./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label02.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/eca-rers2012/Problem13_label02.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 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:35:18,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:35:18,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:35:18,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:35:18,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:35:18,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:35:18,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:35:18,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:35:18,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:35:18,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:35:18,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:35:18,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:35:18,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:35:18,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:35:18,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:35:18,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:35:18,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:35:18,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:35:18,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:35:18,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:35:18,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:35:18,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:35:18,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:35:18,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:35:18,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:35:18,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:35:18,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:35:18,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:35:18,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:35:18,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:35:18,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:35:18,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:35:18,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:35:18,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:35:18,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:35:18,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:35:18,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:35:18,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:35:18,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:35:18,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:35:18,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:35:18,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:35:18,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:35:18,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:35:18,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:35:18,700 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:35:18,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:35:18,701 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:35:18,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:35:18,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:35:18,701 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:35:18,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:35:18,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:35:18,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:35:18,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:35:18,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:35:18,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:35:18,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:35:18,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:35:18,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:35:18,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:35:18,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:35:18,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:35:18,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:35:18,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:35:18,705 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:35:18,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:35:18,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:35:18,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:35:18,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e [2021-12-17 04:35:18,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:35:18,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:35:18,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:35:18,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:35:18,888 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:35:18,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2021-12-17 04:35:18,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ccd4f27/42473846c4fb4edcb5dc7865fc9e5897/FLAG18492f5d0 [2021-12-17 04:35:19,489 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:35:19,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2021-12-17 04:35:19,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ccd4f27/42473846c4fb4edcb5dc7865fc9e5897/FLAG18492f5d0 [2021-12-17 04:35:19,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66ccd4f27/42473846c4fb4edcb5dc7865fc9e5897 [2021-12-17 04:35:19,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:35:19,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:35:19,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:35:19,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:35:19,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:35:19,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:35:19" (1/1) ... [2021-12-17 04:35:19,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f0d0ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:19, skipping insertion in model container [2021-12-17 04:35:19,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:35:19" (1/1) ... [2021-12-17 04:35:19,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:35:20,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:35:20,244 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/eca-rers2012/Problem13_label02.c[5671,5684] [2021-12-17 04:35:20,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:35:20,816 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:35:20,847 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/eca-rers2012/Problem13_label02.c[5671,5684] [2021-12-17 04:35:21,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:35:21,320 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:35:21,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21 WrapperNode [2021-12-17 04:35:21,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:35:21,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:35:21,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:35:21,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:35:21,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:21,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:21,863 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-12-17 04:35:21,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:35:21,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:35:21,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:35:21,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:35:21,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:21,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:22,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:22,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:22,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:22,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:22,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:22,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:35:22,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:35:22,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:35:22,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:35:22,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (1/1) ... [2021-12-17 04:35:22,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:35:22,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:35:22,513 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 04:35:22,531 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 04:35:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:35:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:35:22,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:35:22,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:35:22,588 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:35:22,589 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 04:35:25,885 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 04:35:25,920 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 04:35:25,920 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 04:35:25,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:35:25 BoogieIcfgContainer [2021-12-17 04:35:25,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 04:35:25,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 04:35:25,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 04:35:25,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 