./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5a8b3103e2d9faed499388786efbacaa303edd9c4d157d09b07735fe300c357 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:29:07,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:29:07,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:29:07,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:29:07,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:29:07,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:29:07,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:29:07,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:29:07,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:29:07,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:29:07,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:29:07,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:29:07,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:29:07,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:29:07,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:29:07,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:29:07,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:29:07,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:29:07,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:29:07,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:29:07,524 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:29:07,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:29:07,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:29:07,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:29:07,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:29:07,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:29:07,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:29:07,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:29:07,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:29:07,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:29:07,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:29:07,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:29:07,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:29:07,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:29:07,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:29:07,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:29:07,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:29:07,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:29:07,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:29:07,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:29:07,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:29:07,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:29:07,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:29:07,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:29:07,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:29:07,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:29:07,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:29:07,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:29:07,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:29:07,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:29:07,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:29:07,581 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:29:07,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:29:07,581 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:29:07,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:29:07,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:29:07,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:29:07,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:29:07,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:29:07,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:29:07,582 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:29:07,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:29:07,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:29:07,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:29:07,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:29:07,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:29:07,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:29:07,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:29:07,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:29:07,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:29:07,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:29:07,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:29:07,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:29:07,584 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:29:07,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:29:07,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:29:07,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a8b3103e2d9faed499388786efbacaa303edd9c4d157d09b07735fe300c357 [2022-07-22 19:29:07,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:29:07,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:29:07,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:29:07,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:29:07,775 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:29:07,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c [2022-07-22 19:29:07,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dd75783d/66678254815e4df5a12ff63d8ae97598/FLAG47eac5b01 [2022-07-22 19:29:08,458 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:29:08,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c [2022-07-22 19:29:08,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dd75783d/66678254815e4df5a12ff63d8ae97598/FLAG47eac5b01 [2022-07-22 19:29:08,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dd75783d/66678254815e4df5a12ff63d8ae97598 [2022-07-22 19:29:08,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:29:08,573 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:29:08,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:29:08,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:29:08,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:29:08,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:29:08" (1/1) ... [2022-07-22 19:29:08,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5543b2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:08, skipping insertion in model container [2022-07-22 19:29:08,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:29:08" (1/1) ... [2022-07-22 19:29:08,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:29:08,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:29:10,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[376251,376264] [2022-07-22 19:29:10,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[383339,383352] [2022-07-22 19:29:10,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:29:10,287 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:29:10,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[376251,376264] [2022-07-22 19:29:10,929 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[383339,383352] [2022-07-22 19:29:10,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:29:10,990 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:29:10,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10 WrapperNode [2022-07-22 19:29:10,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:29:10,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:29:10,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:29:10,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:29:10,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,360 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2022-07-22 19:29:11,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:29:11,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:29:11,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:29:11,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:29:11,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:29:11,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:29:11,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:29:11,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:29:11,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (1/1) ... [2022-07-22 19:29:11,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:29:11,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:29:11,785 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) [2022-07-22 19:29:11,811 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 [2022-07-22 19:29:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:29:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:29:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:29:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:29:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:29:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:29:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:29:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:29:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:29:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:29:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:29:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:29:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:29:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:29:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:29:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:29:12,098 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:29:12,100 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:29:16,818 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:29:16,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:29:16,859 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-22 19:29:16,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:29:16 BoogieIcfgContainer [2022-07-22 19:29:16,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:29:16,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:29:16,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:29:16,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:29:16,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:29:08" (1/3) ... [2022-07-22 19:29:16,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c74f08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:29:16, skipping insertion in model container [2022-07-22 19:29:16,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:29:10" (2/3) ... [2022-07-22 19:29:16,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c74f08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:29:16, skipping insertion in model container [2022-07-22 19:29:16,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:29:16" (3/3) ... [2022-07-22 19:29:16,871 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.08.cil-1.c [2022-07-22 19:29:16,896 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:29:16,897 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:29:17,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:29:17,025 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@4a1fa56, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d615154 [2022-07-22 19:29:17,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:29:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-22 19:29:17,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:17,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:17,075 