./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_label41+token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1937875315099b80c98271a1c221b9887fc0d74aa97933e0962b57c2a2a9f37a --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:37:59,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:37:59,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:37:59,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:37:59,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:37:59,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:37:59,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:37:59,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:37:59,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:37:59,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:37:59,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:37:59,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:37:59,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:37:59,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:37:59,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:37:59,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:37:59,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:37:59,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:37:59,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:37:59,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:37:59,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:37:59,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:37:59,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:37:59,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:37:59,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:37:59,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:37:59,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:37:59,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:37:59,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:37:59,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:37:59,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:37:59,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:37:59,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:37:59,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:37:59,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:37:59,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:37:59,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:37:59,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:37:59,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:37:59,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:37:59,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:37:59,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:37:59,311 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:37:59,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:37:59,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:37:59,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:37:59,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:37:59,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:37:59,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:37:59,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:37:59,314 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:37:59,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:37:59,315 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:37:59,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:37:59,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:37:59,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:37:59,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:37:59,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:37:59,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:37:59,316 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:37:59,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:37:59,317 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:37:59,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:37:59,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:37:59,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:37:59,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:37:59,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:37:59,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:37:59,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:37:59,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:37:59,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:37:59,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:37:59,319 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:37:59,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:37:59,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:37:59,320 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:37:59,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1937875315099b80c98271a1c221b9887fc0d74aa97933e0962b57c2a2a9f37a [2021-12-14 15:37:59,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:37:59,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:37:59,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:37:59,586 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:37:59,587 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:37:59,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c [2021-12-14 15:37:59,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec8467c4/212d00e0a8e04cdfbe4a8446b2854907/FLAG2d8736b76 [2021-12-14 15:38:00,471 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:38:00,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c [2021-12-14 15:38:00,509 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec8467c4/212d00e0a8e04cdfbe4a8446b2854907/FLAG2d8736b76 [2021-12-14 15:38:00,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dec8467c4/212d00e0a8e04cdfbe4a8446b2854907 [2021-12-14 15:38:00,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:38:00,672 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:38:00,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:38:00,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:38:00,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:38:00,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:00,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c351f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:00, skipping insertion in model container [2021-12-14 15:38:00,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:38:00" (1/1) ... [2021-12-14 15:38:00,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:38:00,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:38:02,263 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_label41+token_ring.07.cil-1.c[376251,376264] [2021-12-14 15:38:02,289 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_label41+token_ring.07.cil-1.c[383339,383352] [2021-12-14 15:38:02,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:02,481 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:38:03,229 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_label41+token_ring.07.cil-1.c[376251,376264] [2021-12-14 15:38:03,237 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_label41+token_ring.07.cil-1.c[383339,383352] [2021-12-14 15:38:03,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:03,319 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:38:03,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03 WrapperNode [2021-12-14 15:38:03,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:38:03,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:03,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:38:03,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:38:03,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:03,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:03,821 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-14 15:38:03,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:03,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:38:03,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:38:03,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:38:03,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:03,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:03,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:03,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:04,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:04,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:04,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:04,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:38:04,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:38:04,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:38:04,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:38:04,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (1/1) ... [2021-12-14 15:38:04,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:38:04,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:38:04,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 15:38:04,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 15:38:04,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:38:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:38:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:38:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:38:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:38:04,491 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:38:04,491 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:38:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:38:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:38:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:38:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:38:04,492 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:38:04,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:38:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:38:04,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:38:04,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:38:04,669 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:38:04,670 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:38:10,490 