04:35:25,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:35:19" (1/3) ... [2021-12-17 04:35:25,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59bc7d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:35:25, skipping insertion in model container [2021-12-17 04:35:25,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:35:21" (2/3) ... [2021-12-17 04:35:25,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59bc7d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:35:25, skipping insertion in model container [2021-12-17 04:35:25,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:35:25" (3/3) ... [2021-12-17 04:35:25,933 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label02.c [2021-12-17 04:35:25,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 04:35:25,937 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 04:35:25,991 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 04:35:26,002 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 04:35:26,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 04:35:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 04:35:26,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-17 04:35:26,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:26,043 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] [2021-12-17 04:35:26,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:26,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:26,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2021-12-17 04:35:26,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:26,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664080274] [2021-12-17 04:35:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:26,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:35:26,267 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 04:35:26,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:35:26,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664080274] [2021-12-17 04:35:26,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664080274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:35:26,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:35:26,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:35:26,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934925484] [2021-12-17 04:35:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:35:26,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:35:26,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:35:26,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:35:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:35:26,301 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 04:35:29,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:35:29,799 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2021-12-17 04:35:29,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:35:29,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 39 [2021-12-17 04:35:29,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:35:29,817 INFO L225 Difference]: With dead ends: 3082 [2021-12-17 04:35:29,817 INFO L226 Difference]: Without dead ends: 1899 [2021-12-17 04:35:29,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:35:29,824 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1000 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:35:29,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-17 04:35:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2021-12-17 04:35:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2021-12-17 04:35:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 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 04:35:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2021-12-17 04:35:29,913 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 39 [2021-12-17 04:35:29,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:35:29,913 INFO L470 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2021-12-17 04:35:29,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 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 04:35:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2021-12-17 04:35:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 04:35:29,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:29,916 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:29,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 04:35:29,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1426087594, now seen corresponding path program 1 times [2021-12-17 04:35:29,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:29,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220354360] [2021-12-17 04:35:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:29,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:29,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:35:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:35:30,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:35:30,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220354360] [2021-12-17 04:35:30,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220354360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:35:30,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:35:30,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:35:30,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195110563] [2021-12-17 04:35:30,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:35:30,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:35:30,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:35:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:35:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:35:30,075 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 04:35:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:35:35,091 INFO L93 Difference]: Finished difference Result 6175 states and 10777 transitions. [2021-12-17 04:35:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:35:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2021-12-17 04:35:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:35:35,108 INFO L225 Difference]: With dead ends: 6175 [2021-12-17 04:35:35,109 INFO L226 Difference]: Without dead ends: 4283 [2021-12-17 04:35:35,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 04:35:35,117 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 2571 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 4231 mSolverCounterSat, 1314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 5545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1314 IncrementalHoareTripleChecker+Valid, 4231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-12-17 04:35:35,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2571 Valid, 1099 Invalid, 5545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1314 Valid, 4231 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-12-17 04:35:35,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4283 states. [2021-12-17 04:35:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4283 to 4282. [2021-12-17 04:35:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4281 states have (on average 1.4879701004438215) internal successors, (6370), 4281 states have internal predecessors, (6370), 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 04:35:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 6370 transitions. [2021-12-17 04:35:35,182 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 6370 transitions. Word has length 104 [2021-12-17 04:35:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:35:35,183 INFO L470 AbstractCegarLoop]: Abstraction has 4282 states and 6370 transitions. [2021-12-17 04:35:35,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 04:35:35,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 6370 transitions. [2021-12-17 04:35:35,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-17 04:35:35,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:35,191 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:35:35,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 04:35:35,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:35,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1912821561, now seen corresponding path program 1 times [2021-12-17 04:35:35,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:35,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624609081] [2021-12-17 04:35:35,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:35,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:35:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:35:35,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:35:35,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624609081] [2021-12-17 04:35:35,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624609081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:35:35,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:35:35,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:35:35,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101694316] [2021-12-17 04:35:35,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:35:35,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:35:35,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:35:35,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:35:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:35:35,350 