./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_label40+token_ring.05.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 e270b9f7665b1c8abbbdbbd0440b4b4aa4509b75796aa73b96f40d2382c01832 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:49:46,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:49:46,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:49:46,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:49:46,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:49:46,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:49:46,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:49:46,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:49:46,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:49:46,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:49:46,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:49:46,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:49:46,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:49:46,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:49:46,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:49:46,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:49:46,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:49:46,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:49:46,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:49:46,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:49:46,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:49:46,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:49:46,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:49:46,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:49:46,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:49:46,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:49:46,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:49:46,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:49:46,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:49:46,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:49:46,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:49:46,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:49:46,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:49:46,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:49:46,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:49:46,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:49:46,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:49:46,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:49:46,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:49:46,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:49:46,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:49:46,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:49:46,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:49:46,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:49:46,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:49:46,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:49:46,450 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:49:46,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:49:46,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:49:46,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:49:46,451 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:49:46,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:49:46,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:49:46,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:49:46,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:49:46,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:49:46,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:49:46,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:49:46,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:49:46,453 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:49:46,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:49:46,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:49:46,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:49:46,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:49:46,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:49:46,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:49:46,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:49:46,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:49:46,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:49:46,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:49:46,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:49:46,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:49:46,456 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:49:46,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:49:46,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:49:46,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e270b9f7665b1c8abbbdbbd0440b4b4aa4509b75796aa73b96f40d2382c01832 [2021-12-28 01:49:46,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:49:46,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:49:46,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:49:46,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:49:46,789 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:49:46,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.05.cil-1.c [2021-12-28 01:49:46,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147f6de3d/853905d2ab274e558fead95f7986229d/FLAG27d67d963 [2021-12-28 01:49:47,670 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:49:47,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.05.cil-1.c [2021-12-28 01:49:47,705 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147f6de3d/853905d2ab274e558fead95f7986229d/FLAG27d67d963 [2021-12-28 01:49:47,828 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/147f6de3d/853905d2ab274e558fead95f7986229d [2021-12-28 01:49:47,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:49:47,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:49:47,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:49:47,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:49:47,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:49:47,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:49:47" (1/1) ... [2021-12-28 01:49:47,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f34d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:47, skipping insertion in model container [2021-12-28 01:49:47,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:49:47" (1/1) ... [2021-12-28 01:49:47,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:49:48,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:49:49,458 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_label40+token_ring.05.cil-1.c[377069,377082] [2021-12-28 01:49:49,482 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_label40+token_ring.05.cil-1.c[383339,383352] [2021-12-28 01:49:49,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:49:49,629 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:49:50,438 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_label40+token_ring.05.cil-1.c[377069,377082] [2021-12-28 01:49:50,446 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_label40+token_ring.05.cil-1.c[383339,383352] [2021-12-28 01:49:50,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:49:50,596 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:49:50,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50 WrapperNode [2021-12-28 01:49:50,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:49:50,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:49:50,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:49:50,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:49:50,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:50,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,123 INFO L137 Inliner]: procedures = 54, calls = 56, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 12793 [2021-12-28 01:49:51,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:49:51,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:49:51,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:49:51,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:49:51,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:49:51,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:49:51,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:49:51,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:49:51,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (1/1) ... [2021-12-28 01:49:51,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:49:51,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:49:51,844 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) [2021-12-28 01:49:51,865 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 [2021-12-28 01:49:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:49:51,879 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:49:51,880 