./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f02c38ef7caa0913e815c21ae4fcfcf6b07193a4f02fe1bf68067d0ca7ac604d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:55:51,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:55:51,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:55:51,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:55:51,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:55:51,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:55:51,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:55:51,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:55:51,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:55:51,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:55:51,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:55:51,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:55:51,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:55:51,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:55:51,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:55:51,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:55:51,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:55:51,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:55:51,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:55:51,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:55:51,484 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:55:51,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:55:51,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:55:51,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:55:51,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:55:51,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:55:51,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:55:51,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:55:51,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:55:51,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:55:51,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:55:51,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:55:51,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:55:51,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:55:51,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:55:51,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:55:51,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:55:51,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:55:51,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:55:51,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:55:51,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:55:51,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:55:51,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:55:51,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:55:51,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:55:51,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:55:51,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:55:51,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:55:51,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:55:51,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:55:51,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:55:51,525 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:55:51,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:55:51,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:55:51,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:55:51,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:55:51,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:55:51,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:55:51,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:55:51,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:55:51,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:55:51,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:55:51,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:55:51,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:55:51,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:55:51,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:55:51,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:55:51,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:55:51,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:55:51,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:55:51,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:55:51,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:55:51,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:55:51,530 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:55:51,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:55:51,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:55:51,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f02c38ef7caa0913e815c21ae4fcfcf6b07193a4f02fe1bf68067d0ca7ac604d [2022-07-21 06:55:51,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:55:51,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:55:51,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:55:51,896 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:55:51,897 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:55:51,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c [2022-07-21 06:55:51,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3599755/343a854c2b7d49e18cc579ccf37da681/FLAGe325850e1 [2022-07-21 06:55:52,941 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:55:52,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c [2022-07-21 06:55:53,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3599755/343a854c2b7d49e18cc579ccf37da681/FLAGe325850e1 [2022-07-21 06:55:53,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3599755/343a854c2b7d49e18cc579ccf37da681 [2022-07-21 06:55:53,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:55:53,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:55:53,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:55:53,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:55:53,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:55:53,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:55:53" (1/1) ... [2022-07-21 06:55:53,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6c0195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:53, skipping insertion in model container [2022-07-21 06:55:53,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:55:53" (1/1) ... [2022-07-21 06:55:53,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:55:53,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:55:55,207 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[381679,381692] [2022-07-21 06:55:55,231 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[383339,383352] [2022-07-21 06:55:55,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:55:55,561 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:55:56,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[381679,381692] [2022-07-21 06:55:56,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-2.c[383339,383352] [2022-07-21 06:55:56,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:55:56,487 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:55:56,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56 WrapperNode [2022-07-21 06:55:56,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:55:56,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:55:56,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:55:56,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:55:56,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:56,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,063 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2022-07-21 06:55:57,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:55:57,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:55:57,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:55:57,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:55:57,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:55:57,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:55:57,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:55:57,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:55:57,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (1/1) ... [2022-07-21 06:55:57,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:55:57,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:55:57,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 06:55:57,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 06:55:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:55:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 06:55:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 06:55:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 06:55:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 06:55:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 06:55:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 06:55:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 06:55:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 06:55:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 06:55:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 06:55:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 06:55:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 06:55:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:55:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:55:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:55:57,704 