INFO L87 Difference]: Start difference. First operand 4282 states and 6370 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 04:35:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:35:40,809 INFO L93 Difference]: Finished difference Result 13465 states and 21399 transitions. [2021-12-17 04:35:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:35:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 164 [2021-12-17 04:35:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:35:40,838 INFO L225 Difference]: With dead ends: 13465 [2021-12-17 04:35:40,838 INFO L226 Difference]: Without dead ends: 9972 [2021-12-17 04:35:40,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:35:40,853 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 1640 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 6242 mSolverCounterSat, 842 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 7084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 6242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:35:40,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 1122 Invalid, 7084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 6242 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-17 04:35:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2021-12-17 04:35:40,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 9836. [2021-12-17 04:35:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9835 states have (on average 1.44178952719878) internal successors, (14180), 9835 states have internal predecessors, (14180), 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 04:35:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 14180 transitions. [2021-12-17 04:35:40,994 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 14180 transitions. Word has length 164 [2021-12-17 04:35:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:35:40,996 INFO L470 AbstractCegarLoop]: Abstraction has 9836 states and 14180 transitions. [2021-12-17 04:35:40,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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 04:35:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 14180 transitions. [2021-12-17 04:35:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-17 04:35:40,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:40,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:35:40,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 04:35:40,999 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1291731195, now seen corresponding path program 1 times [2021-12-17 04:35:40,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:41,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652531760] [2021-12-17 04:35:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:41,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:35:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-17 04:35:41,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:35:41,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652531760] [2021-12-17 04:35:41,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652531760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:35:41,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:35:41,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:35:41,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294554514] [2021-12-17 04:35:41,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:35:41,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:35:41,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:35:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:35:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:35:41,189 INFO L87 Difference]: Start difference. First operand 9836 states and 14180 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 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 04:35:44,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:35:44,278 INFO L93 Difference]: Finished difference Result 27581 states and 40496 transitions. [2021-12-17 04:35:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:35:44,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 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 206 [2021-12-17 04:35:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:35:44,318 INFO L225 Difference]: With dead ends: 27581 [2021-12-17 04:35:44,319 INFO L226 Difference]: Without dead ends: 18534 [2021-12-17 04:35:44,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:35:44,332 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 946 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-17 04:35:44,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 865 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-17 04:35:44,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18534 states. [2021-12-17 04:35:44,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18534 to 18523. [2021-12-17 04:35:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3250188964474678) internal successors, (24542), 18522 states have internal predecessors, (24542), 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 04:35:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24542 transitions. [2021-12-17 04:35:44,583 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24542 transitions. Word has length 206 [2021-12-17 04:35:44,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:35:44,584 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 24542 transitions. [2021-12-17 04:35:44,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 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 04:35:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24542 transitions. [2021-12-17 04:35:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-17 04:35:44,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:44,588 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:35:44,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 04:35:44,588 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1947524445, now seen corresponding path program 1 times [2021-12-17 04:35:44,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:44,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822448613] [2021-12-17 04:35:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:44,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:35:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:35:44,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:35:44,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822448613] [2021-12-17 04:35:44,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822448613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:35:44,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:35:44,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:35:44,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642599791] [2021-12-17 04:35:44,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:35:44,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:35:44,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:35:44,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:35:44,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:35:44,694 INFO L87 Difference]: Start difference. First operand 18523 states and 24542 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 04:35:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:35:47,918 INFO L93 Difference]: Finished difference Result 52015 states and 69793 transitions. [2021-12-17 04:35:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:35:47,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 257 [2021-12-17 04:35:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:35:47,971 INFO L225 Difference]: With dead ends: 52015 [2021-12-17 04:35:47,971 INFO L226 Difference]: Without dead ends: 34281 [2021-12-17 04:35:47,991 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 04:35:47,992 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 833 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-17 04:35:47,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 951 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-17 04:35:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34281 states. [2021-12-17 04:35:48,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34281 to 34271. [2021-12-17 04:35:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34271 states, 34270 states have (on average 1.2549168368835717) internal successors, (43006), 34270 states have internal predecessors, (43006), 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 04:35:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34271 states to 34271 states and 43006 transitions. [2021-12-17 04:35:48,386 INFO L78 Accepts]: Start accepts. Automaton has 34271 states and 43006 transitions. Word has length 257 [2021-12-17 04:35:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:35:48,387 INFO L470 AbstractCegarLoop]: Abstraction has 34271 states and 43006 transitions. [2021-12-17 04:35:48,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 04:35:48,391 INFO L276 IsEmpty]: Start isEmpty. Operand 34271 states and 43006 transitions. [2021-12-17 04:35:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-17 