./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem10_label50.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/Problem10_label50.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 e06ef1412a74393ad84e9e1ded9df4a85465ae72dfa72ae2b083f3676b944dcb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 04:22:55,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 04:22:55,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 04:22:55,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 04:22:55,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 04:22:55,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 04:22:55,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 04:22:55,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 04:22:55,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 04:22:55,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 04:22:55,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 04:22:55,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 04:22:55,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 04:22:55,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 04:22:55,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 04:22:55,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 04:22:55,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 04:22:55,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 04:22:55,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 04:22:55,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 04:22:55,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 04:22:55,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 04:22:55,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 04:22:55,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 04:22:55,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 04:22:55,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 04:22:55,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 04:22:55,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 04:22:55,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 04:22:55,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 04:22:55,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 04:22:55,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 04:22:55,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 04:22:55,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 04:22:55,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 04:22:55,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 04:22:55,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 04:22:55,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 04:22:55,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 04:22:55,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 04:22:55,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 04:22:55,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 04:22:55,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 04:22:55,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 04:22:55,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 04:22:55,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 04:22:55,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 04:22:55,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 04:22:55,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 04:22:55,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 04:22:55,551 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 04:22:55,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 04:22:55,552 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 04:22:55,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 04:22:55,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 04:22:55,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 04:22:55,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 04:22:55,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 04:22:55,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 04:22:55,553 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 04:22:55,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 04:22:55,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 04:22:55,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 04:22:55,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 04:22:55,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 04:22:55,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 04:22:55,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:22:55,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 04:22:55,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 04:22:55,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 04:22:55,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 04:22:55,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 04:22:55,556 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 04:22:55,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 04:22:55,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 04:22:55,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 04:22:55,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e06ef1412a74393ad84e9e1ded9df4a85465ae72dfa72ae2b083f3676b944dcb [2021-12-17 04:22:55,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 04:22:55,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 04:22:55,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 04:22:55,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 04:22:55,795 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 04:22:55,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem10_label50.c [2021-12-17 04:22:55,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a8a6f08/8ad8e61adaaf4c3a94affa800e55b3ee/FLAGc3f7bb3cb [2021-12-17 04:22:56,311 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 04:22:56,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem10_label50.c [2021-12-17 04:22:56,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a8a6f08/8ad8e61adaaf4c3a94affa800e55b3ee/FLAGc3f7bb3cb [2021-12-17 04:22:56,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a8a6f08/8ad8e61adaaf4c3a94affa800e55b3ee [2021-12-17 04:22:56,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 04:22:56,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 04:22:56,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 04:22:56,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 04:22:56,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 04:22:56,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5ce73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56, skipping insertion in model container [2021-12-17 04:22:56,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 04:22:56,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 04:22:56,601 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/Problem10_label50.c[1307,1320] [2021-12-17 04:22:56,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:22:56,732 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 04:22:56,741 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/Problem10_label50.c[1307,1320] [2021-12-17 04:22:56,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 04:22:56,814 INFO L208 MainTranslator]: Completed translation [2021-12-17 04:22:56,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56 WrapperNode [2021-12-17 04:22:56,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 04:22:56,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 04:22:56,816 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 04:22:56,816 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 04:22:56,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,906 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 597 [2021-12-17 04:22:56,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 04:22:56,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 04:22:56,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 04:22:56,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 04:22:56,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:56,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 04:22:56,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 04:22:56,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 04:22:56,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 04:22:57,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (1/1) ... [2021-12-17 04:22:57,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 04:22:57,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:22:57,039 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 04:22:57,045 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 04:22:57,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 04:22:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 