./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.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_label45+token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4c883892095e0f755900dfa24a6bc793b8370cf6ff9d1a6368a9f789f01f5b0 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:56:46,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:56:46,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:56:46,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:56:46,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:56:46,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:56:46,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:56:46,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:56:46,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:56:46,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:56:46,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:56:46,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:56:46,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:56:46,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:56:46,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:56:46,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:56:46,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:56:46,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:56:46,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:56:46,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:56:46,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:56:46,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:56:46,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:56:46,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:56:46,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:56:46,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:56:46,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:56:46,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:56:46,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:56:46,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:56:46,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:56:46,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:56:46,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:56:46,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:56:46,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:56:46,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:56:46,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:56:46,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:56:46,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:56:46,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:56:46,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:56:46,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:56:46,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:56:46,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:56:46,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:56:46,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:56:46,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:56:46,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:56:46,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:56:46,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:56:46,664 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:56:46,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:56:46,664 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:56:46,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:56:46,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:56:46,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:56:46,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:56:46,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:56:46,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:56:46,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:56:46,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:56:46,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:56:46,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:56:46,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:56:46,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:56:46,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:56:46,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:56:46,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:56:46,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:56:46,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:56:46,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:56:46,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:56:46,672 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:56:46,672 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:56:46,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:56:46,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4c883892095e0f755900dfa24a6bc793b8370cf6ff9d1a6368a9f789f01f5b0 [2021-12-28 01:56:46,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:56:46,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:56:46,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:56:46,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:56:46,971 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:56:46,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-1.c [2021-12-28 01:56:47,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7d96299/297d5107a9014035950b0ac6272bd985/FLAGe2643cd38 [2021-12-28 01:56:47,718 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:56:47,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.07.cil-1.c [2021-12-28 01:56:47,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7d96299/297d5107a9014035950b0ac6272bd985/FLAGe2643cd38 [2021-12-28 01:56:48,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f7d96299/297d5107a9014035950b0ac6272bd985 [2021-12-28 01:56:48,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:56:48,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:56:48,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:56:48,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:56:48,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:56:48,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:56:48" (1/1) ... [2021-12-28 01:56:48,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@297feffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:48, skipping insertion in model container [2021-12-28 01:56:48,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:56:48" (1/1) ... [2021-12-28 01:56:48,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:56:48,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:56:49,585 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_label45+token_ring.07.cil-1.c[380323,380336] [2021-12-28 01:56:49,606 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_label45+token_ring.07.cil-1.c[383339,383352] [2021-12-28 01:56:49,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:56:49,779 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:56:50,431 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_label45+token_ring.07.cil-1.c[380323,380336] [2021-12-28 01:56:50,435 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_label45+token_ring.07.cil-1.c[383339,383352] [2021-12-28 01:56:50,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:56:50,502 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:56:50,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50 WrapperNode [2021-12-28 01:56:50,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:56:50,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:56:50,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:56:50,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:56:50,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:50,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:50,922 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-28 01:56:50,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:56:50,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:56:50,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:56:50,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:56:50,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:50,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:51,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:51,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:51,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:51,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:51,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:51,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:56:51,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:56:51,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:56:51,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:56:51,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (1/1) ... [2021-12-28 01:56:51,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:56:51,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:56:51,403 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 01:56:51,408 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 01:56:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:56:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:56:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:56:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:56:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:56:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:56:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:56:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:56:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:56:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:56:51,429 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:56:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:56:51,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:56:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:56:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:56:51,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:56:51,523 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:56:51,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:56:56,391 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:56:56,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:56:56,414 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-28 01:56:56,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:56:56 BoogieIcfgContainer [2021-12-28 01:56:56,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:56:56,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:56:56,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:56:56,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:56:56,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:56:48" (1/3) ... [2021-12-28 01:56:56,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91026e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:56:56, skipping insertion in model container [2021-12-28 01:56:56,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:56:50" (2/3) ... [2021-12-28 01:56:56,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91026e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:56:56, skipping insertion in model container [2021-12-28 01:56:56,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:56:56" (3/3) ... [2021-12-28 01:56:56,425 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.07.cil-1.c [2021-12-28 01:56:56,429 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:56:56,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:56:56,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:56:56,476 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 01:56:56,477 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:56:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-28 01:56:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:56:56,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:56:56,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:56:56,523 