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:38:10,520 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:38:10,520 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-14 15:38:10,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:10 BoogieIcfgContainer [2021-12-14 15:38:10,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:38:10,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:38:10,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:38:10,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:38:10,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:38:00" (1/3) ... [2021-12-14 15:38:10,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db22148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:10, skipping insertion in model container [2021-12-14 15:38:10,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:03" (2/3) ... [2021-12-14 15:38:10,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db22148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:10, skipping insertion in model container [2021-12-14 15:38:10,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:10" (3/3) ... [2021-12-14 15:38:10,532 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.07.cil-1.c [2021-12-14 15:38:10,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:38:10,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:38:10,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:38:10,590 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:38:10,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:38:10,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-14 15:38:10,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:10,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:10,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:10,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:10,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-14 15:38:10,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:10,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234361901] [2021-12-14 15:38:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:10,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:10,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:10,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:11,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:11,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234361901] [2021-12-14 15:38:11,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234361901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:11,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:11,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:38:11,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203996607] [2021-12-14 15:38:11,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:11,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:38:11,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:11,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:38:11,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:38:11,097 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:12,159 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-14 15:38:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:38:12,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:12,190 INFO L225 Difference]: With dead ends: 4955 [2021-12-14 15:38:12,191 INFO L226 Difference]: Without dead ends: 2460 [2021-12-14 15:38:12,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:38:12,206 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:12,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:38:12,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-14 15:38:12,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-14 15:38:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-14 15:38:12,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-14 15:38:12,419 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-14 15:38:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:12,420 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-14 15:38:12,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-14 15:38:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:12,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:12,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:12,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:38:12,425 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:12,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-14 15:38:12,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:12,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915240620] [2021-12-14 15:38:12,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:12,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:12,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:12,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:12,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915240620] [2021-12-14 15:38:12,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915240620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:12,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:12,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:38:12,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234466782] [2021-12-14 15:38:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:12,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:38:12,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:12,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:38:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:38:12,617 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:14,297 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-14 15:38:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:38:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:14,312 INFO L225 Difference]: With dead ends: 3029 [2021-12-14 15:38:14,312 INFO L226 Difference]: Without dead ends: 2792 [2021-12-14 15:38:14,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:14,316 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:14,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:38:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-14 15:38:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-14 15:38:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-14 15:38:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-14 15:38:14,394 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-14 15:38:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:14,395 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-14 15:38:14,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-14 15:38:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:14,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:14,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:14,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:38:14,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-14 15:38:14,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279660746] [2021-12-14 15:38:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:14,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:14,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:14,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:14,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279660746] [2021-12-14 15:38:14,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279660746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:14,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:14,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:14,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659801745] [2021-12-14 15:38:14,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:14,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:14,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:14,565 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:15,581 INFO L93 Difference]: Finished difference Result 3287 states and 5804 transitions. [2021-12-14 15:38:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:15,593 INFO L225 Difference]: With dead ends: 3287 [2021-12-14 15:38:15,593 INFO L226 Difference]: Without dead ends: 2804 [2021-12-14 15:38:15,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:15,596 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4771 mSDsluCounter, 12358 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16729 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:15,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 16729 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:38:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-12-14 15:38:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2619. [2021-12-14 15:38:15,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8130112972341255) internal successors, (4654), 2570 states have internal predecessors, (4654), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-14 15:38:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4731 transitions. [2021-12-14 15:38:15,666 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4731 transitions. Word has length 123 [2021-12-14 15:38:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:15,667 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4731 transitions. [2021-12-14 15:38:15,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4731 transitions. [2021-12-14 15:38:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:15,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:15,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:15,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:38:15,670 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:15,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:15,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-14 15:38:15,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:15,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335211487] [2021-12-14 15:38:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:15,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:15,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:15,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335211487] [2021-12-14 