./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_label49+token_ring.04.cil-2.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 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:27:52,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:27:52,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:27:52,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:27:52,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:27:52,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:27:52,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:27:52,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:27:52,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:27:52,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:27:52,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:27:52,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:27:52,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:27:52,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:27:52,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:27:52,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:27:52,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:27:52,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:27:52,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:27:52,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:27:52,296 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:27:52,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:27:52,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:27:52,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:27:52,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:27:52,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:27:52,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:27:52,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:27:52,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:27:52,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:27:52,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:27:52,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:27:52,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:27:52,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:27:52,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:27:52,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:27:52,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:27:52,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:27:52,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:27:52,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:27:52,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:27:52,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:27:52,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:27:52,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:27:52,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:27:52,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:27:52,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:27:52,339 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:27:52,339 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:27:52,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:27:52,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:27:52,340 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:27:52,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:27:52,341 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:27:52,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:27:52,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:27:52,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:27:52,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:27:52,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:27:52,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:27:52,342 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:27:52,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:27:52,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:27:52,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:27:52,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:27:52,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:27:52,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:27:52,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:27:52,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:27:52,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:27:52,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:27:52,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:27:52,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:27:52,344 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:27:52,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:27:52,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:27:52,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3add2c82410ff745811ed91690a644a775913a086eeabc1a421c899bac857c34 [2022-07-12 08:27:52,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:27:52,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:27:52,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:27:52,561 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:27:52,562 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:27:52,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2022-07-12 08:27:52,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989b386c9/6b58f4b8023c4047b646204a458b5f28/FLAG3532c219c [2022-07-12 08:27:53,227 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:27:53,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.04.cil-2.c [2022-07-12 08:27:53,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989b386c9/6b58f4b8023c4047b646204a458b5f28/FLAG3532c219c [2022-07-12 08:27:53,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/989b386c9/6b58f4b8023c4047b646204a458b5f28 [2022-07-12 08:27:53,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:27:53,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:27:53,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:27:53,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:27:53,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:27:53,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:27:53" (1/1) ... [2022-07-12 08:27:53,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599c73a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:53, skipping insertion in model container [2022-07-12 08:27:53,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:27:53" (1/1) ... [2022-07-12 08:27:53,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:27:53,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:27:54,855 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_label49+token_ring.04.cil-2.c[380593,380606] [2022-07-12 08:27:54,873 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_label49+token_ring.04.cil-2.c[383339,383352] [2022-07-12 08:27:55,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:27:55,018 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:27:55,584 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_label49+token_ring.04.cil-2.c[380593,380606] [2022-07-12 08:27:55,588 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_label49+token_ring.04.cil-2.c[383339,383352] [2022-07-12 08:27:55,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:27:55,645 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:27:55,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55 WrapperNode [2022-07-12 08:27:55,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:27:55,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:27:55,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:27:55,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:27:55,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:55,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,081 INFO L137 Inliner]: procedures = 52, calls = 54, calls flagged for inlining = 29, calls inlined = 29, statements flattened = 12740 [2022-07-12 08:27:56,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:27:56,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:27:56,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:27:56,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:27:56,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:27:56,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:27:56,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:27:56,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:27:56,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (1/1) ... [2022-07-12 08:27:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:27:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:27:56,581 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) [2022-07-12 08:27:56,623 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 [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:27:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:27:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:27:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:27:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:27:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:27:56,661 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:27:56,661 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:27:56,662 