04:35:48,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:48,393 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:35:48,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 04:35:48,394 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1875220152, now seen corresponding path program 1 times [2021-12-17 04:35:48,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:48,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081133641] [2021-12-17 04:35:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:48,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:35:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-17 04:35:48,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:35:48,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081133641] [2021-12-17 04:35:48,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081133641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:35:48,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:35:48,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:35:48,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972073252] [2021-12-17 04:35:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:35:48,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:35:48,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:35:48,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:35:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:35:48,495 INFO L87 Difference]: Start difference. First operand 34271 states and 43006 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 04:35:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:35:51,664 INFO L93 Difference]: Finished difference Result 92929 states and 117609 transitions. [2021-12-17 04:35:51,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:35:51,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 269 [2021-12-17 04:35:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:35:51,741 INFO L225 Difference]: With dead ends: 92929 [2021-12-17 04:35:51,741 INFO L226 Difference]: Without dead ends: 59447 [2021-12-17 04:35:51,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:35:51,768 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:35:51,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:35:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59447 states. [2021-12-17 04:35:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59447 to 57082. [2021-12-17 04:35:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57082 states, 57081 states have (on average 1.1981920428864246) internal successors, (68394), 57081 states have internal predecessors, (68394), 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 04:35:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57082 states to 57082 states and 68394 transitions. [2021-12-17 04:35:52,318 INFO L78 Accepts]: Start accepts. Automaton has 57082 states and 68394 transitions. Word has length 269 [2021-12-17 04:35:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:35:52,319 INFO L470 AbstractCegarLoop]: Abstraction has 57082 states and 68394 transitions. [2021-12-17 04:35:52,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 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 04:35:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 57082 states and 68394 transitions. [2021-12-17 04:35:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-17 04:35:52,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:52,328 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:35:52,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 04:35:52,328 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:52,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -136295388, now seen corresponding path program 1 times [2021-12-17 04:35:52,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:52,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802653761] [2021-12-17 04:35:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:52,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:35:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 04:35:52,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:35:52,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802653761] [2021-12-17 04:35:52,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802653761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:35:52,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:35:52,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:35:52,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187779276] [2021-12-17 04:35:52,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:35:52,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:35:52,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:35:52,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:35:52,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:35:52,431 INFO L87 Difference]: Start difference. First operand 57082 states and 68394 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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 04:35:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:35:58,386 INFO L93 Difference]: Finished difference Result 154524 states and 187111 transitions. [2021-12-17 04:35:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:35:58,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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 307 [2021-12-17 04:35:58,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:35:58,520 INFO L225 Difference]: With dead ends: 154524 [2021-12-17 04:35:58,521 INFO L226 Difference]: Without dead ends: 98231 [2021-12-17 04:35:58,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:35:58,569 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 1747 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 6070 mSolverCounterSat, 1183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 7253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1183 IncrementalHoareTripleChecker+Valid, 6070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:35:58,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 701 Invalid, 7253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1183 Valid, 6070 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-17 04:35:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98231 states. [2021-12-17 04:35:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98231 to 98101. [2021-12-17 04:35:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98101 states, 98100 states have (on average 1.1910601427115188) internal successors, (116843), 98100 states have internal predecessors, (116843), 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 04:35:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98101 states to 98101 states and 116843 transitions. [2021-12-17 04:35:59,907 INFO L78 Accepts]: Start accepts. Automaton has 98101 states and 116843 transitions. Word has length 307 [2021-12-17 04:35:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:35:59,907 INFO L470 AbstractCegarLoop]: Abstraction has 98101 states and 116843 transitions. [2021-12-17 04:35:59,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 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 04:35:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 98101 states and 116843 transitions. [2021-12-17 04:35:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-12-17 04:35:59,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:35:59,913 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 04:35:59,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 04:35:59,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:35:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:35:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2103186526, now seen corresponding path program 1 times [2021-12-17 04:35:59,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:35:59,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282545109] [2021-12-17 04:35:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:35:59,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:35:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 04:36:00,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:00,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282545109] [2021-12-17 04:36:00,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282545109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:00,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:36:00,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:36:00,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105210664] [2021-12-17 04:36:00,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:00,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:36:00,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:36:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:36:00,007 INFO L87 Difference]: Start difference. First operand 98101 states and 116843 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 04:36:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:03,381 INFO L93 Difference]: Finished difference Result 228507 states and 270719 transitions. [2021-12-17 04:36:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:36:03,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 322 [2021-12-17 