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:56:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:56:56,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-28 01:56:56,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:56:56,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399965170] [2021-12-28 01:56:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:56:56,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:56:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:56,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:56:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:56:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:56:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:56:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:56:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:56,891 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 01:56:56,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:56:56,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399965170] [2021-12-28 01:56:56,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399965170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:56:56,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:56:56,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:56:56,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477957444] [2021-12-28 01:56:56,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:56:56,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:56:56,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:56:56,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:56:56,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:56:56,923 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:56:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:56:57,772 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-28 01:56:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:56:57,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:56:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:56:57,791 INFO L225 Difference]: With dead ends: 4955 [2021-12-28 01:56:57,792 INFO L226 Difference]: Without dead ends: 2460 [2021-12-28 01:56:57,798 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 01:56:57,801 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12335 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:56:57,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16788 Invalid, 508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 01:56:57,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-28 01:56:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-28 01:56:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-28 01:56:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-28 01:56:57,897 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-28 01:56:57,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:56:57,897 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-28 01:56:57,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:56:57,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-28 01:56:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:56:57,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:56:57,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:56:57,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:56:57,901 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:56:57,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:56:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-28 01:56:57,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:56:57,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253805298] [2021-12-28 01:56:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:56:57,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:56:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:56:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:56:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:56:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:56:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:56:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:58,159 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 01:56:58,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:56:58,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253805298] [2021-12-28 01:56:58,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253805298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:56:58,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:56:58,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:56:58,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155877743] [2021-12-28 01:56:58,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:56:58,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:56:58,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:56:58,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:56:58,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:56:58,163 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:56:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:56:59,469 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-28 01:56:59,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:56:59,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:56:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:56:59,479 INFO L225 Difference]: With dead ends: 3029 [2021-12-28 01:56:59,479 INFO L226 Difference]: Without dead ends: 2792 [2021-12-28 01:56:59,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:56:59,482 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16919 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:56:59,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16919 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:56:59,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-28 01:56:59,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-28 01:56:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-28 01:56:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-28 01:56:59,537 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-28 01:56:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:56:59,537 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-28 01:56:59,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:56:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-28 01:56:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:56:59,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:56:59,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:56:59,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:56:59,540 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:56:59,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:56:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-28 01:56:59,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:56:59,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372917041] [2021-12-28 01:56:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:56:59,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:56:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:56:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:59,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:56:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:56:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:56:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:59,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:56:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:56:59,704 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 01:56:59,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:56:59,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372917041] [2021-12-28 01:56:59,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372917041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:56:59,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:56:59,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:56:59,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817083075] [2021-12-28 01:56:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:56:59,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:56:59,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:56:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:56:59,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:56:59,707 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:01,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:01,493 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2021-12-28 01:57:01,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:57:01,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:01,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:01,505 INFO L225 Difference]: With dead ends: 3617 [2021-12-28 01:57:01,505 INFO L226 Difference]: Without dead ends: 3134 [2021-12-28 01:57:01,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:57:01,515 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21671 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:01,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 21671 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:57:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-12-28 01:57:01,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2021-12-28 01:57:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-28 01:57:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2021-12-28 01:57:01,601 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2021-12-28 01:57:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:01,602 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2021-12-28 01:57:01,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2021-12-28 01:57:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:01,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:01,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:01,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:57:01,605 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:01,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-28 01:57:01,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:01,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952395691] [2021-12-28 01:57:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:01,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:01,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:01,742 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 01:57:01,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:01,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952395691] [2021-12-28 01:57:01,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952395691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:01,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:01,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:01,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051983944] [2021-12-28 01:57:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:01,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:01,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:01,747 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:03,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:03,467 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2021-12-28 01:57:03,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:57:03,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:03,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:03,486 INFO L225 Difference]: With dead ends: 4483 [2021-12-28 01:57:03,486 INFO L226 Difference]: Without dead ends: 3771 [2021-12-28 01:57:03,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:57:03,495 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 21663 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:03,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 21663 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:57:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-12-28 