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:55:57,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:56:03,861 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:56:03,893 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:56:03,894 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-21 06:56:03,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:56:03 BoogieIcfgContainer [2022-07-21 06:56:03,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:56:03,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:56:03,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:56:03,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:56:03,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:55:53" (1/3) ... [2022-07-21 06:56:03,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c53b942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:56:03, skipping insertion in model container [2022-07-21 06:56:03,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:56" (2/3) ... [2022-07-21 06:56:03,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c53b942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:56:03, skipping insertion in model container [2022-07-21 06:56:03,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:56:03" (3/3) ... [2022-07-21 06:56:03,905 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.11.cil-2.c [2022-07-21 06:56:03,917 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:56:03,917 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 06:56:04,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:56:04,010 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d43bf31, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f9a5989 [2022-07-21 06:56:04,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 06:56:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-21 06:56:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:04,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:04,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:04,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-07-21 06:56:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:04,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286653244] [2022-07-21 06:56:04,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:04,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:04,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:04,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:04,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:04,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286653244] [2022-07-21 06:56:04,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286653244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:04,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:04,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:56:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718712032] [2022-07-21 06:56:04,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:04,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:56:04,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:04,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:56:04,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:56:04,603 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-21 06:56:06,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:06,310 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2022-07-21 06:56:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 06:56:06,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:06,336 INFO L225 Difference]: With dead ends: 5199 [2022-07-21 06:56:06,337 INFO L226 Difference]: Without dead ends: 2604 [2022-07-21 06:56:06,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:56:06,349 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17076 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:06,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 17076 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 06:56:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-07-21 06:56:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2022-07-21 06:56:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-21 06:56:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-07-21 06:56:06,492 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-07-21 06:56:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:06,492 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-07-21 06:56:06,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-21 06:56:06,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-07-21 06:56:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:06,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:06,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:56:06,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:06,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-07-21 06:56:06,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:06,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581965473] [2022-07-21 06:56:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:06,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:06,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:06,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:06,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581965473] [2022-07-21 06:56:06,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581965473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:06,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:06,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 06:56:06,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659323352] [2022-07-21 06:56:06,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:06,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:56:06,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:56:06,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:56:06,824 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-21 06:56:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:09,549 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2022-07-21 06:56:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 06:56:09,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:09,573 INFO L225 Difference]: With dead ends: 3417 [2022-07-21 06:56:09,573 INFO L226 Difference]: Without dead ends: 3084 [2022-07-21 06:56:09,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:56:09,580 INFO L413 NwaCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12755 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17371 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:09,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 17371 Invalid, 1981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 06:56:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-07-21 06:56:09,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2022-07-21 06:56:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-21 06:56:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2022-07-21 06:56:09,697 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2022-07-21 06:56:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:09,699 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2022-07-21 06:56:09,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-21 06:56:09,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2022-07-21 06:56:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:09,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:09,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:09,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:56:09,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:09,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-07-21 06:56:09,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:09,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586996606] [2022-07-21 06:56:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:09,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:09,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:10,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:10,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:10,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586996606] [2022-07-21 06:56:10,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586996606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:10,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:10,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:10,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457618785] [2022-07-21 06:56:10,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:10,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:10,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:10,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:10,012 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:13,279 INFO L93 Difference]: Finished difference Result 4265 states and 7403 transitions. [2022-07-21 06:56:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:56:13,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:13,301 INFO L225 Difference]: With dead ends: 4265 [2022-07-21 06:56:13,301 INFO L226 Difference]: Without dead ends: 3582 [2022-07-21 06:56:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:56:13,306 INFO L413 NwaCegarLoop]: 4895 mSDtfsCounter, 5420 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 