./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.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 54f1be55645106b43145d214f59b6f833268ce7c7f84e399c536bf03a2c9679b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:13:21,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:13:21,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:13:21,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:13:21,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:13:21,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:13:21,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:13:21,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:13:21,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:13:21,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:13:21,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:13:21,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:13:21,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:13:21,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:13:21,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:13:21,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:13:21,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:13:21,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:13:21,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:13:21,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:13:21,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:13:21,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:13:21,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:13:21,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:13:21,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:13:21,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:13:21,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:13:21,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:13:21,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:13:21,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:13:21,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:13:21,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:13:21,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:13:21,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:13:21,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:13:21,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:13:21,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:13:21,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:13:21,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:13:21,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:13:21,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:13:21,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:13:21,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:13:21,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:13:21,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:13:21,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:13:21,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:13:21,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:13:21,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:13:21,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:13:21,461 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:13:21,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:13:21,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:13:21,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:13:21,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:13:21,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:13:21,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:13:21,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:13:21,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:13:21,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:13:21,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:13:21,464 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:13:21,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:13:21,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:13:21,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:13:21,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:13:21,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:13:21,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:13:21,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:13:21,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:13:21,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:13:21,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:13:21,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:13:21,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:13:21,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:13:21,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:13:21,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54f1be55645106b43145d214f59b6f833268ce7c7f84e399c536bf03a2c9679b [2021-12-21 14:13:21,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:13:21,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:13:21,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:13:21,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:13:21,693 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:13:21,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c [2021-12-21 14:13:21,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f81787e32/1ef965d96ebb445293213a445d23b314/FLAG4ddf99e4c [2021-12-21 14:13:22,398 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:13:22,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c [2021-12-21 14:13:22,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f81787e32/1ef965d96ebb445293213a445d23b314/FLAG4ddf99e4c [2021-12-21 14:13:22,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f81787e32/1ef965d96ebb445293213a445d23b314 [2021-12-21 14:13:22,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:13:22,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:13:22,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:13:22,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:13:22,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:13:22,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:13:22" (1/1) ... [2021-12-21 14:13:22,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3204deed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:22, skipping insertion in model container [2021-12-21 14:13:22,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:13:22" (1/1) ... [2021-12-21 14:13:22,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:13:22,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:13:24,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[381679,381692] [2021-12-21 14:13:24,081 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[383339,383352] [2021-12-21 14:13:24,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:13:24,252 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:13:24,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[381679,381692] [2021-12-21 14:13:24,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[383339,383352] [2021-12-21 14:13:24,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:13:24,934 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:13:24,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24 WrapperNode [2021-12-21 14:13:24,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:13:24,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:13:24,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:13:24,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:13:24,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,299 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-21 14:13:25,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:13:25,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:13:25,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:13:25,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:13:25,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:13:25,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:13:25,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:13:25,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:13:25,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (1/1) ... [2021-12-21 14:13:25,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:13:25,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:13:25,724 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) [2021-12-21 14:13:25,728 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 [2021-12-21 14:13:25,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:13:25,784 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:13:25,784 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:13:25,786 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:13:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:13:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:13:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:13:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:13:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:13:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:13:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:13:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:13:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:13:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:13:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:13:25,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:13:25,954 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:13:25,955 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:13:30,850 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:13:30,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:13:30,875 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-21 14:13:30,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:13:30 BoogieIcfgContainer [2021-12-21 14:13:30,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:13:30,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:13:30,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:13:30,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:13:30,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:13:22" (1/3) ... [2021-12-21 14:13:30,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66523063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:13:30, skipping insertion in model container [2021-12-21 14:13:30,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:13:24" (2/3) ... [2021-12-21 14:13:30,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66523063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:13:30, skipping insertion in model container [2021-12-21 14:13:30,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:13:30" (3/3) ... [2021-12-21 14:13:30,884 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.07.cil-1.c [2021-12-21 14:13:30,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:13:30,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:13:30,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:13:30,927 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 [2021-12-21 14:13:30,928 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:13:30,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-21 14:13:30,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:30,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:30,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:30,982 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:30,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-21 14:13:30,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:30,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755233341] [2021-12-21 14:13:30,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:30,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:31,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:31,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:31,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755233341] [2021-12-21 14:13:31,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755233341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:31,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:31,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:13:31,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089167793] [2021-12-21 14:13:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:31,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:13:31,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:31,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:13:31,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:13:31,398 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:32,266 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-21 14:13:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:13:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:32,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:32,286 INFO L225 Difference]: With dead ends: 4955 [2021-12-21 14:13:32,286 INFO L226 Difference]: Without dead ends: 2460 [2021-12-21 14:13:32,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:13:32,296 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:32,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 14:13:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-21 14:13:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-21 14:13:32,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-21 14:13:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-21 14:13:32,397 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-21 14:13:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:32,397 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-21 14:13:32,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-21 14:13:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:32,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:32,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:32,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:13:32,402 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:32,403 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-21 14:13:32,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:32,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285158079] [2021-12-21 14:13:32,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:32,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:32,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:32,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:32,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285158079] [2021-12-21 14:13:32,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285158079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:32,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:32,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:13:32,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412641940] [2021-12-21 14:13:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:32,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:13:32,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:32,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:13:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:13:32,569 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:33,992 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-21 14:13:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:13:33,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:34,002 INFO L225 Difference]: With dead ends: 3029 [2021-12-21 14:13:34,002 INFO L226 Difference]: Without dead ends: 2792 [2021-12-21 14:13:34,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:13:34,005 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:34,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:13:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-21 14:13:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-21 14:13:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-21 14:13:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-21 14:13:34,063 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-21 14:13:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:34,063 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-21 14:13:34,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-21 14:13:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:34,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:34,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:34,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:13:34,066 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-21 14:13:34,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:34,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392557995] [2021-12-21 14:13:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:34,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:34,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:34,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:34,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:34,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:34,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392557995] [2021-12-21 14:13:34,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392557995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:34,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:34,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:34,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275146064] [2021-12-21 14:13:34,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:34,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:34,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:34,202 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:35,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:35,966 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2021-12-21 14:13:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:35,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:35,978 INFO L225 Difference]: With dead ends: 3617 [2021-12-21 14:13:35,978 INFO L226 Difference]: Without dead ends: 3134 [2021-12-21 14:13:35,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:35,981 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21723 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:35,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 21723 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:13:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-12-21 14:13:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2021-12-21 14:13:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-21 14:13:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2021-12-21 14:13:36,123 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2021-12-21 14:13:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:36,124 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2021-12-21 14:13:36,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2021-12-21 14:13:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:36,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:36,126 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:36,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:13:36,126 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:36,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:36,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-21 14:13:36,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504857474] [2021-12-21 14:13:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:36,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:36,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:36,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504857474] [2021-12-21 14:13:36,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504857474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:36,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:36,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:36,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93526309] [2021-12-21 14:13:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:36,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:36,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:36,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:36,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:36,251 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:37,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:37,895 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2021-12-21 14:13:37,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:37,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:37,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:37,911 INFO L225 Difference]: With dead ends: 4483 [2021-12-21 14:13:37,912 INFO L226 Difference]: Without dead ends: 3771 [2021-12-21 14:13:37,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:37,924 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 21711 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:37,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 21711 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:13:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-12-21 14:13:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2021-12-21 14:13:37,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-21 14:13:38,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2021-12-21 14:13:38,009 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2021-12-21 14:13:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:38,009 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2021-12-21 14:13:38,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2021-12-21 14:13:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:38,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:38,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:38,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:13:38,011 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:38,012 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-21 14:13:38,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:38,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763518290] [2021-12-21 