1 times [2021-12-17 15:55:41,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:41,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023074295] [2021-12-17 15:55:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:41,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:41,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:41,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023074295] [2021-12-17 15:55:41,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023074295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:41,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:41,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:55:41,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249558807] [2021-12-17 15:55:41,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:41,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:55:41,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:55:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:55:41,264 INFO L87 Difference]: Start difference. First operand 37831 states and 55494 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 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) [2021-12-17 15:55:42,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:42,603 INFO L93 Difference]: Finished difference Result 75593 states and 110919 transitions. [2021-12-17 15:55:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:55:42,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 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 108 [2021-12-17 15:55:42,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:42,651 INFO L225 Difference]: With dead ends: 75593 [2021-12-17 15:55:42,651 INFO L226 Difference]: Without dead ends: 37831 [2021-12-17 15:55:42,668 INFO L932 BasicCegarLoop]: 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 [2021-12-17 15:55:42,669 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 691 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:42,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [691 Valid, 236 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:55:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37831 states. [2021-12-17 15:55:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37831 to 37831. [2021-12-17 15:55:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37831 states, 37830 states have (on average 1.4567803330689928) internal successors, (55110), 37830 states have internal predecessors, (55110), 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) [2021-12-17 15:55:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37831 states to 37831 states and 55110 transitions. [2021-12-17 15:55:44,288 INFO L78 Accepts]: Start accepts. Automaton has 37831 states and 55110 transitions. Word has length 108 [2021-12-17 15:55:44,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:44,288 INFO L470 AbstractCegarLoop]: Abstraction has 37831 states and 55110 transitions. [2021-12-17 15:55:44,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 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) [2021-12-17 15:55:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 37831 states and 55110 transitions. [2021-12-17 15:55:44,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 15:55:44,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:44,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:44,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 15:55:44,289 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:44,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1806029504, now seen corresponding path program 1 times [2021-12-17 15:55:44,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:44,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214232828] [2021-12-17 15:55:44,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:44,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:44,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:55:44,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:44,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214232828] [2021-12-17 15:55:44,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214232828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:44,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:44,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:55:44,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956964653] [2021-12-17 15:55:44,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:44,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:55:44,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:44,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:55:44,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:55:44,379 INFO L87 Difference]: Start difference. First operand 37831 states and 55110 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2021-12-17 15:55:47,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:55:47,200 INFO L93 Difference]: Finished difference Result 69998 states and 101141 transitions. [2021-12-17 15:55:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:55:47,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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 108 [2021-12-17 15:55:47,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:55:47,284 INFO L225 Difference]: With dead ends: 69998 [2021-12-17 15:55:47,285 INFO L226 Difference]: Without dead ends: 69996 [2021-12-17 15:55:47,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:55:47,300 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 328 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:55:47,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 777 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:55:47,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69996 states. [2021-12-17 15:55:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69996 to 39367. [2021-12-17 15:55:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39367 states, 39366 states have (on average 1.4357059391352944) internal successors, (56518), 39366 states have internal predecessors, (56518), 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) [2021-12-17 15:55:49,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39367 states to 39367 states and 56518 transitions. [2021-12-17 15:55:49,130 INFO L78 Accepts]: Start accepts. Automaton has 39367 states and 56518 transitions. Word has length 108 [2021-12-17 15:55:49,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:55:49,132 INFO L470 AbstractCegarLoop]: Abstraction has 39367 states and 56518 transitions. [2021-12-17 15:55:49,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 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) [2021-12-17 15:55:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 39367 states and 56518 transitions. [2021-12-17 15:55:49,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-17 15:55:49,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:55:49,160 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:55:49,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 15:55:49,160 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:55:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:55:49,161 INFO L85 PathProgramCache]: Analyzing trace with hash 150223880, now seen corresponding path program 1 times [2021-12-17 15:55:49,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:55:49,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950515055] [2021-12-17 15:55:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:55:49,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:55:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:55:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-17 15:55:49,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:55:49,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950515055] [2021-12-17 15:55:49,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950515055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:55:49,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:55:49,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 15:55:49,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643919927] [2021-12-17 15:55:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:55:49,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 15:55:49,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:55:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 15:55:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:55:49,279 INFO L87 Difference]: Start difference. First operand 39367 states and 56518 transitions. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 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) [2021-12-17 15:56:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:56:02,008 INFO L93 Difference]: Finished difference Result 361305 states and 518543 transitions. [2021-12-17 15:56:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 15:56:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 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 148 [2021-12-17 15:56:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:56:02,565 INFO L225 Difference]: With dead ends: 361305 [2021-12-17 15:56:02,566 INFO L226 Difference]: Without dead ends: 322007 [2021-12-17 15:56:02,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-12-17 15:56:02,664 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 3119 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:56:02,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3119 Valid, 1518 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:56:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322007 states.