04:22:57,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 04:22:57,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 04:22:57,112 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 04:22:57,113 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 04:22:57,968 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 04:22:57,980 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 04:22:57,980 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 04:22:57,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:22:57 BoogieIcfgContainer [2021-12-17 04:22:57,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 04:22:57,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 04:22:57,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 04:22:57,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 04:22:57,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:22:56" (1/3) ... [2021-12-17 04:22:57,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c004c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:22:57, skipping insertion in model container [2021-12-17 04:22:57,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:56" (2/3) ... [2021-12-17 04:22:57,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c004c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:22:57, skipping insertion in model container [2021-12-17 04:22:57,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:22:57" (3/3) ... [2021-12-17 04:22:57,999 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label50.c [2021-12-17 04:22:58,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 04:22:58,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 04:22:58,038 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 04:22:58,043 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 04:22:58,043 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 04:22:58,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 04:22:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-17 04:22:58,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:22:58,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:22:58,097 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:22:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:22:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash 647015545, now seen corresponding path program 1 times [2021-12-17 04:22:58,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:22:58,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793236005] [2021-12-17 04:22:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:22:58,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:22:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:22:58,277 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 04:22:58,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:22:58,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793236005] [2021-12-17 04:22:58,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793236005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:22:58,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:22:58,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:22:58,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221006237] [2021-12-17 04:22:58,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:22:58,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:22:58,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:22:58,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:22:58,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:22:58,353 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.6862745098039216) internal successors, (344), 205 states have internal predecessors, (344), 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 04:22:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:22:59,028 INFO L93 Difference]: Finished difference Result 552 states and 966 transitions. [2021-12-17 04:22:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:22:59,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-17 04:22:59,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:22:59,047 INFO L225 Difference]: With dead ends: 552 [2021-12-17 04:22:59,048 INFO L226 Difference]: Without dead ends: 282 [2021-12-17 04:22:59,055 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 04:22:59,060 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 179 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:22:59,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 76 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 04:22:59,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-17 04:22:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-12-17 04:22:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 1.5373665480427046) internal successors, (432), 281 states have internal predecessors, (432), 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 04:22:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 432 transitions. [2021-12-17 04:22:59,108 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 432 transitions. Word has length 9 [2021-12-17 04:22:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:22:59,109 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 432 transitions. [2021-12-17 04:22:59,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 04:22:59,109 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 432 transitions. [2021-12-17 04:22:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-17 04:22:59,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:22:59,111 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 04:22:59,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 04:22:59,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:22:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:22:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1553241361, now seen corresponding path program 1 times [2021-12-17 04:22:59,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:22:59,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954705629] [2021-12-17 04:22:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:22:59,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:22:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:22:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:22:59,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:22:59,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954705629] [2021-12-17 04:22:59,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954705629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:22:59,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:22:59,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:22:59,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963891101] [2021-12-17 04:22:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:22:59,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:22:59,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:22:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:22:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:22:59,248 INFO L87 Difference]: Start difference. First operand 282 states and 432 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 04:22:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:22:59,652 INFO L93 Difference]: Finished difference Result 701 states and 1076 transitions. [2021-12-17 04:22:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:22:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 78 [2021-12-17 04:22:59,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:22:59,655 INFO L225 Difference]: With dead ends: 701 [2021-12-17 04:22:59,655 INFO L226 Difference]: Without dead ends: 421 [2021-12-17 04:22:59,656 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 04:22:59,657 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 73 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:22:59,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 52 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:22:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-12-17 04:22:59,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-12-17 04:22:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.4428571428571428) internal successors, (606), 420 states have internal predecessors, (606), 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 04:22:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 606 transitions. [2021-12-17 04:22:59,672 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 606 transitions. Word has length 78 [2021-12-17 04:22:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:22:59,673 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 606 transitions. [2021-12-17 04:22:59,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 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 