22471 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:13,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 22471 Invalid, 2978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 06:56:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-07-21 06:56:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3148. [2022-07-21 06:56:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7775236850702385) internal successors, (5441), 3065 states have internal predecessors, (5441), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-21 06:56:13,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5576 transitions. [2022-07-21 06:56:13,427 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5576 transitions. Word has length 167 [2022-07-21 06:56:13,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:13,428 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5576 transitions. [2022-07-21 06:56:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5576 transitions. [2022-07-21 06:56:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:13,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:13,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:13,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:56:13,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2022-07-21 06:56:13,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651498556] [2022-07-21 06:56:13,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:13,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:13,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:13,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651498556] [2022-07-21 06:56:13,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651498556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:13,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:13,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:13,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018559233] [2022-07-21 06:56:13,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:13,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:13,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:13,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:13,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:13,601 INFO L87 Difference]: Start difference. First operand 3148 states and 5576 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:16,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:16,817 INFO L93 Difference]: Finished difference Result 5515 states and 9398 transitions. [2022-07-21 06:56:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:56:16,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:16,839 INFO L225 Difference]: With dead ends: 5515 [2022-07-21 06:56:16,839 INFO L226 Difference]: Without dead ends: 4507 [2022-07-21 06:56:16,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:56:16,846 INFO L413 NwaCegarLoop]: 4887 mSDtfsCounter, 5417 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5435 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:16,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5435 Valid, 22463 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 06:56:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-07-21 06:56:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3799. [2022-07-21 06:56:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3658 states have (on average 1.7419354838709677) internal successors, (6372), 3664 states have internal predecessors, (6372), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-21 06:56:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6595 transitions. [2022-07-21 06:56:17,009 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6595 transitions. Word has length 167 [2022-07-21 06:56:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:17,009 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 6595 transitions. [2022-07-21 06:56:17,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6595 transitions. [2022-07-21 06:56:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:17,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:17,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:17,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:56:17,013 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2022-07-21 06:56:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:17,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038493603] [2022-07-21 06:56:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:17,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:17,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038493603] [2022-07-21 06:56:17,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038493603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:17,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:17,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766822481] [2022-07-21 06:56:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:17,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:17,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:17,147 INFO L87 Difference]: Start difference. First operand 3799 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:20,157 INFO L93 Difference]: Finished difference Result 7918 states and 13209 transitions. [2022-07-21 06:56:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:56:20,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:20,186 INFO L225 Difference]: With dead ends: 7918 [2022-07-21 06:56:20,187 INFO L226 Difference]: Without dead ends: 6259 [2022-07-21 06:56:20,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:56:20,198 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5413 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5431 SdHoareTripleChecker+Valid, 22459 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:20,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5431 Valid, 22459 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 06:56:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2022-07-21 06:56:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5102. [2022-07-21 06:56:20,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 4853 states have (on average 1.6966824644549763) internal successors, (8234), 4863 states have internal predecessors, (8234), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-21 06:56:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8639 transitions. [2022-07-21 06:56:20,442 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8639 transitions. Word has length 167 [2022-07-21 06:56:20,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:20,442 INFO L495 AbstractCegarLoop]: Abstraction has 5102 states and 8639 transitions. [2022-07-21 06:56:20,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8639 transitions. [2022-07-21 06:56:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:20,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:20,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:20,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:56:20,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:20,449 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2022-07-21 06:56:20,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:20,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945971388] [2022-07-21 06:56:20,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:20,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:20,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:20,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945971388] [2022-07-21 06:56:20,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945971388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:20,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:20,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158714648] [2022-07-21 06:56:20,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:20,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:20,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:20,609 INFO L87 Difference]: Start difference. First operand 5102 states and 8639 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:23,775 INFO L93 Difference]: Finished difference Result 12723 states and 20847 transitions. [2022-07-21 06:56:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:56:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:23,817 INFO L225 Difference]: With dead ends: 12723 [2022-07-21 06:56:23,817 INFO L226 Difference]: Without dead ends: 9761 [2022-07-21 06:56:23,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:56:23,832 INFO L413 NwaCegarLoop]: 4879 mSDtfsCounter, 5409 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:23,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22455 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 06:56:23,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2022-07-21 06:56:24,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7713. [2022-07-21 06:56:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7248 states have (on average 1.650662251655629) internal successors, (11964), 7266 states have internal predecessors, (11964), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-21 06:56:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12751 transitions. [2022-07-21 06:56:24,382 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12751 transitions. Word has length 