01:57:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2021-12-28 01:57:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-28 01:57:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2021-12-28 01:57:03,599 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2021-12-28 01:57:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:03,599 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2021-12-28 01:57:03,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:03,604 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2021-12-28 01:57:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:03,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:03,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:03,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:57:03,606 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:03,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-28 01:57:03,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:03,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941443283] [2021-12-28 01:57:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:03,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:03,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:03,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:03,709 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 01:57:03,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:03,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941443283] [2021-12-28 01:57:03,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941443283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:03,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:03,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:03,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892957528] [2021-12-28 01:57:03,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:03,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:03,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:03,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:03,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:03,712 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:05,353 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2021-12-28 01:57:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:57:05,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:05,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:05,375 INFO L225 Difference]: With dead ends: 6150 [2021-12-28 01:57:05,375 INFO L226 Difference]: Without dead ends: 4979 [2021-12-28 01:57:05,382 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 01:57:05,383 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 21659 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:05,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4951 Valid, 21659 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 01:57:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-12-28 01:57:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2021-12-28 01:57:05,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-28 01:57:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2021-12-28 01:57:05,523 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2021-12-28 01:57:05,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:05,524 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2021-12-28 01:57:05,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:05,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2021-12-28 01:57:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:05,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:05,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:05,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:57:05,527 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-28 01:57:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:05,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65508158] [2021-12-28 01:57:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:05,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:05,612 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 01:57:05,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:05,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65508158] [2021-12-28 01:57:05,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65508158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:05,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:05,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:05,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719245558] [2021-12-28 01:57:05,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:05,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:05,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:05,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:05,614 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:07,404 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2021-12-28 01:57:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:57:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:07,443 INFO L225 Difference]: With dead ends: 9483 [2021-12-28 01:57:07,443 INFO L226 Difference]: Without dead ends: 7393 [2021-12-28 01:57:07,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:57:07,454 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21655 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:07,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21655 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 01:57:07,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2021-12-28 01:57:07,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2021-12-28 01:57:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-28 01:57:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2021-12-28 01:57:07,676 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2021-12-28 01:57:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:07,676 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2021-12-28 01:57:07,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2021-12-28 01:57:07,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:07,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:07,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:07,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:57:07,681 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:07,681 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-28 01:57:07,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:07,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162525608] [2021-12-28 01:57:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:07,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:07,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:07,773 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 01:57:07,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162525608] [2021-12-28 01:57:07,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162525608] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:07,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:07,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:07,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825757882] [2021-12-28 01:57:07,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:07,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:07,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:07,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:07,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:07,776 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:09,872 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2021-12-28 01:57:09,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:57:09,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:09,917 INFO L225 Difference]: With dead ends: 16148 [2021-12-28 01:57:09,917 INFO L226 Difference]: Without dead ends: 12215 [2021-12-28 01:57:09,935 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 01:57:09,937 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 4932 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:09,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21649 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 01:57:09,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2021-12-28 01:57:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2021-12-28 01:57:10,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-28 01:57:10,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2021-12-28 01:57:10,369 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2021-12-28 01:57:10,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:10,369 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2021-12-28 01:57:10,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:10,370 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2021-12-28 01:57:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:10,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:10,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:10,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:57:10,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-28 01:57:10,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:10,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262743334] [2021-12-28 01:57:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:10,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:10,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:10,474 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 01:57:10,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:10,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262743334] [2021-12-28 01:57:10,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262743334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:10,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:10,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:10,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11125238] [2021-12-28 01:57:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:10,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:10,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:10,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:10,476 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:11,669 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2021-12-28 01:57:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:57:11,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:11,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:11,703 INFO L225 Difference]: With dead ends: 19942 [2021-12-28 01:57:11,703 INFO L226 Difference]: Without dead ends: 12310 [2021-12-28 01:57:11,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:57:11,723 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12356 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16706 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:11,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16706 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 01:57:11,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2021-12-28 01:57:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2021-12-28 01:57:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-28 01:57:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2021-12-28 01:57:12,083 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2021-12-28 01:57:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:12,084 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2021-12-28 01:57:12,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2021-12-28 01:57:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:12,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:12,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:12,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:57:12,089 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-28 