04:22:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 606 transitions. [2021-12-17 04:22:59,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-17 04:22:59,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:22:59,675 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 04:22:59,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 04:22:59,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:22:59,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:22:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash 422285312, now seen corresponding path program 1 times [2021-12-17 04:22:59,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:22:59,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471191042] [2021-12-17 04:22:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:22:59,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:22:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:22:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:22:59,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:22:59,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471191042] [2021-12-17 04:22:59,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471191042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:22:59,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:22:59,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:22:59,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913157274] [2021-12-17 04:22:59,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:22:59,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:22:59,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:22:59,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:22:59,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:22:59,739 INFO L87 Difference]: Start difference. First operand 421 states and 606 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 04:23:00,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:00,208 INFO L93 Difference]: Finished difference Result 1118 states and 1639 transitions. [2021-12-17 04:23:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:00,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-12-17 04:23:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:00,211 INFO L225 Difference]: With dead ends: 1118 [2021-12-17 04:23:00,211 INFO L226 Difference]: Without dead ends: 838 [2021-12-17 04:23:00,211 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 04:23:00,212 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 133 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:00,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 226 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:23:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-12-17 04:23:00,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 699. [2021-12-17 04:23:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.330945558739255) internal successors, (929), 698 states have internal predecessors, (929), 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 04:23:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 929 transitions. [2021-12-17 04:23:00,233 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 929 transitions. Word has length 84 [2021-12-17 04:23:00,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:00,247 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 929 transitions. [2021-12-17 04:23:00,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 04:23:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 929 transitions. [2021-12-17 04:23:00,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 04:23:00,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:00,250 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 04:23:00,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 04:23:00,250 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:00,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:00,251 INFO L85 PathProgramCache]: Analyzing trace with hash 550866738, now seen corresponding path program 1 times [2021-12-17 04:23:00,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:00,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932496031] [2021-12-17 04:23:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:00,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:23:00,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:00,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932496031] [2021-12-17 04:23:00,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932496031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:00,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:00,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:00,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144038111] [2021-12-17 04:23:00,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:00,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:23:00,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:00,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:23:00,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:23:00,400 INFO L87 Difference]: Start difference. First operand 699 states and 929 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 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 04:23:00,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:00,844 INFO L93 Difference]: Finished difference Result 1129 states and 1544 transitions. [2021-12-17 04:23:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 04:23:00,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2021-12-17 04:23:00,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:00,847 INFO L225 Difference]: With dead ends: 1129 [2021-12-17 04:23:00,848 INFO L226 Difference]: Without dead ends: 571 [2021-12-17 04:23:00,849 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 04:23:00,850 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 114 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:00,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 92 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:23:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-12-17 04:23:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 560. [2021-12-17 04:23:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 1.3416815742397137) internal successors, (750), 559 states have internal predecessors, (750), 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 04:23:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 750 transitions. [2021-12-17 04:23:00,862 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 750 transitions. Word has length 103 [2021-12-17 04:23:00,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:00,863 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 750 transitions. [2021-12-17 04:23:00,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 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 04:23:00,863 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 750 transitions. [2021-12-17 04:23:00,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-17 04:23:00,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:00,866 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 04:23:00,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 04:23:00,866 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 2132078718, now seen corresponding path program 1 times [2021-12-17 04:23:00,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:00,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260663836] [2021-12-17 04:23:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:00,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-17 04:23:00,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:00,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260663836] [2021-12-17 04:23:00,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260663836] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:00,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:00,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 04:23:00,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688163161] [2021-12-17 04:23:00,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:00,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:23:00,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:23:00,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:23:00,950 INFO L87 Difference]: Start difference. First operand 560 states and 750 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:23:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:01,296 INFO L93 Difference]: Finished difference Result 1257 states and 1742 transitions. [2021-12-17 04:23:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:01,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-12-17 04:23:01,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:01,300 