167 [2022-07-21 06:56:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:24,383 INFO L495 AbstractCegarLoop]: Abstraction has 7713 states and 12751 transitions. [2022-07-21 06:56:24,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12751 transitions. [2022-07-21 06:56:24,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:24,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:24,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:24,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:56:24,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2022-07-21 06:56:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:24,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688933818] [2022-07-21 06:56:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:24,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:24,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:24,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688933818] [2022-07-21 06:56:24,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688933818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:24,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:24,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375435142] [2022-07-21 06:56:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:24,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:24,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:24,552 INFO L87 Difference]: Start difference. First operand 7713 states and 12751 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:27,998 INFO L93 Difference]: Finished difference Result 22332 states and 36181 transitions. [2022-07-21 06:56:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:56:27,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:28,055 INFO L225 Difference]: With dead ends: 22332 [2022-07-21 06:56:28,055 INFO L226 Difference]: Without dead ends: 16759 [2022-07-21 06:56:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:56:28,077 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22449 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22449 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 06:56:28,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2022-07-21 06:56:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12948. [2022-07-21 06:56:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.613310098746992) internal successors, (19442), 12085 states have internal predecessors, (19442), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-21 06:56:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21047 transitions. [2022-07-21 06:56:28,874 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21047 transitions. Word has length 167 [2022-07-21 06:56:28,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:28,874 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21047 transitions. [2022-07-21 06:56:28,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21047 transitions. [2022-07-21 06:56:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:28,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:28,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:28,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:56:28,882 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:28,883 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2022-07-21 06:56:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:28,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347696056] [2022-07-21 06:56:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:28,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:28,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:29,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347696056] [2022-07-21 06:56:29,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347696056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:29,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:29,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:29,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193020636] [2022-07-21 06:56:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:29,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:29,013 INFO L87 Difference]: Start difference. First operand 12948 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:31,585 INFO L93 Difference]: Finished difference Result 27774 states and 45096 transitions. [2022-07-21 06:56:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 06:56:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:31,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:31,651 INFO L225 Difference]: With dead ends: 27774 [2022-07-21 06:56:31,651 INFO L226 Difference]: Without dead ends: 16966 [2022-07-21 06:56:31,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:56:31,691 INFO L413 NwaCegarLoop]: 4542 mSDtfsCounter, 4998 mSDsluCounter, 16699 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:31,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21241 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 06:56:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16966 states. [2022-07-21 06:56:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16966 to 12948. [2022-07-21 06:56:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.610571736785329) internal successors, (19409), 12085 states have internal predecessors, (19409), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-21 06:56:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21014 transitions. [2022-07-21 06:56:32,540 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21014 transitions. Word has length 167 [2022-07-21 06:56:32,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:32,540 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21014 transitions. [2022-07-21 06:56:32,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:32,541 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21014 transitions. [2022-07-21 06:56:32,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:32,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:32,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:32,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 06:56:32,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:32,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2022-07-21 06:56:32,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:32,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941687716] [2022-07-21 06:56:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:32,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:32,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:32,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941687716] [2022-07-21 06:56:32,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941687716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:32,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:32,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:32,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571609045] [2022-07-21 06:56:32,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:32,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:32,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:32,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:32,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:32,717 INFO L87 Difference]: Start difference. First operand 12948 states and 21014 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:37,389 INFO L93 Difference]: Finished difference Result 41484 states and 66747 transitions. [2022-07-21 06:56:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:56:37,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:37,503 INFO L225 Difference]: With dead ends: 41484 [2022-07-21 06:56:37,503 INFO L226 Difference]: Without dead ends: 30676 [2022-07-21 06:56:37,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:56:37,542 INFO L413 NwaCegarLoop]: 4859 mSDtfsCounter, 5396 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 22435 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:37,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 22435 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 06:56:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2022-07-21 06:56:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 23513. [2022-07-21 06:56:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 21752 states have (on average 1.5849117322545054) internal successors, (34475), 21818 states have internal predecessors, (34475), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-21 06:56:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 37878 transitions. [2022-07-21 06:56:39,040 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 37878 transitions. Word has length 167 [2022-07-21 06:56:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:39,040 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 37878 transitions. [2022-07-21 06:56:39,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 37878 transitions. [2022-07-21 06:56:39,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:39,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:39,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:39,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 06:56:39,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:39,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:39,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2022-07-21 