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:49:51,880 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:49:51,880 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:49:51,880 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:49:51,880 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:49:51,880 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:49:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:49:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:49:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:49:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:49:51,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:49:51,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:49:51,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:49:51,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:49:52,038 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:49:52,039 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:49:57,691 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:49:57,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:49:57,720 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-28 01:49:57,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:49:57 BoogieIcfgContainer [2021-12-28 01:49:57,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:49:57,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:49:57,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:49:57,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:49:57,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:49:47" (1/3) ... [2021-12-28 01:49:57,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225ce8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:49:57, skipping insertion in model container [2021-12-28 01:49:57,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:49:50" (2/3) ... [2021-12-28 01:49:57,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225ce8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:49:57, skipping insertion in model container [2021-12-28 01:49:57,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:49:57" (3/3) ... [2021-12-28 01:49:57,730 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.05.cil-1.c [2021-12-28 01:49:57,734 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:49:57,734 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:49:57,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:49:57,785 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 [2021-12-28 01:49:57,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:49:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-28 01:49:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:49:57,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:49:57,843 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] [2021-12-28 01:49:57,844 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:49:57,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:49:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1427785225, now seen corresponding path program 1 times [2021-12-28 01:49:57,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:49:57,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211128588] [2021-12-28 01:49:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:49:57,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:49:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:49:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:49:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:49:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:49:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:49:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:49:58,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:49:58,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211128588] [2021-12-28 01:49:58,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211128588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:49:58,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:49:58,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:49:58,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380378568] [2021-12-28 01:49:58,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:49:58,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:49:58,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:49:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:49:58,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:49:58,278 INFO L87 Difference]: Start difference. First operand has 2390 states, 2362 states have (on average 1.8526672311600338) internal successors, (4376), 2365 states have internal predecessors, (4376), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-12-28 01:49:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:49:59,113 INFO L93 Difference]: Finished difference Result 4837 states and 8925 transitions. [2021-12-28 01:49:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:49:59,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2021-12-28 01:49:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:49:59,140 INFO L225 Difference]: With dead ends: 4837 [2021-12-28 01:49:59,140 INFO L226 Difference]: Without dead ends: 2388 [2021-12-28 01:49:59,148 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 [2021-12-28 01:49:59,151 INFO L933 BasicCegarLoop]: 4361 mSDtfsCounter, 507 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 16644 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:49:59,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 16644 Invalid, 398 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:49:59,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-12-28 01:49:59,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2323. [2021-12-28 01:49:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 2296 states have (on average 1.84102787456446) internal successors, (4227), 2298 states have internal predecessors, (4227), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-28 01:49:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 4265 transitions. [2021-12-28 01:49:59,280 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 4265 transitions. Word has length 101 [2021-12-28 01:49:59,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:49:59,281 INFO L470 AbstractCegarLoop]: Abstraction has 2323 states and 4265 transitions. [2021-12-28 01:49:59,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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) [2021-12-28 01:49:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 4265 transitions. [2021-12-28 01:49:59,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:49:59,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:49:59,296 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] [2021-12-28 01:49:59,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:49:59,297 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:49:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:49:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash 990118841, now seen corresponding path program 1 times [2021-12-28 01:49:59,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:49:59,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480443065] [2021-12-28 01:49:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:49:59,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:49:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:49:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:59,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:49:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:49:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:49:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:49:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:49:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:49:59,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:49:59,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480443065] [2021-12-28 01:49:59,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480443065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:49:59,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:49:59,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:49:59,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887578576] [2021-12-28 01:49:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:49:59,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:49:59,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:49:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:49:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:49:59,441 INFO L87 Difference]: Start difference. First operand 2323 states and 4265 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-28 01:50:00,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:00,772 INFO L93 Difference]: Finished difference Result 2835 states and 5072 transitions. [2021-12-28 