INFO L225 Difference]: With dead ends: 1257 [2021-12-17 04:23:01,300 INFO L226 Difference]: Without dead ends: 838 [2021-12-17 04:23:01,301 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 04:23:01,301 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 107 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:01,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 34 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:23:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-12-17 04:23:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2021-12-17 04:23:01,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.2759856630824373) internal successors, (1068), 837 states have internal predecessors, (1068), 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 04:23:01,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1068 transitions. [2021-12-17 04:23:01,313 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1068 transitions. Word has length 144 [2021-12-17 04:23:01,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:01,314 INFO L470 AbstractCegarLoop]: Abstraction has 838 states and 1068 transitions. [2021-12-17 04:23:01,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 04:23:01,314 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1068 transitions. [2021-12-17 04:23:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-17 04:23:01,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:01,315 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-17 04:23:01,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 04:23:01,316 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash -627353775, now seen corresponding path program 1 times [2021-12-17 04:23:01,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:01,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161680493] [2021-12-17 04:23:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:01,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:23:01,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:01,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161680493] [2021-12-17 04:23:01,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161680493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:01,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:01,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:01,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8811221] [2021-12-17 04:23:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:01,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:23:01,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:01,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:23:01,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:23:01,388 INFO L87 Difference]: Start difference. First operand 838 states and 1068 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 04:23:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:01,736 INFO L93 Difference]: Finished difference Result 1813 states and 2369 transitions. [2021-12-17 04:23:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:01,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2021-12-17 04:23:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:01,751 INFO L225 Difference]: With dead ends: 1813 [2021-12-17 04:23:01,752 INFO L226 Difference]: Without dead ends: 1116 [2021-12-17 04:23:01,753 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 04:23:01,753 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 59 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:01,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 214 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:23:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-17 04:23:01,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1116. [2021-12-17 04:23:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1115 states have (on average 1.2260089686098654) internal successors, (1367), 1115 states have internal predecessors, (1367), 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 04:23:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1367 transitions. [2021-12-17 04:23:01,774 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1367 transitions. Word has length 161 [2021-12-17 04:23:01,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:01,774 INFO L470 AbstractCegarLoop]: Abstraction has 1116 states and 1367 transitions. [2021-12-17 04:23:01,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 04:23:01,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1367 transitions. [2021-12-17 04:23:01,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-17 04:23:01,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:01,776 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 04:23:01,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 04:23:01,777 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash -271102904, now seen corresponding path program 1 times [2021-12-17 04:23:01,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:01,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184543098] [2021-12-17 04:23:01,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:01,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-17 04:23:01,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:01,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184543098] [2021-12-17 04:23:01,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184543098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:01,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:01,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:01,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547293852] [2021-12-17 04:23:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:01,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:23:01,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:23:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:23:01,848 INFO L87 Difference]: Start difference. First operand 1116 states and 1367 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 04:23:02,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:02,212 INFO L93 Difference]: Finished difference Result 2369 states and 2967 transitions. [2021-12-17 04:23:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:02,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 183 [2021-12-17 04:23:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:02,216 INFO L225 Difference]: With dead ends: 2369 [2021-12-17 04:23:02,216 INFO L226 Difference]: Without dead ends: 1394 [2021-12-17 04:23:02,217 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 04:23:02,218 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 138 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:02,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 77 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:23:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2021-12-17 04:23:02,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1255. [2021-12-17 04:23:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.1650717703349283) internal successors, (1461), 1254 states have internal predecessors, (1461), 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 04:23:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1461 transitions. [2021-12-17 04:23:02,235 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1461 transitions. Word has length 183 [2021-12-17 04:23:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:02,235 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1461 transitions. [2021-12-17 04:23:02,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 04:23:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1461 transitions. [2021-12-17 04:23:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-17 04:23:02,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:02,238 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:23:02,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 04:23:02,238 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1086428008, now seen corresponding path program 1 times [2021-12-17 04:23:02,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:02,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642270467] [2021-12-17 04:23:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:02,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:23:02,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:02,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642270467] [2021-12-17 04:23:02,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642270467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:02,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:02,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 