04:36:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:03,560 INFO L225 Difference]: With dead ends: 228507 [2021-12-17 04:36:03,561 INFO L226 Difference]: Without dead ends: 131195 [2021-12-17 04:36:03,704 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 04:36:03,707 INFO L933 BasicCegarLoop]: 1852 mSDtfsCounter, 753 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:03,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 1994 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 04:36:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131195 states. [2021-12-17 04:36:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131195 to 128796. [2021-12-17 04:36:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128796 states, 128795 states have (on average 1.1659769400986064) internal successors, (150172), 128795 states have internal predecessors, (150172), 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 04:36:05,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128796 states to 128796 states and 150172 transitions. [2021-12-17 04:36:05,537 INFO L78 Accepts]: Start accepts. Automaton has 128796 states and 150172 transitions. Word has length 322 [2021-12-17 04:36:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:36:05,537 INFO L470 AbstractCegarLoop]: Abstraction has 128796 states and 150172 transitions. [2021-12-17 04:36:05,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 04:36:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 128796 states and 150172 transitions. [2021-12-17 04:36:05,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-12-17 04:36:05,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:36:05,542 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 04:36:05,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 04:36:05,543 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:36:05,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:36:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1640700213, now seen corresponding path program 1 times [2021-12-17 04:36:05,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:36:05,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244736328] [2021-12-17 04:36:05,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:05,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:36:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 245 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 04:36:05,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:05,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244736328] [2021-12-17 04:36:05,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244736328] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:36:05,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653932661] [2021-12-17 04:36:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:05,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:36:05,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:36:05,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:36:05,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 04:36:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:05,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:36:05,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:36:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-17 04:36:06,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:36:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653932661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:06,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:36:06,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-17 04:36:06,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860349950] [2021-12-17 04:36:06,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:06,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:36:06,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:06,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:36:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:36:06,639 INFO L87 Difference]: Start difference. First operand 128796 states and 150172 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 04:36:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:09,863 INFO L93 Difference]: Finished difference Result 256014 states and 298397 transitions. [2021-12-17 04:36:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:36:09,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 365 [2021-12-17 04:36:09,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:10,046 INFO L225 Difference]: With dead ends: 256014 [2021-12-17 04:36:10,046 INFO L226 Difference]: Without dead ends: 128007 [2021-12-17 04:36:10,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:36:10,109 INFO L933 BasicCegarLoop]: 1366 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:10,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 04:36:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128007 states. [2021-12-17 04:36:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128007 to 127215. [2021-12-17 04:36:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127215 states, 127214 states have (on average 1.1216847202351943) internal successors, (142694), 127214 states have internal predecessors, (142694), 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 04:36:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127215 states to 127215 states and 142694 transitions. [2021-12-17 04:36:11,712 INFO L78 Accepts]: Start accepts. Automaton has 127215 states and 142694 transitions. Word has length 365 [2021-12-17 04:36:11,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:36:11,712 INFO L470 AbstractCegarLoop]: Abstraction has 127215 states and 142694 transitions. [2021-12-17 04:36:11,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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 04:36:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 127215 states and 142694 transitions. [2021-12-17 04:36:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-12-17 04:36:11,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:36:11,721 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:36:11,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-17 04:36:11,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:36:11,936 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:36:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:36:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1400539525, now seen corresponding path program 1 times [2021-12-17 04:36:11,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:36:11,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978485317] [2021-12-17 04:36:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:11,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:36:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-17 04:36:12,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:12,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978485317] [2021-12-17 04:36:12,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978485317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:12,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:36:12,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:36:12,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876641092] [2021-12-17 04:36:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:12,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:36:12,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:12,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:36:12,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:36:12,118 INFO L87 Difference]: Start difference. First operand 127215 states and 142694 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 04:36:15,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:15,563 INFO L93 Difference]: Finished difference Result 285135 states and 323193 transitions. [2021-12-17 04:36:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:36:15,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 433 [2021-12-17 04:36:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:15,781 INFO L225 Difference]: With dead ends: 285135 [2021-12-17 04:36:15,781 INFO L226 Difference]: Without dead ends: 158709 [2021-12-17 04:36:15,824 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 04:36:15,824 INFO L933 BasicCegarLoop]: 1786 mSDtfsCounter, 780 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:15,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 1940 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 04:36:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158709 states. [2021-12-17 04:36:17,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158709 to 156331. [2021-12-17 04:36:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156331 states, 156330 states have (on average 1.1053156783726732) internal successors, (172794), 156330 states have internal predecessors, (172794), 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 04:36:17,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156331 states to 156331 states and 172794 transitions. [2021-12-17 04:36:17,563 INFO L78 Accepts]: Start accepts. Automaton has 156331 states and 172794 transitions. Word has length 433 [2021-12-17 