01:50:00,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:50:00,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:00,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:00,786 INFO L225 Difference]: With dead ends: 2835 [2021-12-28 01:50:00,787 INFO L226 Difference]: Without dead ends: 2646 [2021-12-28 01:50:00,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:50:00,790 INFO L933 BasicCegarLoop]: 4316 mSDtfsCounter, 4705 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 16693 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:00,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 16693 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 01:50:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-12-28 01:50:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2517. [2021-12-28 01:50:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2469 states have (on average 1.820980153908465) internal successors, (4496), 2472 states have internal predecessors, (4496), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-28 01:50:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 4565 transitions. [2021-12-28 01:50:00,857 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 4565 transitions. Word has length 101 [2021-12-28 01:50:00,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:00,857 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 4565 transitions. [2021-12-28 01:50:00,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-28 01:50:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 4565 transitions. [2021-12-28 01:50:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:00,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:00,859 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] [2021-12-28 01:50:00,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:50:00,859 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:00,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:00,860 INFO L85 PathProgramCache]: Analyzing trace with hash -726765763, now seen corresponding path program 1 times [2021-12-28 01:50:00,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:00,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482174278] [2021-12-28 01:50:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:00,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:00,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:01,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:01,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:01,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482174278] [2021-12-28 01:50:01,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482174278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:01,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:01,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:01,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360270255] [2021-12-28 01:50:01,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:01,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:01,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:01,007 INFO L87 Difference]: Start difference. First operand 2517 states and 4565 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:02,500 INFO L93 Difference]: Finished difference Result 3293 states and 5783 transitions. [2021-12-28 01:50:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:50:02,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:02,513 INFO L225 Difference]: With dead ends: 3293 [2021-12-28 01:50:02,513 INFO L226 Difference]: Without dead ends: 2910 [2021-12-28 01:50:02,515 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 [2021-12-28 01:50:02,516 INFO L933 BasicCegarLoop]: 4461 mSDtfsCounter, 4711 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 21269 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:02,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 21269 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 01:50:02,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2021-12-28 01:50:02,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2698. [2021-12-28 01:50:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2629 states have (on average 1.8025865348041081) internal successors, (4739), 2633 states have internal predecessors, (4739), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-28 01:50:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 4838 transitions. [2021-12-28 01:50:02,583 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 4838 transitions. Word has length 101 [2021-12-28 01:50:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:02,584 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 4838 transitions. [2021-12-28 01:50:02,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 4838 transitions. [2021-12-28 01:50:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:02,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:02,586 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] [2021-12-28 01:50:02,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:50:02,586 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:02,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1689070587, now seen corresponding path program 1 times [2021-12-28 01:50:02,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:02,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200364922] [2021-12-28 01:50:02,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:02,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:02,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:02,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:02,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:02,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200364922] [2021-12-28 01:50:02,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200364922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:02,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:02,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:02,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272797878] [2021-12-28 01:50:02,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:02,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:02,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:02,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:02,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:02,684 INFO L87 Difference]: Start difference. First operand 2698 states and 4838 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:04,184 INFO L93 Difference]: Finished difference Result 3966 states and 6824 transitions. [2021-12-28 01:50:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:50:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:04,199 INFO L225 Difference]: With dead ends: 3966 [2021-12-28 01:50:04,200 INFO L226 Difference]: Without dead ends: 3402 [2021-12-28 01:50:04,202 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 [2021-12-28 01:50:04,203 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 4705 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 21257 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:04,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 21257 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 01:50:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2021-12-28 01:50:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3064. [2021-12-28 01:50:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 2953 states have (on average 1.771757534710464) internal successors, (5232), 2959 states have internal predecessors, (5232), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-12-28 01:50:04,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5395 transitions. [2021-12-28 01:50:04,305 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5395 transitions. Word has length 101 [2021-12-28 01:50:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:04,305 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 5395 transitions. [2021-12-28 01:50:04,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5395 transitions. [2021-12-28 01:50:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:04,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:04,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:50:04,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:50:04,308 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:04,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1039138759, now seen corresponding path program 1 times [2021-12-28 01:50:04,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:04,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172075452] [2021-12-28 01:50:04,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:04,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:04,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:04,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:04,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172075452] [2021-12-28 