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:27:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:27:56,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:27:56,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:27:56,763 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:27:56,775 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:28:01,368 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:28:01,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:28:01,389 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 08:28:01,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:28:01 BoogieIcfgContainer [2022-07-12 08:28:01,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:28:01,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:28:01,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:28:01,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:28:01,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:27:53" (1/3) ... [2022-07-12 08:28:01,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3921ee3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:28:01, skipping insertion in model container [2022-07-12 08:28:01,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:27:55" (2/3) ... [2022-07-12 08:28:01,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3921ee3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:28:01, skipping insertion in model container [2022-07-12 08:28:01,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:28:01" (3/3) ... [2022-07-12 08:28:01,399 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.04.cil-2.c [2022-07-12 08:28:01,408 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:28:01,409 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:28:01,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:28:01,473 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3369435d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13904fe [2022-07-12 08:28:01,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:28:01,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-12 08:28:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:01,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:01,494 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:01,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1085362317, now seen corresponding path program 1 times [2022-07-12 08:28:01,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:01,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817952849] [2022-07-12 08:28:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:01,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:01,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:01,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:01,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:01,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817952849] [2022-07-12 08:28:01,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817952849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:01,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:01,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:28:01,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827110387] [2022-07-12 08:28:01,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:01,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:28:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:28:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:28:01,834 INFO L87 Difference]: Start difference. First operand has 2373 states, 2343 states have (on average 1.8544600938967135) internal successors, (4345), 2348 states have internal predecessors, (4345), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:02,493 INFO L93 Difference]: Finished difference Result 4793 states and 8852 transitions. [2022-07-12 08:28:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:28:02,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:02,512 INFO L225 Difference]: With dead ends: 4793 [2022-07-12 08:28:02,512 INFO L226 Difference]: Without dead ends: 2359 [2022-07-12 08:28:02,519 INFO L412 NwaCegarLoop]: 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 [2022-07-12 08:28:02,521 INFO L413 NwaCegarLoop]: 4327 mSDtfsCounter, 448 mSDsluCounter, 12275 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 16602 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:02,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 16602 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 08:28:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-07-12 08:28:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2305. [2022-07-12 08:28:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2277 states have (on average 1.8436539306104522) internal successors, (4198), 2280 states have internal predecessors, (4198), 20 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-12 08:28:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4236 transitions. [2022-07-12 08:28:02,610 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 4236 transitions. Word has length 91 [2022-07-12 08:28:02,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:02,610 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 4236 transitions. [2022-07-12 08:28:02,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 4236 transitions. [2022-07-12 08:28:02,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:02,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:02,614 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:02,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:28:02,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:02,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1642847029, now seen corresponding path program 1 times [2022-07-12 08:28:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:02,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979943653] [2022-07-12 08:28:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:02,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:02,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:02,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:02,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979943653] [2022-07-12 08:28:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979943653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:02,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:02,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:28:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013111295] [2022-07-12 08:28:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:02,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:28:02,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:28:02,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:28:02,779 INFO L87 Difference]: Start difference. First operand 2305 states and 4236 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:03,551 INFO L93 Difference]: Finished difference Result 2759 states and 4947 transitions. [2022-07-12 08:28:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:28:03,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:03,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:03,560 INFO L225 Difference]: With dead ends: 2759 [2022-07-12 08:28:03,560 INFO L226 Difference]: Without dead ends: 2587 [2022-07-12 08:28:03,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:28:03,564 INFO L413 NwaCegarLoop]: 4278 mSDtfsCounter, 4606 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 16630 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:03,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 16630 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 08:28:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2022-07-12 08:28:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 2478. [2022-07-12 08:28:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 2430 states have (on average 1.825514403292181) internal successors, (4436), 2434 states have internal predecessors, (4436), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2022-07-12 08:28:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 4503 transitions. [2022-07-12 08:28:03,618 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 4503 transitions. Word has length 91 [2022-07-12 08:28:03,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:03,619 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 4503 transitions. [2022-07-12 08:28:03,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 4503 transitions. [2022-07-12 08:28:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:03,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:03,627 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:03,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:28:03,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash -411857615, now seen corresponding path program 1 times [2022-07-12 08:28:03,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:03,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849030648] [2022-07-12 08:28:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:03,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:03,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:03,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:03,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849030648] [2022-07-12 