04:36:17,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:36:17,564 INFO L470 AbstractCegarLoop]: Abstraction has 156331 states and 172794 transitions. [2021-12-17 04:36:17,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 04:36:17,564 INFO L276 IsEmpty]: Start isEmpty. Operand 156331 states and 172794 transitions. [2021-12-17 04:36:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2021-12-17 04:36:17,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:36:17,579 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:36:17,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 04:36:17,579 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:36:17,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:36:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1868459917, now seen corresponding path program 1 times [2021-12-17 04:36:17,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:36:17,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743410560] [2021-12-17 04:36:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:17,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:36:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 314 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 04:36:18,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743410560] [2021-12-17 04:36:18,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743410560] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:36:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370195032] [2021-12-17 04:36:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:18,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:36:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:36:18,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 04:36:18,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 04:36:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:18,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 04:36:18,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:36:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-12-17 04:36:18,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 04:36:18,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370195032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:18,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 04:36:18,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-12-17 04:36:18,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161008086] [2021-12-17 04:36:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:18,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:36:18,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:36:18,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 04:36:18,639 INFO L87 Difference]: Start difference. First operand 156331 states and 172794 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 04:36:21,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:21,705 INFO L93 Difference]: Finished difference Result 311880 states and 344809 transitions. [2021-12-17 04:36:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:36:21,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 455 [2021-12-17 04:36:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:21,909 INFO L225 Difference]: With dead ends: 311880 [2021-12-17 04:36:21,910 INFO L226 Difference]: Without dead ends: 156338 [2021-12-17 04:36:21,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 04:36:21,994 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 1001 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:21,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 1517 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 04:36:22,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156338 states. [2021-12-17 04:36:23,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156338 to 153962. [2021-12-17 04:36:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153962 states, 153961 states have (on average 1.0886328355882333) internal successors, (167607), 153961 states have internal predecessors, (167607), 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 04:36:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153962 states to 153962 states and 167607 transitions. [2021-12-17 04:36:23,954 INFO L78 Accepts]: Start accepts. Automaton has 153962 states and 167607 transitions. Word has length 455 [2021-12-17 04:36:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:36:23,954 INFO L470 AbstractCegarLoop]: Abstraction has 153962 states and 167607 transitions. [2021-12-17 04:36:23,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 04:36:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 153962 states and 167607 transitions. [2021-12-17 04:36:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-12-17 04:36:23,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:36:23,966 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:36:23,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 04:36:24,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 04:36:24,179 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:36:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:36:24,181 INFO L85 PathProgramCache]: Analyzing trace with hash 826766630, now seen corresponding path program 1 times [2021-12-17 04:36:24,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:36:24,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596329236] [2021-12-17 04:36:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:24,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:36:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-12-17 04:36:24,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:24,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596329236] [2021-12-17 04:36:24,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596329236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:24,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:36:24,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:36:24,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718201103] [2021-12-17 04:36:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:24,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:36:24,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:36:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:36:24,319 INFO L87 Difference]: Start difference. First operand 153962 states and 167607 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 04:36:28,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:28,111 INFO L93 Difference]: Finished difference Result 336262 states and 368034 transitions. [2021-12-17 04:36:28,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:36:28,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 479 [2021-12-17 04:36:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:28,349 INFO L225 Difference]: With dead ends: 336262 [2021-12-17 04:36:28,349 INFO L226 Difference]: Without dead ends: 183089 [2021-12-17 04:36:28,439 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 04:36:28,439 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 924 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:28,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 786 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [817 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:36:28,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183089 states. [2021-12-17 04:36:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183089 to 183069. [2021-12-17 04:36:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183069 states, 183068 states have (on average 1.0858041820525706) internal successors, (198776), 183068 states have internal predecessors, (198776), 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 04:36:30,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183069 states to 183069 states and 198776 transitions. [2021-12-17 04:36:30,984 INFO L78 Accepts]: Start accepts. Automaton has 183069 states and 198776 transitions. Word has length 479 [2021-12-17 04:36:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:36:30,984 INFO L470 AbstractCegarLoop]: Abstraction has 183069 states and 198776 transitions. [2021-12-17 04:36:30,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 04:36:30,984 INFO L276 IsEmpty]: Start isEmpty. Operand 183069 states and 198776 transitions. [2021-12-17 04:36:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2021-12-17 04:36:30,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:36:30,997 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:36:30,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 04:36:30,997 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:36:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:36:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash -14888204, now seen corresponding path program 1 times [2021-12-17 04:36:30,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:36:30,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435428404] [2021-12-17 04:36:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:30,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:36:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-17 04:36:31,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:31,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435428404] [2021-12-17 