01:50:04,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172075452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:04,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:04,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:04,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325938499] [2021-12-28 01:50:04,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:04,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:04,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:04,398 INFO L87 Difference]: Start difference. First operand 3064 states and 5395 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:05,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:05,821 INFO L93 Difference]: Finished difference Result 5270 states and 8833 transitions. [2021-12-28 01:50:05,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:50:05,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:05,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:05,842 INFO L225 Difference]: With dead ends: 5270 [2021-12-28 01:50:05,842 INFO L226 Difference]: Without dead ends: 4340 [2021-12-28 01:50:05,847 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 [2021-12-28 01:50:05,848 INFO L933 BasicCegarLoop]: 4444 mSDtfsCounter, 4704 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4716 SdHoareTripleChecker+Valid, 21252 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:05,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4716 Valid, 21252 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 01:50:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2021-12-28 01:50:05,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3797. [2021-12-28 01:50:05,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3797 states, 3602 states have (on average 1.7262631871182677) internal successors, (6218), 3612 states have internal predecessors, (6218), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2021-12-28 01:50:05,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6515 transitions. [2021-12-28 01:50:05,975 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6515 transitions. Word has length 101 [2021-12-28 01:50:05,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:05,976 INFO L470 AbstractCegarLoop]: Abstraction has 3797 states and 6515 transitions. [2021-12-28 01:50:05,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6515 transitions. [2021-12-28 01:50:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:05,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:05,978 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] [2021-12-28 01:50:05,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:50:05,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:05,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2096976837, now seen corresponding path program 1 times [2021-12-28 01:50:05,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:05,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018222562] [2021-12-28 01:50:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:05,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:06,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:06,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:06,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:06,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:06,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:06,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018222562] [2021-12-28 01:50:06,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018222562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:06,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:06,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259761861] [2021-12-28 01:50:06,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:06,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:06,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:06,072 INFO L87 Difference]: Start difference. First operand 3797 states and 6515 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:07,363 INFO L93 Difference]: Finished difference Result 7877 states and 12867 transitions. [2021-12-28 01:50:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:50:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:07,393 INFO L225 Difference]: With dead ends: 7877 [2021-12-28 01:50:07,393 INFO L226 Difference]: Without dead ends: 6214 [2021-12-28 01:50:07,401 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 [2021-12-28 01:50:07,402 INFO L933 BasicCegarLoop]: 4439 mSDtfsCounter, 4703 mSDsluCounter, 16808 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4715 SdHoareTripleChecker+Valid, 21247 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:07,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4715 Valid, 21247 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:50:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6214 states. [2021-12-28 01:50:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6214 to 5270. [2021-12-28 01:50:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 4907 states have (on average 1.6710821275728551) internal successors, (8200), 4925 states have internal predecessors, (8200), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2021-12-28 01:50:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8783 transitions. [2021-12-28 01:50:07,614 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8783 transitions. Word has length 101 [2021-12-28 01:50:07,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:07,614 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 8783 transitions. [2021-12-28 01:50:07,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8783 transitions. [2021-12-28 01:50:07,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:07,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:07,620 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] [2021-12-28 01:50:07,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:50:07,621 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:07,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1055487993, now seen corresponding path program 1 times [2021-12-28 01:50:07,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:07,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46808682] [2021-12-28 01:50:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:07,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:07,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:07,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46808682] [2021-12-28 01:50:07,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46808682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:07,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:07,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:07,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806711687] [2021-12-28 01:50:07,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:07,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:07,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:07,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:07,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:07,734 INFO L87 Difference]: Start difference. First operand 5270 states and 8783 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:09,341 INFO L93 Difference]: Finished difference Result 14356 states and 22887 transitions. [2021-12-28 01:50:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:50:09,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:09,383 INFO L225 Difference]: With dead ends: 14356 [2021-12-28 01:50:09,384 INFO L226 Difference]: Without dead ends: 11220 [2021-12-28 01:50:09,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:50:09,399 INFO L933 BasicCegarLoop]: 4319 mSDtfsCounter, 4963 mSDsluCounter, 16488 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4981 SdHoareTripleChecker+Valid, 20807 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:09,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4981 Valid, 20807 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:50:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-12-28 01:50:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 8183. [2021-12-28 01:50:09,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8183 states, 7500 states have (on average 1.6205333333333334) internal successors, (12154), 7534 states have internal predecessors, (12154), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2021-12-28 01:50:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8183 states to 8183 states and 13331 transitions. [2021-12-28 01:50:09,868 INFO L78 Accepts]: Start accepts. Automaton has 8183 states and 13331 transitions. Word has length 101 [2021-12-28 01:50:09,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:09,869 INFO L470 AbstractCegarLoop]: Abstraction has 8183 states