08:28:03,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849030648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:03,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:03,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214976716] [2022-07-12 08:28:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:03,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:03,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:03,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:03,737 INFO L87 Difference]: Start difference. First operand 2478 states and 4503 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:04,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:04,748 INFO L93 Difference]: Finished difference Result 3162 states and 5569 transitions. [2022-07-12 08:28:04,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:28:04,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:04,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:04,758 INFO L225 Difference]: With dead ends: 3162 [2022-07-12 08:28:04,758 INFO L226 Difference]: Without dead ends: 2817 [2022-07-12 08:28:04,760 INFO L412 NwaCegarLoop]: 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 [2022-07-12 08:28:04,761 INFO L413 NwaCegarLoop]: 4413 mSDtfsCounter, 4602 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 21176 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:04,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 21176 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:28:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-07-12 08:28:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2640. [2022-07-12 08:28:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2572 states have (on average 1.8087091757387248) internal successors, (4652), 2577 states have internal predecessors, (4652), 46 states have call successors, (46), 19 states have call predecessors, (46), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-12 08:28:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 4747 transitions. [2022-07-12 08:28:04,897 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 4747 transitions. Word has length 91 [2022-07-12 08:28:04,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:04,898 INFO L495 AbstractCegarLoop]: Abstraction has 2640 states and 4747 transitions. [2022-07-12 08:28:04,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 4747 transitions. [2022-07-12 08:28:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:04,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:04,900 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:04,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:28:04,901 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1322246835, now seen corresponding path program 1 times [2022-07-12 08:28:04,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:04,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236533877] [2022-07-12 08:28:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:04,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:04,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:04,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:04,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236533877] [2022-07-12 08:28:04,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236533877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:04,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:04,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:04,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932194479] [2022-07-12 08:28:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:04,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:04,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:04,999 INFO L87 Difference]: Start difference. First operand 2640 states and 4747 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:05,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:05,978 INFO L93 Difference]: Finished difference Result 3755 states and 6481 transitions. [2022-07-12 08:28:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:28:05,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:05,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:05,989 INFO L225 Difference]: With dead ends: 3755 [2022-07-12 08:28:05,989 INFO L226 Difference]: Without dead ends: 3248 [2022-07-12 08:28:05,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:28:05,992 INFO L413 NwaCegarLoop]: 4290 mSDtfsCounter, 4649 mSDsluCounter, 16457 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 20747 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:05,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 20747 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:28:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2022-07-12 08:28:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2965. [2022-07-12 08:28:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2857 states have (on average 1.7798389919495974) internal successors, (5085), 2864 states have internal predecessors, (5085), 72 states have call successors, (72), 31 states have call predecessors, (72), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2022-07-12 08:28:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 5240 transitions. [2022-07-12 08:28:06,067 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 5240 transitions. Word has length 91 [2022-07-12 08:28:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:06,072 INFO L495 AbstractCegarLoop]: Abstraction has 2965 states and 5240 transitions. [2022-07-12 08:28:06,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 5240 transitions. [2022-07-12 08:28:06,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:06,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:06,082 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:06,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:28:06,082 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash -2085497615, now seen corresponding path program 1 times [2022-07-12 08:28:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:06,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989805568] [2022-07-12 08:28:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:06,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:06,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:06,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:06,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:06,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:06,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989805568] [2022-07-12 08:28:06,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989805568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:06,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:06,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474171860] [2022-07-12 08:28:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:06,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:06,180 INFO L87 Difference]: Start difference. First operand 2965 states and 5240 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:07,252 INFO L93 Difference]: Finished difference Result 4900 states and 8238 transitions. [2022-07-12 08:28:07,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:28:07,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:07,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:07,293 INFO L225 Difference]: With dead ends: 4900 [2022-07-12 08:28:07,293 INFO L226 Difference]: Without dead ends: 4068 [2022-07-12 08:28:07,297 INFO L412 NwaCegarLoop]: 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 [2022-07-12 08:28:07,298 INFO L413 NwaCegarLoop]: 4401 mSDtfsCounter, 4597 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4608 SdHoareTripleChecker+Valid, 21164 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:07,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4608 Valid, 21164 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:28:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2022-07-12 08:28:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 3616. [2022-07-12 08:28:07,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3616 states, 3428 states have (on average 1.735997666277713) internal successors, (5951), 3439 states have internal predecessors, (5951), 124 states have call successors, (124), 55 states have call predecessors, (124), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2022-07-12 08:28:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3616 states to 3616 states and 6232 transitions. [2022-07-12 08:28:07,386 INFO L78 Accepts]: Start accepts. Automaton has 3616 states and 6232 transitions. Word has length 91 [2022-07-12 08:28:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:07,386 INFO L495 AbstractCegarLoop]: Abstraction has 3616 states and 6232 transitions. [2022-07-12 08:28:07,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:07,387 INFO L276 IsEmpty]: Start isEmpty. Operand 3616 states and 6232 transitions. [2022-07-12 08:28:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:07,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:07,388 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:07,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:28:07,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:07,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash 298427123, now seen corresponding path program 1 times [2022-07-12 08:28:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:07,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052333516] [2022-07-12 08:28:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:07,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:07,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:07,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052333516] [2022-07-12 08:28:07,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052333516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:07,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:07,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446286308] [2022-07-12 08:28:07,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:07,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:07,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:07,462 INFO L87 Difference]: Start difference. First operand 3616 states and 6232 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:08,590 INFO L93 Difference]: Finished difference Result 7702 states and 12526 transitions. [2022-07-12 08:28:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:28:08,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:08,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:08,613 INFO L225 Difference]: With dead ends: 7702 [2022-07-12 08:28:08,613 INFO L226 Difference]: Without dead ends: 6219 [2022-07-12 08:28:08,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:28:08,620 INFO L413 NwaCegarLoop]: 4391 mSDtfsCounter, 4766 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4782 SdHoareTripleChecker+Valid, 21146 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:08,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4782 Valid, 21146 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:28:08,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2022-07-12 08:28:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 4908. [2022-07-12 08:28:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4568 states have (on average 1.6836690017513134) internal successors, (7691), 4587 states have internal predecessors, (7691), 220 states have call successors, (220), 103 states have call predecessors, (220), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2022-07-12 08:28:08,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 8226 transitions. [2022-07-12 08:28:08,770 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 8226 transitions. Word has length 91 [2022-07-12 08:28:08,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:08,771 INFO L495 AbstractCegarLoop]: Abstraction has 4908 states and 8226 transitions. [2022-07-12 08:28:08,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 8226 transitions. [2022-07-12 08:28:08,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:08,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:08,774 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:08,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:28:08,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:08,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:08,775 INFO L85 PathProgramCache]: Analyzing trace with hash -668923531, now seen corresponding path program 1 times [2022-07-12 08:28:08,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:08,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015180828] [2022-07-12 08:28:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:08,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:08,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:08,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:08,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015180828] [2022-07-12 08:28:08,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015180828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:08,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:08,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:08,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021306140] [2022-07-12 08:28:08,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:08,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:08,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:08,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:08,853 INFO L87 Difference]: Start difference. First operand 4908 states and 8226 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:10,238 INFO L93 Difference]: Finished difference Result 12540 states and 20022 transitions. [2022-07-12 08:28:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:28:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:10,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:10,280 INFO L225 Difference]: With dead ends: 12540 [2022-07-12 08:28:10,280 INFO L226 Difference]: Without dead ends: 9765 [2022-07-12 08:28:10,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:28:10,292 INFO L413 NwaCegarLoop]: 4445 mSDtfsCounter, 4623 mSDsluCounter, 16752 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4633 SdHoareTripleChecker+Valid, 21197 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:10,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4633 Valid, 21197 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:28:10,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9765 states. [2022-07-12 08:28:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9765 to 7321. [2022-07-12 08:28:10,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7321 states, 6685 states have (on average 1.6282722513089005) internal successors, (10885), 6720 states have internal predecessors, (10885), 404 states have call successors, (404), 199 states have call predecessors, (404), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2022-07-12 08:28:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7321 states to 7321 states and 11966 transitions. [2022-07-12 08:28:10,595 INFO L78 Accepts]: Start accepts. Automaton has 7321 states and 11966 transitions. Word has length 91 [2022-07-12 08:28:10,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:10,596 INFO L495 AbstractCegarLoop]: Abstraction has 7321 states and 11966 transitions. [2022-07-12 08:28:10,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:10,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7321 states and 11966 transitions. [2022-07-12 08:28:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:10,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:10,601 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:10,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:28:10,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1239534259, now seen corresponding path program 1 times [2022-07-12 08:28:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:10,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286443266] [2022-07-12 08:28:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:10,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:10,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:10,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286443266] [2022-07-12 08:28:10,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286443266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:10,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:10,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551527009] [2022-07-12 08:28:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:10,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:10,695 INFO L87 Difference]: Start difference. First operand 7321 states and 11966 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:12,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:12,262 INFO L93 Difference]: Finished difference Result 21439 states and 33876 transitions. [2022-07-12 08:28:12,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:28:12,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:12,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:12,325 INFO L225 Difference]: With dead ends: 21439 [2022-07-12 08:28:12,325 INFO L226 Difference]: Without dead ends: 16251 [2022-07-12 08:28:12,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:28:12,343 INFO L413 NwaCegarLoop]: 4381 mSDtfsCounter, 4686 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 21136 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:12,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 21136 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:28:12,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16251 states. [2022-07-12 08:28:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16251 to 12290. [2022-07-12 08:28:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12290 states, 11078 states have (on average 1.5864777035565987) internal successors, (17575), 11145 states have internal predecessors, (17575), 756 states have call successors, (756), 391 states have call predecessors, (756), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2022-07-12 08:28:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12290 states to 12290 states and 19878 transitions. [2022-07-12 08:28:12,756 INFO L78 Accepts]: Start accepts. Automaton has 12290 states and 19878 transitions. Word has length 91 [2022-07-12 08:28:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:12,757 