15:38:15,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335211487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:15,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:15,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:15,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309152383] [2021-12-14 15:38:15,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:15,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:15,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:15,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:15,805 INFO L87 Difference]: Start difference. First operand 2619 states and 4731 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:17,758 INFO L93 Difference]: Finished difference Result 3613 states and 6309 transitions. [2021-12-14 15:38:17,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:17,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:17,776 INFO L225 Difference]: With dead ends: 3613 [2021-12-14 15:38:17,777 INFO L226 Difference]: Without dead ends: 3130 [2021-12-14 15:38:17,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:17,790 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 4935 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:17,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 21717 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:38:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2021-12-14 15:38:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2848. [2021-12-14 15:38:17,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7922827262892174) internal successors, (4970), 2777 states have internal predecessors, (4970), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-14 15:38:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5081 transitions. [2021-12-14 15:38:17,909 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5081 transitions. Word has length 123 [2021-12-14 15:38:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:17,910 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5081 transitions. [2021-12-14 15:38:17,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5081 transitions. [2021-12-14 15:38:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:17,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:17,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:17,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:38:17,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:17,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:17,921 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-14 15:38:17,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:17,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457957957] [2021-12-14 15:38:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:17,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:18,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:18,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457957957] [2021-12-14 15:38:18,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457957957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:18,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:18,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:18,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896372743] [2021-12-14 15:38:18,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:18,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:18,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:18,054 INFO L87 Difference]: Start difference. First operand 2848 states and 5081 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:20,082 INFO L93 Difference]: Finished difference Result 4476 states and 7659 transitions. [2021-12-14 15:38:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:20,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:20,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:20,099 INFO L225 Difference]: With dead ends: 4476 [2021-12-14 15:38:20,099 INFO L226 Difference]: Without dead ends: 3764 [2021-12-14 15:38:20,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:20,103 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21705 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:20,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21705 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:38:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-12-14 15:38:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3308. [2021-12-14 15:38:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3187 states have (on average 1.7587072481957955) internal successors, (5605), 3193 states have internal predecessors, (5605), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-14 15:38:20,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 5788 transitions. [2021-12-14 15:38:20,232 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 5788 transitions. Word has length 123 [2021-12-14 15:38:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:20,232 INFO L470 AbstractCegarLoop]: Abstraction has 3308 states and 5788 transitions. [2021-12-14 15:38:20,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 5788 transitions. [2021-12-14 15:38:20,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:20,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:20,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:20,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:38:20,236 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:20,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-14 15:38:20,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:20,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986756503] [2021-12-14 15:38:20,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:20,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:20,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:20,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:20,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:20,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:20,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986756503] [2021-12-14 15:38:20,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986756503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:20,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:20,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:20,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445611282] [2021-12-14 15:38:20,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:20,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:20,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:20,378 INFO L87 Difference]: Start difference. First operand 3308 states and 5788 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:22,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:22,268 INFO L93 Difference]: Finished difference Result 6142 states and 10254 transitions. [2021-12-14 15:38:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:22,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:22,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:22,291 INFO L225 Difference]: With dead ends: 6142 [2021-12-14 15:38:22,291 INFO L226 Difference]: Without dead ends: 4970 [2021-12-14 15:38:22,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:22,297 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 4928 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4942 SdHoareTripleChecker+Valid, 21701 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:22,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4942 Valid, 21701 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:22,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-12-14 15:38:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4230. [2021-12-14 15:38:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.7119741100323624) internal successors, (6877), 4027 states have internal predecessors, (6877), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-14 15:38:22,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7210 transitions. [2021-12-14 15:38:22,480 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7210 transitions. Word has length 123 [2021-12-14 15:38:22,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:22,481 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7210 transitions. [2021-12-14 15:38:22,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7210 transitions. [2021-12-14 15:38:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:22,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:22,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:22,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:38:22,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:22,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:22,485 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-14 15:38:22,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:22,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571484023] [2021-12-14 15:38:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:22,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:22,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571484023] [2021-12-14 15:38:22,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571484023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:22,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:22,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:22,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844556656] [2021-12-14 15:38:22,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:22,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:22,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:22,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:22,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:22,589 INFO L87 Difference]: Start difference. First operand 4230 states and 7210 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:23,573 INFO L93 Difference]: Finished difference Result 7076 states and 11725 transitions. [2021-12-14 15:38:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:23,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:23,610 INFO L225 