and 13331 transitions. [2021-12-28 01:50:09,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8183 states and 13331 transitions. [2021-12-28 01:50:09,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:09,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:09,876 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] [2021-12-28 01:50:09,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:50:09,876 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:09,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:09,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1295727739, now seen corresponding path program 1 times [2021-12-28 01:50:09,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:09,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595678901] [2021-12-28 01:50:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:09,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:09,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:09,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:09,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:09,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595678901] [2021-12-28 01:50:09,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595678901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:09,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:09,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:09,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128835179] [2021-12-28 01:50:09,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:09,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:09,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:09,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:09,981 INFO L87 Difference]: Start difference. First operand 8183 states and 13331 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:12,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:12,178 INFO L93 Difference]: Finished difference Result 25523 states and 40429 transitions. [2021-12-28 01:50:12,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:50:12,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:12,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:12,238 INFO L225 Difference]: With dead ends: 25523 [2021-12-28 01:50:12,239 INFO L226 Difference]: Without dead ends: 19474 [2021-12-28 01:50:12,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:50:12,264 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 4743 mSDsluCounter, 16797 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4754 SdHoareTripleChecker+Valid, 21299 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:12,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4754 Valid, 21299 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 01:50:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19474 states. [2021-12-28 01:50:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19474 to 13832. [2021-12-28 01:50:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 12525 states have (on average 1.582435129740519) internal successors, (19820), 12591 states have internal predecessors, (19820), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2021-12-28 01:50:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 22315 transitions. [2021-12-28 01:50:12,941 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 22315 transitions. Word has length 101 [2021-12-28 01:50:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:12,941 INFO L470 AbstractCegarLoop]: Abstraction has 13832 states and 22315 transitions. [2021-12-28 01:50:12,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 22315 transitions. [2021-12-28 01:50:12,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:12,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:12,952 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] [2021-12-28 01:50:12,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:50:12,952 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:12,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2134761401, now seen corresponding path program 1 times [2021-12-28 01:50:12,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:12,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745995358] [2021-12-28 01:50:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:12,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:12,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:12,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:13,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:13,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:13,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745995358] [2021-12-28 01:50:13,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745995358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:13,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:13,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:13,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248200083] [2021-12-28 01:50:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:13,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:13,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:13,064 INFO L87 Difference]: Start difference. First operand 13832 states and 22315 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:15,729 INFO L93 Difference]: Finished difference Result 46786 states and 74419 transitions. [2021-12-28 01:50:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:50:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:15,860 INFO L225 Difference]: With dead ends: 46786 [2021-12-28 01:50:15,861 INFO L226 Difference]: Without dead ends: 35088 [2021-12-28 01:50:15,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:50:15,915 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 4835 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4853 SdHoareTripleChecker+Valid, 21222 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:15,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4853 Valid, 21222 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:50:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35088 states. [2021-12-28 01:50:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35088 to 25257. [2021-12-28 01:50:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25257 states, 22734 states have (on average 1.5588105920647488) internal successors, (35438), 22864 states have internal predecessors, (35438), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2021-12-28 01:50:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25257 states to 25257 states and 40991 transitions. [2021-12-28 01:50:17,220 INFO L78 Accepts]: Start accepts. Automaton has 25257 states and 40991 transitions. Word has length 101 [2021-12-28 01:50:17,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:17,221 INFO L470 AbstractCegarLoop]: Abstraction has 25257 states and 40991 transitions. [2021-12-28 01:50:17,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 25257 states and 40991 transitions. [2021-12-28 01:50:17,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:17,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:17,239 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] [2021-12-28 01:50:17,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:50:17,239 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:17,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:17,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2133140293, now seen corresponding path program 1 times [2021-12-28 01:50:17,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:17,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655313572] [2021-12-28 01:50:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:17,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:17,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:17,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:17,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655313572] [2021-12-28 01:50:17,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655313572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:17,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:17,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:17,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670569803] [2021-12-28 01:50:17,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:17,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:17,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:17,327 INFO L87 Difference]: Start difference. First operand 25257 states and 40991 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:21,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:21,827 INFO L93 Difference]: Finished difference Result 88545 states and 143161 transitions. [2021-12-28 01:50:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:50:21,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:22,089 