INFO L495 AbstractCegarLoop]: Abstraction has 12290 states and 19878 transitions. [2022-07-12 08:28:12,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 12290 states and 19878 transitions. [2022-07-12 08:28:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:12,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:12,764 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:12,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:28:12,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:12,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash 746908085, now seen corresponding path program 1 times [2022-07-12 08:28:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:12,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510594665] [2022-07-12 08:28:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:12,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:12,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:12,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:12,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:12,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:12,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:12,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510594665] [2022-07-12 08:28:12,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510594665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:12,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:12,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:12,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547152043] [2022-07-12 08:28:12,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:12,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:12,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:12,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:12,835 INFO L87 Difference]: Start difference. First operand 12290 states and 19878 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:14,870 INFO L93 Difference]: Finished difference Result 39094 states and 62122 transitions. [2022-07-12 08:28:14,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:28:14,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:14,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:14,974 INFO L225 Difference]: With dead ends: 39094 [2022-07-12 08:28:14,974 INFO L226 Difference]: Without dead ends: 28937 [2022-07-12 08:28:15,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:28:15,019 INFO L413 NwaCegarLoop]: 4376 mSDtfsCounter, 4646 mSDsluCounter, 16755 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4662 SdHoareTripleChecker+Valid, 21131 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:15,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4662 Valid, 21131 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 08:28:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28937 states. [2022-07-12 08:28:15,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28937 to 22195. [2022-07-12 08:28:15,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22195 states, 19863 states have (on average 1.5599355585762473) internal successors, (30985), 19994 states have internal predecessors, (30985), 1428 states have call successors, (1428), 775 states have call predecessors, (1428), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2022-07-12 08:28:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22195 states to 22195 states and 36154 transitions. [2022-07-12 08:28:15,930 INFO L78 Accepts]: Start accepts. Automaton has 22195 states and 36154 transitions. Word has length 91 [2022-07-12 08:28:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:15,930 INFO L495 AbstractCegarLoop]: Abstraction has 22195 states and 36154 transitions. [2022-07-12 08:28:15,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 22195 states and 36154 transitions. [2022-07-12 08:28:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:15,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:15,944 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:15,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:28:15,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1700848243, now seen corresponding path program 1 times [2022-07-12 08:28:15,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:15,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864513724] [2022-07-12 08:28:15,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:15,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:15,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:15,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864513724] [2022-07-12 08:28:15,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864513724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:15,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:16,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:28:16,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459858197] [2022-07-12 08:28:16,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:16,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:28:16,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:28:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:28:16,001 INFO L87 Difference]: Start difference. First operand 22195 states and 36154 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:19,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:19,249 INFO L93 Difference]: Finished difference Result 73149 states and 118600 transitions. [2022-07-12 08:28:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 08:28:19,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:19,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:19,489 INFO L225 Difference]: With dead ends: 73149 [2022-07-12 08:28:19,490 INFO L226 Difference]: Without dead ends: 53087 [2022-07-12 08:28:19,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 08:28:19,539 INFO L413 NwaCegarLoop]: 4377 mSDtfsCounter, 4591 mSDsluCounter, 16740 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 21117 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:19,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4601 Valid, 21117 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:28:19,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53087 states. [2022-07-12 08:28:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53087 to 41916. [2022-07-12 08:28:21,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41916 states, 37424 states have (on average 1.546039974348012) internal successors, (57859), 37683 states have internal predecessors, (57859), 2700 states have call successors, (2700), 1535 states have call predecessors, (2700), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2022-07-12 08:28:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41916 states to 41916 states and 70074 transitions. [2022-07-12 08:28:21,407 INFO L78 Accepts]: Start accepts. Automaton has 41916 states and 70074 transitions. Word has length 91 [2022-07-12 08:28:21,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:21,408 INFO L495 AbstractCegarLoop]: Abstraction has 41916 states and 70074 transitions. [2022-07-12 08:28:21,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 41916 states and 70074 transitions. [2022-07-12 08:28:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 08:28:21,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:21,436 INFO L195 NwaCegarLoop]: 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] [2022-07-12 08:28:21,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:28:21,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:21,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 484694517, now seen corresponding path program 1 times [2022-07-12 08:28:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:21,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910357723] [2022-07-12 08:28:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:21,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:21,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:21,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:21,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:28:21,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:21,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910357723] [2022-07-12 08:28:21,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910357723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:21,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:28:21,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:28:21,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365907807] [2022-07-12 08:28:21,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:21,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:28:21,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:21,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:28:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:28:21,503 INFO L87 Difference]: Start difference. First operand 41916 states and 70074 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:25,823 INFO L93 Difference]: Finished difference Result 114784 states and 187983 transitions. [2022-07-12 08:28:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:28:25,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 91 [2022-07-12 