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] [2022-07-22 19:29:17,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:17,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2022-07-22 19:29:17,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:17,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575273415] [2022-07-22 19:29:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:17,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:17,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:17,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575273415] [2022-07-22 19:29:17,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575273415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:17,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:17,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:29:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738651089] [2022-07-22 19:29:17,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:17,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:29:17,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:29:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:29:17,696 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-07-22 19:29:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:18,772 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2022-07-22 19:29:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:29:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:18,791 INFO L225 Difference]: With dead ends: 5022 [2022-07-22 19:29:18,791 INFO L226 Difference]: Without dead ends: 2496 [2022-07-22 19:29:18,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:29:18,800 INFO L413 NwaCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16860 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:18,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 16860 Invalid, 563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:29:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-07-22 19:29:18,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2022-07-22 19:29:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-22 19:29:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2022-07-22 19:29:18,887 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2022-07-22 19:29:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:18,887 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2022-07-22 19:29:18,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-07-22 19:29:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2022-07-22 19:29:18,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:18,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:18,890 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] [2022-07-22 19:29:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:29:18,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2022-07-22 19:29:18,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:18,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759505626] [2022-07-22 19:29:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:18,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:19,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:19,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759505626] [2022-07-22 19:29:19,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759505626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:19,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:19,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:29:19,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457203088] [2022-07-22 19:29:19,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:19,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:29:19,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:29:19,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:29:19,166 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-07-22 19:29:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:20,815 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2022-07-22 19:29:20,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:29:20,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:20,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:20,833 INFO L225 Difference]: With dead ends: 3126 [2022-07-22 19:29:20,834 INFO L226 Difference]: Without dead ends: 2865 [2022-07-22 19:29:20,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:29:20,839 INFO L413 NwaCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12566 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:20,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 17032 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:29:20,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-07-22 19:29:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2022-07-22 19:29:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-22 19:29:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2022-07-22 19:29:20,910 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2022-07-22 19:29:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:20,911 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2022-07-22 19:29:20,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-07-22 19:29:20,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2022-07-22 19:29:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:20,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:20,914 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] [2022-07-22 19:29:20,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:29:20,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2022-07-22 19:29:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:20,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073591483] [2022-07-22 19:29:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:21,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:21,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:21,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073591483] [2022-07-22 19:29:21,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073591483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:21,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:21,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056695533] [2022-07-22 19:29:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:21,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:21,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:21,076 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:22,879 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2022-07-22 19:29:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:22,890 INFO L225 Difference]: With dead ends: 3779 [2022-07-22 19:29:22,891 INFO L226 Difference]: Without dead ends: 3246 [2022-07-22 19:29:22,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:22,894 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 5064 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:22,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5079 Valid, 21869 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:29:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-07-22 19:29:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2022-07-22 19:29:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-22 19:29:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2022-07-22 19:29:22,962 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2022-07-22 19:29:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:22,962 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2022-07-22 19:29:22,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:22,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2022-07-22 19:29:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:22,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:22,964 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] [2022-07-22 19:29:22,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:29:22,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2022-07-22 19:29:22,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:22,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575815370] [2022-07-22 19:29:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:23,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575815370] [2022-07-22 19:29:23,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575815370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:23,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:23,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942172380] [2022-07-22 19:29:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:23,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:23,052 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:24,797 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2022-07-22 19:29:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:24,811 INFO L225 Difference]: With dead ends: 4741 [2022-07-22 19:29:24,811 INFO L226 Difference]: Without dead ends: 3955 [2022-07-22 19:29:24,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:24,815 INFO L413 NwaCegarLoop]: 4494 mSDtfsCounter, 5141 mSDsluCounter, 16738 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:24,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5156 Valid, 21232 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:29:24,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-07-22 19:29:24,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2022-07-22 19:29:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-22 19:29:24,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2022-07-22 19:29:24,923 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2022-07-22 19:29:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:24,924 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2022-07-22 19:29:24,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2022-07-22 19:29:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:24,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:24,929 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] [2022-07-22 19:29:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:29:24,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2022-07-22 19:29:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:24,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903342857] [2022-07-22 19:29:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:25,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:25,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:25,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903342857] [2022-07-22 19:29:25,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903342857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:25,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:25,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:25,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421449056] [2022-07-22 19:29:25,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:25,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:25,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:25,045 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:27,085 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2022-07-22 19:29:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:27,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:27,102 