14:13:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:38,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:38,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:38,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:38,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:38,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763518290] [2021-12-21 14:13:38,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763518290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:38,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:38,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:38,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274104352] [2021-12-21 14:13:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:38,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:38,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:38,118 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:39,839 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2021-12-21 14:13:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:39,864 INFO L225 Difference]: With dead ends: 6150 [2021-12-21 14:13:39,865 INFO L226 Difference]: Without dead ends: 4979 [2021-12-21 14:13:39,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:39,869 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 21707 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:39,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4951 Valid, 21707 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:13:39,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-12-21 14:13:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2021-12-21 14:13:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-21 14:13:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2021-12-21 14:13:40,006 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2021-12-21 14:13:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:40,006 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2021-12-21 14:13:40,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2021-12-21 14:13:40,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:40,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:40,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:40,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:13:40,010 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:40,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:40,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-21 14:13:40,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:40,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879894414] [2021-12-21 14:13:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:40,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:40,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:40,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:40,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879894414] [2021-12-21 14:13:40,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879894414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:40,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:40,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:40,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804137502] [2021-12-21 14:13:40,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:40,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:40,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:40,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:40,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:40,119 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:41,899 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2021-12-21 14:13:41,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:41,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:41,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:41,932 INFO L225 Difference]: With dead ends: 9483 [2021-12-21 14:13:41,933 INFO L226 Difference]: Without dead ends: 7393 [2021-12-21 14:13:41,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:41,943 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21703 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:41,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21703 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:13:41,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2021-12-21 14:13:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2021-12-21 14:13:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-21 14:13:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2021-12-21 14:13:42,189 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2021-12-21 14:13:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:42,190 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2021-12-21 14:13:42,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2021-12-21 14:13:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:42,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:42,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:42,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:13:42,194 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:42,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:42,194 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-21 14:13:42,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:42,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461512967] [2021-12-21 14:13:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:42,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:42,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461512967] [2021-12-21 14:13:42,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461512967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:42,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:42,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:42,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928647115] [2021-12-21 14:13:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:42,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:42,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:42,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:42,294 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:44,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:44,263 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2021-12-21 14:13:44,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:44,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:44,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:44,305 INFO L225 Difference]: With dead ends: 16148 [2021-12-21 14:13:44,305 INFO L226 Difference]: Without dead ends: 12215 [2021-12-21 14:13:44,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:13:44,321 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21697 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:44,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21697 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:13:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2021-12-21 14:13:44,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2021-12-21 14:13:44,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-21 14:13:44,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2021-12-21 14:13:44,684 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2021-12-21 14:13:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:44,684 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2021-12-21 14:13:44,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2021-12-21 14:13:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:44,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:44,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:44,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:13:44,689 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:44,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:44,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-21 14:13:44,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:44,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833521693] [2021-12-21 14:13:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:44,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:44,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:44,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833521693] [2021-12-21 14:13:44,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833521693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:44,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:44,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:44,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515125932] [2021-12-21 14:13:44,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:44,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:44,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:44,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:44,802 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:45,999 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2021-12-21 14:13:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:13:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:46,033 INFO L225 Difference]: With dead ends: 19942 [2021-12-21 14:13:46,033 INFO L226 Difference]: Without dead ends: 12310 [2021-12-21 14:13:46,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:13:46,053 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16707 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:46,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16707 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 14:13:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2021-12-21 14:13:46,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2021-12-21 14:13:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-21 14:13:46,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2021-12-21 14:13:46,408 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2021-12-21 14:13:46,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:46,408 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2021-12-21 14:13:46,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2021-12-21 14:13:46,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:46,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:46,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:46,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:13:46,414 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-21 14:13:46,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:46,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136642928] [2021-12-21 14:13:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:46,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:46,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:46,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:46,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136642928] [2021-12-21 14:13:46,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136642928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:46,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:46,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:46,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391748560] [2021-12-21 