08:28:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:26,068 INFO L225 Difference]: With dead ends: 114784 [2022-07-12 08:28:26,068 INFO L226 Difference]: Without dead ends: 75002 [2022-07-12 08:28:26,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-12 08:28:26,165 INFO L413 NwaCegarLoop]: 4487 mSDtfsCounter, 4788 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 16926 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:26,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4817 Valid, 16926 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 08:28:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75002 states. [2022-07-12 08:28:29,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75002 to 61307. [2022-07-12 08:28:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61307 states, 54491 states have (on average 1.5260501734231342) internal successors, (83156), 55007 states have internal predecessors, (83156), 4122 states have call successors, (4122), 2309 states have call predecessors, (4122), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2022-07-12 08:28:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61307 states to 61307 states and 100403 transitions. [2022-07-12 08:28:29,258 INFO L78 Accepts]: Start accepts. Automaton has 61307 states and 100403 transitions. Word has length 91 [2022-07-12 08:28:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:29,258 INFO L495 AbstractCegarLoop]: Abstraction has 61307 states and 100403 transitions. [2022-07-12 08:28:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:28:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 61307 states and 100403 transitions. [2022-07-12 08:28:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 08:28:29,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:29,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:28:29,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:28:29,359 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:29,359 INFO L85 PathProgramCache]: Analyzing trace with hash -908289339, now seen corresponding path program 1 times [2022-07-12 08:28:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:29,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792847092] [2022-07-12 08:28:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 08:28:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:28:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 08:28:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:28:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:29,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792847092] [2022-07-12 08:28:29,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792847092] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:28:29,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224297442] [2022-07-12 08:28:29,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:29,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:28:29,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:28:29,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:28:29,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 08:28:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:29,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:28:29,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:28:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 08:28:29,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:28:29,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224297442] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:29,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:28:29,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:28:29,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195020095] [2022-07-12 08:28:29,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:29,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:28:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:29,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:28:29,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:28:29,640 INFO L87 Difference]: Start difference. First operand 61307 states and 100403 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:28:34,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:28:34,155 INFO L93 Difference]: Finished difference Result 178274 states and 292637 transitions. [2022-07-12 08:28:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 08:28:34,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-07-12 08:28:34,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:28:34,601 INFO L225 Difference]: With dead ends: 178274 [2022-07-12 08:28:34,601 INFO L226 Difference]: Without dead ends: 119101 [2022-07-12 08:28:34,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:28:34,748 INFO L413 NwaCegarLoop]: 4245 mSDtfsCounter, 4185 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:28:34,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 4494 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 08:28:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119101 states. [2022-07-12 08:28:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119101 to 118325. [2022-07-12 08:28:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118325 states, 104911 states have (on average 1.5178675258075893) internal successors, (159241), 105940 states have internal predecessors, (159241), 8036 states have call successors, (8036), 4609 states have call predecessors, (8036), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2022-07-12 08:28:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118325 states to 118325 states and 193066 transitions. [2022-07-12 08:28:40,897 INFO L78 Accepts]: Start accepts. Automaton has 118325 states and 193066 transitions. Word has length 147 [2022-07-12 08:28:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:28:40,897 INFO L495 AbstractCegarLoop]: Abstraction has 118325 states and 193066 transitions. [2022-07-12 08:28:40,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 08:28:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 118325 states and 193066 transitions. [2022-07-12 08:28:41,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 08:28:41,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:28:41,151 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:28:41,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 08:28:41,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 08:28:41,368 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:28:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:28:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1311563429, now seen corresponding path program 1 times [2022-07-12 08:28:41,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:28:41,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076831926] [2022-07-12 08:28:41,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:41,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:28:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:28:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 08:28:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 08:28:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 08:28:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 08:28:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 08:28:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-12 08:28:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 08:28:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,497 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-12 08:28:41,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:28:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076831926] [2022-07-12 08:28:41,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076831926] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 08:28:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295694773] [2022-07-12 08:28:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:28:41,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 08:28:41,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:28:41,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 08:28:41,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 08:28:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:28:41,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 08:28:41,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 08:28:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 08:28:41,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 08:28:41,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295694773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:28:41,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 08:28:41,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-12 08:28:41,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52884714] [2022-07-12 08:28:41,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:28:41,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 08:28:41,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:28:41,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 08:28:41,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:28:41,692 INFO L87 Difference]: Start difference. First operand 118325 states and 193066 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)