INFO L225 Difference]: With dead ends: 88545 [2021-12-28 01:50:22,090 INFO L226 Difference]: Without dead ends: 65422 [2021-12-28 01:50:22,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:50:22,160 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 4798 mSDsluCounter, 16800 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21215 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:22,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4816 Valid, 21215 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:50:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65422 states. [2021-12-28 01:50:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65422 to 48042. [2021-12-28 01:50:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5465690250515631) internal successors, (66736), 43409 states have internal predecessors, (66736), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-28 01:50:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79735 transitions. [2021-12-28 01:50:24,680 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79735 transitions. Word has length 101 [2021-12-28 01:50:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:24,680 INFO L470 AbstractCegarLoop]: Abstraction has 48042 states and 79735 transitions. [2021-12-28 01:50:24,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79735 transitions. [2021-12-28 01:50:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:24,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:24,713 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] [2021-12-28 01:50:24,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:50:24,714 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash 84490105, now seen corresponding path program 1 times [2021-12-28 01:50:24,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:24,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540239241] [2021-12-28 01:50:24,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:24,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:24,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:24,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:24,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540239241] [2021-12-28 01:50:24,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540239241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:24,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:24,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:50:24,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941594296] [2021-12-28 01:50:24,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:24,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:50:24,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:24,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:50:24,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:50:24,820 INFO L87 Difference]: Start difference. First operand 48042 states and 79735 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:28,720 INFO L93 Difference]: Finished difference Result 105804 states and 179852 transitions. [2021-12-28 01:50:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:50:28,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:28,935 INFO L225 Difference]: With dead ends: 105804 [2021-12-28 01:50:28,936 INFO L226 Difference]: Without dead ends: 59896 [2021-12-28 01:50:29,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:50:29,045 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4508 mSDsluCounter, 16313 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4521 SdHoareTripleChecker+Valid, 20555 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:29,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4521 Valid, 20555 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:50:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59896 states. [2021-12-28 01:50:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59896 to 48042. [2021-12-28 01:50:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48042 states, 43151 states have (on average 1.5406131955226994) internal successors, (66479), 43409 states have internal predecessors, (66479), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-28 01:50:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48042 states to 48042 states and 79478 transitions. [2021-12-28 01:50:31,785 INFO L78 Accepts]: Start accepts. Automaton has 48042 states and 79478 transitions. Word has length 101 [2021-12-28 01:50:31,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:31,785 INFO L470 AbstractCegarLoop]: Abstraction has 48042 states and 79478 transitions. [2021-12-28 01:50:31,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2021-12-28 01:50:31,785 INFO L276 IsEmpty]: Start isEmpty. Operand 48042 states and 79478 transitions. [2021-12-28 01:50:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 01:50:31,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:50:31,818 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] [2021-12-28 01:50:31,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:50:31,818 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:50:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:50:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash 971712951, now seen corresponding path program 1 times [2021-12-28 01:50:31,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:50:31,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281732150] [2021-12-28 01:50:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:50:31,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:50:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:50:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-28 01:50:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 01:50:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 01:50:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:50:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:50:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:50:31,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:50:31,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281732150] [2021-12-28 01:50:31,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281732150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:50:31,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:50:31,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:50:31,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324225668] [2021-12-28 01:50:31,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:50:31,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:50:31,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:50:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:50:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:50:31,902 INFO L87 Difference]: Start difference. First operand 48042 states and 79478 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-28 01:50:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:50:37,670 INFO L93 Difference]: Finished difference Result 133917 states and 218160 transitions. [2021-12-28 01:50:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:50:37,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2021-12-28 01:50:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:50:37,973 INFO L225 Difference]: With dead ends: 133917 [2021-12-28 01:50:37,973 INFO L226 Difference]: Without dead ends: 88010 [2021-12-28 01:50:38,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-28 01:50:38,099 INFO L933 BasicCegarLoop]: 4560 mSDtfsCounter, 4915 mSDsluCounter, 12498 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 17058 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:50:38,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 17058 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:50:38,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88010 states. [2021-12-28 01:50:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88010 to 70805. [2021-12-28 01:50:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70805 states, 63397 states have (on average 1.525561146426487) internal successors, (96716), 63912 states have internal predecessors, (96716), 4706 states have call successors, (4706), 2316 states have call predecessors, (4706), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2021-12-28 01:50:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70805 states to 70805 states and 115133 transitions. [2021-12-28 01:50:42,124 INFO L78 Accepts]: Start accepts. Automaton has 70805 states and 115133 transitions. Word has length 101 [2021-12-28 01:50:42,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:50:42,125 INFO L470 AbstractCegarLoop]: Abstraction has 70805 states and 115133 transitions. [2021-12-28 01:50:42,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-12-28 01:50:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 70805 states and 115133 transitions.