06:56:39,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:39,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811532228] [2022-07-21 06:56:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:39,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:39,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:39,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:39,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811532228] [2022-07-21 06:56:39,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811532228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:39,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:39,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:39,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157208924] [2022-07-21 06:56:39,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:39,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:39,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:39,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:39,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:39,303 INFO L87 Difference]: Start difference. First operand 23513 states and 37878 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:45,632 INFO L93 Difference]: Finished difference Result 79923 states and 128881 transitions. [2022-07-21 06:56:45,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:56:45,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:56:45,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:45,948 INFO L225 Difference]: With dead ends: 79923 [2022-07-21 06:56:45,949 INFO L226 Difference]: Without dead ends: 58550 [2022-07-21 06:56:46,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:56:46,018 INFO L413 NwaCegarLoop]: 4854 mSDtfsCounter, 5395 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 22430 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:46,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 22430 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 06:56:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58550 states. [2022-07-21 06:56:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58550 to 44702. [2022-07-21 06:56:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44702 states, 41213 states have (on average 1.5697231456093952) internal successors, (64693), 41343 states have internal predecessors, (64693), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-21 06:56:49,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44702 states to 44702 states and 72178 transitions. [2022-07-21 06:56:49,388 INFO L78 Accepts]: Start accepts. Automaton has 44702 states and 72178 transitions. Word has length 167 [2022-07-21 06:56:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:49,388 INFO L495 AbstractCegarLoop]: Abstraction has 44702 states and 72178 transitions. [2022-07-21 06:56:49,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:56:49,388 INFO L276 IsEmpty]: Start isEmpty. Operand 44702 states and 72178 transitions. [2022-07-21 06:56:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:56:49,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:49,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:49,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 06:56:49,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:49,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2022-07-21 06:56:49,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:49,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402337817] [2022-07-21 06:56:49,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:49,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:49,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:56:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:56:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:56:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:56:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:56:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:49,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402337817] [2022-07-21 06:56:49,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402337817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:49,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:49,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:49,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641643134] [2022-07-21 06:56:49,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:49,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:49,666 INFO L87 Difference]: Start difference. First operand 44702 states and 72178 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:57:00,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:00,809 INFO L93 Difference]: Finished difference Result 156798 states and 254991 transitions. [2022-07-21 06:57:00,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:57:00,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:57:00,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:01,385 INFO L225 Difference]: With dead ends: 156798 [2022-07-21 06:57:01,385 INFO L226 Difference]: Without dead ends: 114236 [2022-07-21 06:57:01,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:57:01,497 INFO L413 NwaCegarLoop]: 4849 mSDtfsCounter, 5394 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 22425 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:01,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5412 Valid, 22425 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 06:57:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114236 states. [2022-07-21 06:57:07,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114236 to 87207. [2022-07-21 06:57:07,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5613740001495104) internal successors, (125319), 80520 states have internal predecessors, (125319), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-21 06:57:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142426 transitions. [2022-07-21 06:57:08,225 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142426 transitions. Word has length 167 [2022-07-21 06:57:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:57:08,225 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142426 transitions. [2022-07-21 06:57:08,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:57:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142426 transitions. [2022-07-21 06:57:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 06:57:08,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:57:08,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:57:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 06:57:08,269 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:57:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:57:08,270 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2022-07-21 06:57:08,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:57:08,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821304419] [2022-07-21 06:57:08,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:57:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:57:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:57:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:57:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 06:57:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 06:57:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-21 06:57:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:57:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:57:08,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:57:08,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821304419] [2022-07-21 06:57:08,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821304419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:57:08,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:57:08,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:57:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576479931] [2022-07-21 06:57:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:57:08,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:57:08,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:57:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:57:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:57:08,404 INFO L87 Difference]: Start difference. First operand 87207 states and 142426 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-21 06:57:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:57:19,403 INFO L93 Difference]: Finished difference Result 200924 states and 334667 transitions. [2022-07-21 06:57:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 06:57:19,404 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-21 06:57:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:57:19,788 INFO L225 Difference]: With dead ends: 200924 [2022-07-21 06:57:19,788 INFO L226 Difference]: Without dead ends: 115857 [2022-07-21 06:57:20,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:57:20,176 INFO L413 NwaCegarLoop]: 4529 mSDtfsCounter, 5153 mSDsluCounter, 12560 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 17089 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:57:20,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 17089 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 06:57:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115857 states.