04:36:31,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435428404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:31,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:36:31,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:36:31,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842945405] [2021-12-17 04:36:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:31,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:36:31,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:36:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:36:31,120 INFO L87 Difference]: Start difference. First operand 183069 states and 198776 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 04:36:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:34,713 INFO L93 Difference]: Finished difference Result 364567 states and 395958 transitions. [2021-12-17 04:36:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:36:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 496 [2021-12-17 04:36:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:34,947 INFO L225 Difference]: With dead ends: 364567 [2021-12-17 04:36:34,947 INFO L226 Difference]: Without dead ends: 182287 [2021-12-17 04:36:35,037 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 04:36:35,039 INFO L933 BasicCegarLoop]: 1719 mSDtfsCounter, 743 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:35,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 1867 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-17 04:36:35,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182287 states. [2021-12-17 04:36:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182287 to 181490. [2021-12-17 04:36:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181490 states, 181489 states have (on average 1.0693320256324075) internal successors, (194072), 181489 states have internal predecessors, (194072), 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 04:36:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181490 states to 181490 states and 194072 transitions. [2021-12-17 04:36:37,213 INFO L78 Accepts]: Start accepts. Automaton has 181490 states and 194072 transitions. Word has length 496 [2021-12-17 04:36:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:36:37,213 INFO L470 AbstractCegarLoop]: Abstraction has 181490 states and 194072 transitions. [2021-12-17 04:36:37,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 04:36:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 181490 states and 194072 transitions. [2021-12-17 04:36:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-12-17 04:36:37,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:36:37,225 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-17 04:36:37,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 04:36:37,225 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:36:37,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:36:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash -632232635, now seen corresponding path program 1 times [2021-12-17 04:36:37,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:36:37,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458553492] [2021-12-17 04:36:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:37,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:36:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:37,766 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-12-17 04:36:37,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:37,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458553492] [2021-12-17 04:36:37,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458553492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:37,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:36:37,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:36:37,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739740595] [2021-12-17 04:36:37,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:37,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:36:37,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:36:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:36:37,770 INFO L87 Difference]: Start difference. First operand 181490 states and 194072 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 04:36:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:41,567 INFO L93 Difference]: Finished difference Result 354282 states and 380134 transitions. [2021-12-17 04:36:41,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:36:41,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 506 [2021-12-17 04:36:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:41,863 INFO L225 Difference]: With dead ends: 354282 [2021-12-17 04:36:41,863 INFO L226 Difference]: Without dead ends: 193264 [2021-12-17 04:36:41,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 04:36:41,996 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1185 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 3097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:41,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 383 Invalid, 3097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-17 04:36:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193264 states. [2021-12-17 04:36:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193264 to 193264. [2021-12-17 04:36:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193264 states, 193263 states have (on average 1.0654703693930032) internal successors, (205916), 193263 states have internal predecessors, (205916), 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 04:36:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193264 states to 193264 states and 205916 transitions. [2021-12-17 04:36:44,445 INFO L78 Accepts]: Start accepts. Automaton has 193264 states and 205916 transitions. Word has length 506 [2021-12-17 04:36:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:36:44,446 INFO L470 AbstractCegarLoop]: Abstraction has 193264 states and 205916 transitions. [2021-12-17 04:36:44,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 04:36:44,446 INFO L276 IsEmpty]: Start isEmpty. Operand 193264 states and 205916 transitions. [2021-12-17 04:36:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-12-17 04:36:44,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:36:44,463 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 04:36:44,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 04:36:44,463 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:36:44,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:36:44,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1589919666, now seen corresponding path program 1 times [2021-12-17 04:36:44,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:36:44,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564093849] [2021-12-17 04:36:44,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:36:44,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:36:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:36:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 426 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 04:36:44,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:36:44,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564093849] [2021-12-17 04:36:44,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564093849] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:36:44,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:36:44,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:36:44,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479013694] [2021-12-17 04:36:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:36:44,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:36:44,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:36:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:36:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:36:44,602 INFO L87 Difference]: Start difference. First operand 193264 states and 205916 transitions. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 3 states have internal predecessors, (505), 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 04:36:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:36:49,552 INFO L93 Difference]: Finished difference Result 403051 states and 429078 transitions. [2021-12-17 04:36:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:36:49,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 3 states have internal predecessors, (505), 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 541 [2021-12-17 04:36:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:36:49,861 INFO L225 Difference]: With dead ends: 403051 [2021-12-17 04:36:49,861 INFO L226 Difference]: Without dead ends: 198769 [2021-12-17 04:36:49,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:36:49,957 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 1467 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 4651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:36:49,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1467 Valid, 987 Invalid, 4651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-17 04:36:50,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198769 states.