01:57:12,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606439884] [2021-12-28 01:57:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:12,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:12,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:12,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:12,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:12,176 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 01:57:12,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:12,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606439884] [2021-12-28 01:57:12,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606439884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:12,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:12,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:12,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247954913] [2021-12-28 01:57:12,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:12,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:12,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:12,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:12,179 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:15,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:15,061 INFO L93 Difference]: Finished difference Result 32836 states and 52097 transitions. [2021-12-28 01:57:15,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:57:15,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:15,142 INFO L225 Difference]: With dead ends: 32836 [2021-12-28 01:57:15,142 INFO L226 Difference]: Without dead ends: 25204 [2021-12-28 01:57:15,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:57:15,172 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 5211 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 21625 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:15,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5233 Valid, 21625 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:57:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2021-12-28 01:57:16,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 17165. [2021-12-28 01:57:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 15696 states have (on average 1.5779179408766564) internal successors, (24767), 15762 states have internal predecessors, (24767), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-28 01:57:16,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 27586 transitions. [2021-12-28 01:57:16,067 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 27586 transitions. Word has length 123 [2021-12-28 01:57:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:16,067 INFO L470 AbstractCegarLoop]: Abstraction has 17165 states and 27586 transitions. [2021-12-28 01:57:16,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 27586 transitions. [2021-12-28 01:57:16,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:16,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:16,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:16,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:57:16,077 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:16,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-28 01:57:16,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:16,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678494506] [2021-12-28 01:57:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:16,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:16,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:16,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:16,164 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 01:57:16,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:16,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678494506] [2021-12-28 01:57:16,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678494506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:16,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:16,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:16,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270327905] [2021-12-28 01:57:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:16,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:16,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:16,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:16,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:16,166 INFO L87 Difference]: Start difference. First operand 17165 states and 27586 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:20,734 INFO L93 Difference]: Finished difference Result 61867 states and 98487 transitions. [2021-12-28 01:57:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:57:20,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:20,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:20,888 INFO L225 Difference]: With dead ends: 61867 [2021-12-28 01:57:20,889 INFO L226 Difference]: Without dead ends: 46838 [2021-12-28 01:57:20,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:57:20,936 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 4981 mSDsluCounter, 17053 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 21724 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:20,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 21724 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:57:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46838 states. [2021-12-28 01:57:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46838 to 31602. [2021-12-28 01:57:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31602 states, 28757 states have (on average 1.5581945265500574) internal successors, (44809), 28887 states have internal predecessors, (44809), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-28 01:57:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31602 states to 31602 states and 51006 transitions. [2021-12-28 01:57:22,698 INFO L78 Accepts]: Start accepts. Automaton has 31602 states and 51006 transitions. Word has length 123 [2021-12-28 01:57:22,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:22,699 INFO L470 AbstractCegarLoop]: Abstraction has 31602 states and 51006 transitions. [2021-12-28 01:57:22,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:22,699 INFO L276 IsEmpty]: Start isEmpty. Operand 31602 states and 51006 transitions. [2021-12-28 01:57:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:22,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:22,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:22,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:57:22,718 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:22,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-28 01:57:22,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:22,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206439446] [2021-12-28 01:57:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:22,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:22,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:22,802 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 01:57:22,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:22,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206439446] [2021-12-28 01:57:22,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206439446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:22,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:22,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:22,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950856871] [2021-12-28 01:57:22,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:22,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:22,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:22,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:22,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:22,804 INFO L87 Difference]: Start difference. First operand 31602 states and 51006 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:57:30,286 INFO L93 Difference]: Finished difference Result 117782 states and 189717 transitions. [2021-12-28 01:57:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:57:30,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:57:30,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:57:30,537 INFO L225 Difference]: With dead ends: 117782 [2021-12-28 01:57:30,537 INFO L226 Difference]: Without dead ends: 88316 [2021-12-28 01:57:30,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:57:30,609 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 5131 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5153 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:57:30,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5153 Valid, 21615 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 01:57:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88316 states. [2021-12-28 01:57:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88316 to 60731. [2021-12-28 01:57:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60731 states, 55198 states have (on average 1.5483713178013696) internal successors, (85467), 55456 states have internal predecessors, (85467), 3733 states have call successors, (3733), 1542 states have call predecessors, (3733), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2021-12-28 01:57:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60731 states to 60731 states and 99750 transitions. [2021-12-28 01:57:34,496 INFO L78 Accepts]: Start accepts. Automaton has 60731 states and 99750 transitions. Word has length 123 [2021-12-28 01:57:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:57:34,496 INFO L470 AbstractCegarLoop]: Abstraction has 60731 states and 99750 transitions. [2021-12-28 01:57:34,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:57:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 60731 states and 99750 transitions. [2021-12-28 01:57:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:57:34,528 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:57:34,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:57:34,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:57:34,529 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:57:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:57:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-28 01:57:34,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:57:34,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142234087] [2021-12-28 01:57:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:57:34,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:57:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:57:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:34,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:57:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:57:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:57:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:57:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:57:34,620 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 01:57:34,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:57:34,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142234087] [2021-12-28 01:57:34,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142234087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:57:34,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:57:34,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:57:34,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874197351] [2021-12-28 01:57:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:57:34,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:57:34,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:57:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:57:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:57:34,622 INFO L87 Difference]: Start difference. First operand 60731 states and 99750 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)