14:13:46,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:46,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:46,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:46,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:46,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:46,496 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:49,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:49,322 INFO L93 Difference]: Finished difference Result 32836 states and 52097 transitions. [2021-12-21 14:13:49,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:13:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:49,395 INFO L225 Difference]: With dead ends: 32836 [2021-12-21 14:13:49,395 INFO L226 Difference]: Without dead ends: 25204 [2021-12-21 14:13:49,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:13:49,424 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 5211 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 21673 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:49,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5233 Valid, 21673 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:13:49,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2021-12-21 14:13:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 17165. [2021-12-21 14:13:50,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 15696 states have (on average 1.5779179408766564) internal successors, (24767), 15762 states have internal predecessors, (24767), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-21 14:13:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 27586 transitions. [2021-12-21 14:13:50,391 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 27586 transitions. Word has length 123 [2021-12-21 14:13:50,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:50,392 INFO L470 AbstractCegarLoop]: Abstraction has 17165 states and 27586 transitions. [2021-12-21 14:13:50,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 27586 transitions. [2021-12-21 14:13:50,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:50,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:50,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:50,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:13:50,402 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:50,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-21 14:13:50,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:50,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315212223] [2021-12-21 14:13:50,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:50,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:50,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:50,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315212223] [2021-12-21 14:13:50,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315212223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:50,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:50,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:50,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984754441] [2021-12-21 14:13:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:50,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:50,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:50,505 INFO L87 Difference]: Start difference. First operand 17165 states and 27586 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:54,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:54,817 INFO L93 Difference]: Finished difference Result 61867 states and 98487 transitions. [2021-12-21 14:13:54,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:13:54,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:13:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:54,977 INFO L225 Difference]: With dead ends: 61867 [2021-12-21 14:13:54,977 INFO L226 Difference]: Without dead ends: 46838 [2021-12-21 14:13:55,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:13:55,024 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 4981 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 21772 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:55,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 21772 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:13:55,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46838 states. [2021-12-21 14:13:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46838 to 31602. [2021-12-21 14:13:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31602 states, 28757 states have (on average 1.5581945265500574) internal successors, (44809), 28887 states have internal predecessors, (44809), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-21 14:13:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31602 states to 31602 states and 51006 transitions. [2021-12-21 14:13:56,785 INFO L78 Accepts]: Start accepts. Automaton has 31602 states and 51006 transitions. Word has length 123 [2021-12-21 14:13:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:56,785 INFO L470 AbstractCegarLoop]: Abstraction has 31602 states and 51006 transitions. [2021-12-21 14:13:56,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:13:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 31602 states and 51006 transitions. [2021-12-21 14:13:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:13:56,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:56,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:13:56,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:13:56,803 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:56,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:56,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-21 14:13:56,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59150417] [2021-12-21 14:13:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:56,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:13:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:13:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:13:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:13:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:13:56,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:56,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59150417] [2021-12-21 14:13:56,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59150417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:56,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:56,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:56,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147351409] [2021-12-21 14:13:56,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:56,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:56,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:56,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:56,902 INFO L87 Difference]: Start difference. First operand 31602 states and 51006 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:14:04,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:14:04,213 INFO L93 Difference]: Finished difference Result 117782 states and 189717 transitions. [2021-12-21 14:14:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:14:04,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-21 14:14:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:14:04,546 INFO L225 Difference]: With dead ends: 117782 [2021-12-21 14:14:04,547 INFO L226 Difference]: Without dead ends: 88316 [2021-12-21 14:14:04,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:14:04,633 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 5131 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5153 SdHoareTripleChecker+Valid, 21663 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:14:04,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5153 Valid, 21663 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:14:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88316 states. [2021-12-21 14:14:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88316 to 60731. [2021-12-21 14:14:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60731 states, 55198 states have (on average 1.5483713178013696) internal successors, (85467), 55456 states have internal predecessors, (85467), 3733 states have call successors, (3733), 1542 states have call predecessors, (3733), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2021-12-21 14:14:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60731 states to 60731 states and 99750 transitions. [2021-12-21 14:14:08,438 INFO L78 Accepts]: Start accepts. Automaton has 60731 states and 99750 transitions. Word has length 123 [2021-12-21 14:14:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:14:08,438 INFO L470 AbstractCegarLoop]: Abstraction has 60731 states and 99750 transitions. [2021-12-21 14:14:08,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-21 14:14:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 60731 states and 99750 transitions. [2021-12-21 14:14:08,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-21 14:14:08,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:14:08,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:14:08,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:14:08,470 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:14:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:14:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-21 14:14:08,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:14:08,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109062610] [2021-12-21 14:14:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:14:08,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:14:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:14:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:14:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 14:14:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 14:14:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:14:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:14:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:14:08,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:14:08,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109062610] [2021-12-21 14:14:08,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109062610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:14:08,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:14:08,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:14:08,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372197986] [2021-12-21 14:14:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:14:08,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:14:08,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:14:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:14:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:14:08,562 INFO L87 Difference]: Start difference. First operand 60731 states and 99750 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)