04:23:02,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191494815] [2021-12-17 04:23:02,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:02,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 04:23:02,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 04:23:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:23:02,398 INFO L87 Difference]: Start difference. First operand 1255 states and 1461 transitions. Second operand has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 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 04:23:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:02,834 INFO L93 Difference]: Finished difference Result 2424 states and 2831 transitions. [2021-12-17 04:23:02,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 04:23:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 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 216 [2021-12-17 04:23:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:02,838 INFO L225 Difference]: With dead ends: 2424 [2021-12-17 04:23:02,838 INFO L226 Difference]: Without dead ends: 1255 [2021-12-17 04:23:02,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 04:23:02,841 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 198 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:02,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 30 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 04:23:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-12-17 04:23:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2021-12-17 04:23:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.161084529505582) internal successors, (1456), 1254 states have internal predecessors, (1456), 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 04:23:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1456 transitions. [2021-12-17 04:23:02,862 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1456 transitions. Word has length 216 [2021-12-17 04:23:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:02,865 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1456 transitions. [2021-12-17 04:23:02,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.857142857142858) internal successors, (216), 6 states have internal predecessors, (216), 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 04:23:02,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1456 transitions. [2021-12-17 04:23:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-12-17 04:23:02,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:02,868 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:23:02,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 04:23:02,872 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2104357582, now seen corresponding path program 1 times [2021-12-17 04:23:02,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:02,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307789807] [2021-12-17 04:23:02,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:02,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:23:02,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:02,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307789807] [2021-12-17 04:23:02,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307789807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:02,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:02,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:02,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724511997] [2021-12-17 04:23:02,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:02,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:23:03,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:03,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:23:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:23:03,001 INFO L87 Difference]: Start difference. First operand 1255 states and 1456 transitions. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 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 04:23:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:03,660 INFO L93 Difference]: Finished difference Result 4178 states and 4923 transitions. [2021-12-17 04:23:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:23:03,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 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 252 [2021-12-17 04:23:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:03,669 INFO L225 Difference]: With dead ends: 4178 [2021-12-17 04:23:03,669 INFO L226 Difference]: Without dead ends: 3064 [2021-12-17 04:23:03,671 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 04:23:03,672 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 55 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:03,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 55 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 04:23:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2021-12-17 04:23:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2784. [2021-12-17 04:23:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2783 states have (on average 1.15199425080848) internal successors, (3206), 2783 states have internal predecessors, (3206), 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 04:23:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3206 transitions. [2021-12-17 04:23:03,713 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3206 transitions. Word has length 252 [2021-12-17 04:23:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:03,713 INFO L470 AbstractCegarLoop]: Abstraction has 2784 states and 3206 transitions. [2021-12-17 04:23:03,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 3 states have internal predecessors, (252), 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 04:23:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3206 transitions. [2021-12-17 04:23:03,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-17 04:23:03,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:03,717 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-17 04:23:03,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 04:23:03,717 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:03,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash 171228312, now seen corresponding path program 1 times [2021-12-17 04:23:03,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:03,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846844024] [2021-12-17 04:23:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:03,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 04:23:03,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:03,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846844024] [2021-12-17 04:23:03,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846844024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:03,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:03,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 04:23:03,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100899862] [2021-12-17 04:23:03,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:03,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 04:23:03,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 04:23:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-17 04:23:03,808 INFO L87 Difference]: Start difference. First operand 2784 states and 3206 transitions. Second operand has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 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 04:23:04,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:04,322 INFO L93 Difference]: Finished difference Result 5705 states and 6595 transitions. [2021-12-17 04:23:04,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 04:23:04,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 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 04:23:04,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:04,331 INFO L225 Difference]: With dead ends: 5705 [2021-12-17 04:23:04,332 INFO L226 Difference]: Without dead ends: 3062 [2021-12-17 04:23:04,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 04:23:04,336 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 235 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:04,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 198 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 04:23:04,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2021-12-17 04:23:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2089. [2021-12-17 04:23:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 2088 states have (on average 1.1336206896551724) internal successors, (2367), 2088 states have internal predecessors, (2367), 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 04:23:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 