Difference]: With dead ends: 7076 [2021-12-14 15:38:23,613 INFO L226 Difference]: Without dead ends: 4982 [2021-12-14 15:38:23,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:23,622 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4774 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 16711 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:23,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 16711 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:38:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2021-12-14 15:38:23,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4230. [2021-12-14 15:38:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.709733632063729) internal successors, (6868), 4027 states have internal predecessors, (6868), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-14 15:38:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7201 transitions. [2021-12-14 15:38:23,775 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7201 transitions. Word has length 123 [2021-12-14 15:38:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:23,775 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7201 transitions. [2021-12-14 15:38:23,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7201 transitions. [2021-12-14 15:38:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:23,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:23,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:23,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:38:23,779 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-14 15:38:23,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:23,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099097909] [2021-12-14 15:38:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:23,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:23,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:23,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099097909] [2021-12-14 15:38:23,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099097909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:23,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:23,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:23,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117729105] [2021-12-14 15:38:23,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:23,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:23,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:23,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:23,909 INFO L87 Difference]: Start difference. First operand 4230 states and 7201 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:24,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:24,878 INFO L93 Difference]: Finished difference Result 7056 states and 11659 transitions. [2021-12-14 15:38:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:24,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:24,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:24,896 INFO L225 Difference]: With dead ends: 7056 [2021-12-14 15:38:24,897 INFO L226 Difference]: Without dead ends: 4962 [2021-12-14 15:38:24,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:24,905 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 4664 mSDsluCounter, 16444 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 20792 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:24,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 20792 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:38:24,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-12-14 15:38:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4230. [2021-12-14 15:38:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.707493154095096) internal successors, (6859), 4027 states have internal predecessors, (6859), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-14 15:38:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7192 transitions. [2021-12-14 15:38:25,049 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7192 transitions. Word has length 123 [2021-12-14 15:38:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:25,049 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7192 transitions. [2021-12-14 15:38:25,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:25,049 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7192 transitions. [2021-12-14 15:38:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:25,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:25,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:25,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:38:25,052 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-14 15:38:25,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:25,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205910243] [2021-12-14 15:38:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:25,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:25,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:25,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:25,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205910243] [2021-12-14 15:38:25,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205910243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:25,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:25,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:25,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295752313] [2021-12-14 15:38:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:25,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:25,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:25,180 INFO L87 Difference]: Start difference. First operand 4230 states and 7192 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:27,295 INFO L93 Difference]: Finished difference Result 10300 states and 16616 transitions. [2021-12-14 15:38:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:27,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:27,331 INFO L225 Difference]: With dead ends: 10300 [2021-12-14 15:38:27,332 INFO L226 Difference]: Without dead ends: 8206 [2021-12-14 15:38:27,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:27,343 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 5202 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5224 SdHoareTripleChecker+Valid, 21669 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:27,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5224 Valid, 21669 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:27,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2021-12-14 15:38:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 6082. [2021-12-14 15:38:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 5693 states have (on average 1.6539610047426665) internal successors, (9416), 5711 states have internal predecessors, (9416), 269 states have call successors, (269), 102 states have call predecessors, (269), 118 states have return successors, (366), 284 states have call predecessors, (366), 269 states have call successors, (366) [2021-12-14 15:38:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 10051 transitions. [2021-12-14 15:38:27,698 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 10051 transitions. Word has length 123 [2021-12-14 15:38:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:27,698 INFO L470 AbstractCegarLoop]: Abstraction has 6082 states and 10051 transitions. [2021-12-14 15:38:27,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 10051 transitions. [2021-12-14 15:38:27,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:27,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:27,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:27,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:38:27,703 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:27,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-14 15:38:27,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:27,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627477537] [2021-12-14 15:38:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:27,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:27,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:27,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627477537] [2021-12-14 15:38:27,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627477537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:27,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:27,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:27,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331775447] [2021-12-14 15:38:27,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:27,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:27,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:27,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:27,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:27,797 INFO L87 Difference]: Start difference. First operand 6082 states and 10051 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:30,245 INFO L93 Difference]: Finished difference Result 17558 states and 27899 transitions. [2021-12-14 15:38:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:30,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:30,308 INFO L225 Difference]: With dead ends: 17558 [2021-12-14 15:38:30,308 INFO L226 Difference]: Without dead ends: 13612 [2021-12-14 15:38:30,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:30,329 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 4972 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 21768 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:30,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 21768 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:38:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13612 states. [2021-12-14 15:38:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13612 to 9691. [2021-12-14 15:38:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9691 states, 8958 states have (on average 1.6070551462379996) internal successors, (14396), 8992 states have internal predecessors, (14396), 501 states