2367 transitions. [2021-12-17 04:23:04,379 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 2367 transitions. Word has length 257 [2021-12-17 04:23:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:04,380 INFO L470 AbstractCegarLoop]: Abstraction has 2089 states and 2367 transitions. [2021-12-17 04:23:04,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.25) internal successors, (257), 4 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 04:23:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 2367 transitions. [2021-12-17 04:23:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-17 04:23:04,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:04,384 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:23:04,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 04:23:04,384 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2099230470, now seen corresponding path program 1 times [2021-12-17 04:23:04,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369390101] [2021-12-17 04:23:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:04,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-17 04:23:04,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:04,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369390101] [2021-12-17 04:23:04,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369390101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:04,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:04,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:04,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161453828] [2021-12-17 04:23:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:04,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:23:04,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:23:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:23:04,462 INFO L87 Difference]: Start difference. First operand 2089 states and 2367 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 04:23:04,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:04,813 INFO L93 Difference]: Finished difference Result 4454 states and 5130 transitions. [2021-12-17 04:23:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:04,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 04:23:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:04,820 INFO L225 Difference]: With dead ends: 4454 [2021-12-17 04:23:04,821 INFO L226 Difference]: Without dead ends: 2506 [2021-12-17 04:23:04,822 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 04:23:04,823 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 133 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:04,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 225 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:23:04,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-12-17 04:23:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2228. [2021-12-17 04:23:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 1.1248316120341266) internal successors, (2505), 2227 states have internal predecessors, (2505), 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 04:23:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2505 transitions. [2021-12-17 04:23:04,854 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2505 transitions. Word has length 257 [2021-12-17 04:23:04,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:04,854 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 2505 transitions. [2021-12-17 04:23:04,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 04:23:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2505 transitions. [2021-12-17 04:23:04,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-12-17 04:23:04,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:04,859 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-17 04:23:04,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 04:23:04,860 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:04,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1814419780, now seen corresponding path program 1 times [2021-12-17 04:23:04,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:04,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754649933] [2021-12-17 04:23:04,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:04,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-17 04:23:04,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:04,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754649933] [2021-12-17 04:23:04,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754649933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:04,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:04,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:04,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180340628] [2021-12-17 04:23:04,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:04,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:23:04,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:23:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:23:04,955 INFO L87 Difference]: Start difference. First operand 2228 states and 2505 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 04:23:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:05,323 INFO L93 Difference]: Finished difference Result 5288 states and 5982 transitions. [2021-12-17 04:23:05,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:05,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 270 [2021-12-17 04:23:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:05,332 INFO L225 Difference]: With dead ends: 5288 [2021-12-17 04:23:05,332 INFO L226 Difference]: Without dead ends: 3201 [2021-12-17 04:23:05,335 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 04:23:05,335 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 135 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:05,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 51 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:23:05,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3201 states. [2021-12-17 04:23:05,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3201 to 2645. [2021-12-17 04:23:05,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 1.1161119515885023) internal successors, (2951), 2644 states have internal predecessors, (2951), 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 04:23:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 2951 transitions. [2021-12-17 04:23:05,381 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 2951 transitions. Word has length 270 [2021-12-17 04:23:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:05,382 INFO L470 AbstractCegarLoop]: Abstraction has 2645 states and 2951 transitions. [2021-12-17 04:23:05,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 04:23:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 2951 transitions. [2021-12-17 04:23:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-17 04:23:05,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:05,388 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-12-17 04:23:05,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 04:23:05,388 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:05,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:05,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1670901537, now seen corresponding path program 1 times [2021-12-17 04:23:05,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:05,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2461010] [2021-12-17 04:23:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:05,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:05,488 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-17 04:23:05,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:05,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2461010] [2021-12-17 04:23:05,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2461010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:05,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:05,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:05,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989276136] [2021-12-17 04:23:05,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:05,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:23:05,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:05,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:23:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:23:05,490 INFO L87 Difference]: Start difference. First operand 2645 states and 2951 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 04:23:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:05,811 INFO L93 Difference]: Finished difference Result 5983 states and 6674 transitions. [2021-12-17 