have call successors, (501), 198 states have call predecessors, (501), 230 states have return successors, (776), 532 states have call predecessors, (776), 501 states have call successors, (776) [2021-12-14 15:38:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 15673 transitions. [2021-12-14 15:38:30,850 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 15673 transitions. Word has length 123 [2021-12-14 15:38:30,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:30,850 INFO L470 AbstractCegarLoop]: Abstraction has 9691 states and 15673 transitions. [2021-12-14 15:38:30,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:30,850 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 15673 transitions. [2021-12-14 15:38:30,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:30,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:30,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:30,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:38:30,857 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:30,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-14 15:38:30,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:30,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202500844] [2021-12-14 15:38:30,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:30,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:30,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:30,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:30,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:30,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202500844] [2021-12-14 15:38:30,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202500844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:30,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:30,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:30,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553196522] [2021-12-14 15:38:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:30,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:30,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:30,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:30,974 INFO L87 Difference]: Start difference. First operand 9691 states and 15673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:33,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:33,866 INFO L93 Difference]: Finished difference Result 31533 states and 49799 transitions. [2021-12-14 15:38:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:33,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:33,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:33,954 INFO L225 Difference]: With dead ends: 31533 [2021-12-14 15:38:33,954 INFO L226 Difference]: Without dead ends: 23978 [2021-12-14 15:38:33,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:33,985 INFO L933 BasicCegarLoop]: 4555 mSDtfsCounter, 5122 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 21659 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:33,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5144 Valid, 21659 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23978 states. [2021-12-14 15:38:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23978 to 16972. [2021-12-14 15:38:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16972 states, 15567 states have (on average 1.5737136249759105) internal successors, (24498), 15633 states have internal predecessors, (24498), 949 states have call successors, (949), 390 states have call predecessors, (949), 454 states have return successors, (1742), 1012 states have call predecessors, (1742), 949 states have call successors, (1742) [2021-12-14 15:38:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 27189 transitions. [2021-12-14 15:38:34,803 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 27189 transitions. Word has length 123 [2021-12-14 15:38:34,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:34,803 INFO L470 AbstractCegarLoop]: Abstraction has 16972 states and 27189 transitions. [2021-12-14 15:38:34,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:34,804 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 27189 transitions. [2021-12-14 15:38:34,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:34,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:34,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:34,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:38:34,814 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:34,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-14 15:38:34,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:34,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013261658] [2021-12-14 15:38:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:34,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:34,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:34,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013261658] [2021-12-14 15:38:34,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013261658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:34,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:34,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:34,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89503655] [2021-12-14 15:38:34,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:34,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:34,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:34,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:34,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:34,913 INFO L87 Difference]: Start difference. First operand 16972 states and 27189 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:38,832 INFO L93 Difference]: Finished difference Result 59100 states and 93657 transitions. [2021-12-14 15:38:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:38,979 INFO L225 Difference]: With dead ends: 59100 [2021-12-14 15:38:38,980 INFO L226 Difference]: Without dead ends: 44264 [2021-12-14 15:38:39,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:39,034 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 5082 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5104 SdHoareTripleChecker+Valid, 21654 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:39,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5104 Valid, 21654 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:38:39,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44264 states. [2021-12-14 15:38:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44264 to 31501. [2021-12-14 15:38:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31501 states, 28784 states have (on average 1.5540578098943858) internal successors, (44732), 28914 states have internal predecessors, (44732), 1813 states have call successors, (1813), 774 states have call predecessors, (1813), 902 states have return successors, (4128), 1940 states have call predecessors, (4128), 1813 states have call successors, (4128) [2021-12-14 15:38:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31501 states to 31501 states and 50673 transitions. [2021-12-14 15:38:40,693 INFO L78 Accepts]: Start accepts. Automaton has 31501 states and 50673 transitions. Word has length 123 [2021-12-14 15:38:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:40,693 INFO L470 AbstractCegarLoop]: Abstraction has 31501 states and 50673 transitions. [2021-12-14 15:38:40,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 31501 states and 50673 transitions. [2021-12-14 15:38:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:38:40,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:40,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:38:40,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:38:40,713 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:40,713 INFO L85 PathProgramCache]: Analyzing trace with hash 815896172, now seen corresponding path program 1 times [2021-12-14 15:38:40,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:40,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948268539] [2021-12-14 15:38:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:40,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:38:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:38:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:38:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:38:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:40,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:40,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948268539] [2021-12-14 15:38:40,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948268539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:40,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:40,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:40,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149424547] [2021-12-14 15:38:40,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:40,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:40,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:40,808 INFO L87 Difference]: Start difference. First operand 31501 states and 50673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:47,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:47,074 INFO L93 Difference]: Finished difference Result 113051 states and 181431 transitions. [2021-12-14 15:38:47,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:47,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:38:47,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:47,559 INFO L225 Difference]: With dead ends: 113051 [2021-12-14 15:38:47,560 INFO L226 Difference]: Without dead ends: 83686 [2021-12-14 15:38:47,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:47,627 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 4940 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 21709 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:47,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 21709 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:38:47,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83686 states.