04:23:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:05,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 306 [2021-12-17 04:23:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:05,827 INFO L225 Difference]: With dead ends: 5983 [2021-12-17 04:23:05,827 INFO L226 Difference]: Without dead ends: 2506 [2021-12-17 04:23:05,830 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 04:23:05,831 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 133 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:05,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 225 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:23:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2021-12-17 04:23:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2506. [2021-12-17 04:23:05,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 1.111377245508982) internal successors, (2784), 2505 states have internal predecessors, (2784), 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 04:23:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 2784 transitions. [2021-12-17 04:23:05,862 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 2784 transitions. Word has length 306 [2021-12-17 04:23:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:05,863 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 2784 transitions. [2021-12-17 04:23:05,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 04:23:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 2784 transitions. [2021-12-17 04:23:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-12-17 04:23:05,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:05,867 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 04:23:05,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 04:23:05,868 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash 179712783, now seen corresponding path program 1 times [2021-12-17 04:23:05,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:05,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565461377] [2021-12-17 04:23:05,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:05,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-17 04:23:05,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565461377] [2021-12-17 04:23:05,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565461377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 04:23:05,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 04:23:05,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 04:23:05,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552204534] [2021-12-17 04:23:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 04:23:05,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 04:23:05,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 04:23:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 04:23:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 04:23:05,944 INFO L87 Difference]: Start difference. First operand 2506 states and 2784 transitions. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 04:23:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 04:23:06,255 INFO L93 Difference]: Finished difference Result 4732 states and 5276 transitions. [2021-12-17 04:23:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 04:23:06,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 350 [2021-12-17 04:23:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 04:23:06,260 INFO L225 Difference]: With dead ends: 4732 [2021-12-17 04:23:06,260 INFO L226 Difference]: Without dead ends: 2367 [2021-12-17 04:23:06,262 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 04:23:06,263 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 04:23:06,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 210 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 04:23:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-12-17 04:23:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2367. [2021-12-17 04:23:06,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 2366 states have (on average 1.084530853761623) internal successors, (2566), 2366 states have internal predecessors, (2566), 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 04:23:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 2566 transitions. [2021-12-17 04:23:06,289 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 2566 transitions. Word has length 350 [2021-12-17 04:23:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 04:23:06,290 INFO L470 AbstractCegarLoop]: Abstraction has 2367 states and 2566 transitions. [2021-12-17 04:23:06,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 04:23:06,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 2566 transitions. [2021-12-17 04:23:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-12-17 04:23:06,294 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 04:23:06,295 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-17 04:23:06,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 04:23:06,295 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 04:23:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 04:23:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1230177848, now seen corresponding path program 1 times [2021-12-17 04:23:06,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 04:23:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905862539] [2021-12-17 04:23:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:06,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 04:23:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 217 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-17 04:23:06,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 04:23:06,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905862539] [2021-12-17 04:23:06,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905862539] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 04:23:06,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746742219] [2021-12-17 04:23:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 04:23:06,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 04:23:06,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 04:23:06,435 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 04:23:06,438 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 04:23:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 04:23:06,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-17 04:23:06,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 04:23:24,595 WARN L227 SmtUtils]: Spent 5.10s on a formula simplification that was a NOOP. DAG size: 20 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:25:04,857 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 20 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:26:56,609 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 20 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:28:09,762 WARN L227 SmtUtils]: Spent 5.18s on a formula simplification. DAG size of input: 16 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:30:11,425 WARN L227 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 16 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:32:09,872 WARN L227 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 12 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:34:13,936 WARN L227 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 12 DAG size of output: 1 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:34:29,243 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((aux_div_v_~a1~0_341_34 Int) (aux_mod_v_~a1~0_341_34 Int)) (and (<= 0 aux_mod_v_~a1~0_341_34) (let ((.cse2 (mod (div (+ (* aux_div_v_~a1~0_341_34 45) (* aux_mod_v_~a1~0_341_34 9) 4661901) 10) 299993))) (let ((.cse0 (div (+ .cse2 (- 300005)) 5))) (let ((.cse1 (<= (+ c_~a1~0 75818) .cse0))) (or (<= (+ c_~a1~0 75819) .cse0) (and .cse1 (not (= 0 (mod .cse2 5)))) (and .cse1 (= 0 (mod (+ .cse2 2) 5))))))) (< aux_mod_v_~a1~0_341_34 5) (<= 23 aux_div_v_~a1~0_341_34))) (= c_~a19~0 9) (= c_~a4~0 14) (= c_~a12~0 0) (= c_~a10~0 4)) is different from false [2021-12-17 04:34:34,536 WARN L227 SmtUtils]: Spent 5.20s on a formula simplification that was a NOOP. DAG size: 20 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:35:34,514 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 20 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:36:16,631 WARN L227 SmtUtils]: Spent 5.00s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 04:36:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 102 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-17 04:36:45,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 04:37:04,655 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 9 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15