INFO L225 Difference]: With dead ends: 6592 [2022-07-22 19:29:27,102 INFO L226 Difference]: Without dead ends: 5299 [2022-07-22 19:29:27,106 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 [2022-07-22 19:29:27,107 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21857 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:27,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 21857 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:29:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2022-07-22 19:29:27,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2022-07-22 19:29:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-22 19:29:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2022-07-22 19:29:27,236 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2022-07-22 19:29:27,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:27,236 INFO L495 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2022-07-22 19:29:27,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:27,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2022-07-22 19:29:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:27,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:27,239 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] [2022-07-22 19:29:27,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:29:27,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:27,240 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2022-07-22 19:29:27,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:27,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089404142] [2022-07-22 19:29:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:27,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:27,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:27,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:27,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:27,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:27,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089404142] [2022-07-22 19:29:27,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089404142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:27,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:27,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:27,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979909663] [2022-07-22 19:29:27,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:27,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:27,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:27,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:27,329 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:29,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:29,349 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2022-07-22 19:29:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:29,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:29,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:29,390 INFO L225 Difference]: With dead ends: 10286 [2022-07-22 19:29:29,391 INFO L226 Difference]: Without dead ends: 7978 [2022-07-22 19:29:29,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:29,402 INFO L413 NwaCegarLoop]: 4657 mSDtfsCounter, 5054 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 21849 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:29,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5069 Valid, 21849 Invalid, 2272 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:29:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-07-22 19:29:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2022-07-22 19:29:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-22 19:29:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2022-07-22 19:29:29,612 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2022-07-22 19:29:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:29,612 INFO L495 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2022-07-22 19:29:29,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:29,613 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2022-07-22 19:29:29,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:29,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:29,616 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] [2022-07-22 19:29:29,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:29:29,617 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:29,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2022-07-22 19:29:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:29,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478819282] [2022-07-22 19:29:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:29,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:29,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:29,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:29,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:29,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:29,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478819282] [2022-07-22 19:29:29,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478819282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:29,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:29,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:29,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499008070] [2022-07-22 19:29:29,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:29,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:29,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:29,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:29,747 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:31,806 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2022-07-22 19:29:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:31,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:31,876 INFO L225 Difference]: With dead ends: 17692 [2022-07-22 19:29:31,877 INFO L226 Difference]: Without dead ends: 13340 [2022-07-22 19:29:31,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:31,895 INFO L413 NwaCegarLoop]: 4652 mSDtfsCounter, 5053 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 21844 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:31,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5068 Valid, 21844 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:29:31,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2022-07-22 19:29:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2022-07-22 19:29:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-22 19:29:32,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2022-07-22 19:29:32,383 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2022-07-22 19:29:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:32,383 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2022-07-22 19:29:32,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2022-07-22 19:29:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:32,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:32,391 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] [2022-07-22 19:29:32,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:29:32,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2022-07-22 19:29:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:32,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343072024] [2022-07-22 19:29:32,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:32,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:32,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:32,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343072024] [2022-07-22 19:29:32,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343072024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:32,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:32,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:32,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703758927] [2022-07-22 19:29:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:32,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:32,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:32,498 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:33,954 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2022-07-22 19:29:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:29:33,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:33,990 INFO L225 Difference]: With dead ends: 21934 [2022-07-22 19:29:33,990 INFO L226 Difference]: Without dead ends: 13481 [2022-07-22 19:29:34,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:29:34,014 INFO L413 NwaCegarLoop]: 4398 mSDtfsCounter, 4752 mSDsluCounter, 16507 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20905 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:34,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 20905 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:29:34,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2022-07-22 19:29:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2022-07-22 19:29:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-22 19:29:34,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2022-07-22 19:29:34,406 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2022-07-22 19:29:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:34,407 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2022-07-22 19:29:34,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2022-07-22 19:29:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:34,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:34,412 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] [2022-07-22 19:29:34,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:29:34,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2022-07-22 19:29:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:34,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882596806] [2022-07-22 19:29:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:34,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:34,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:34,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882596806] [2022-07-22 19:29:34,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882596806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:34,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:34,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:34,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87444377] [2022-07-22 19:29:34,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:34,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:34,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:34,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:34,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:34,493 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:37,232 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2022-07-22 19:29:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:29:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:37,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:37,300 INFO L225 Difference]: With dead ends: 32469 [2022-07-22 19:29:37,300 INFO L226 Difference]: Without dead ends: 24016 [2022-07-22 19:29:37,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:29:37,329 INFO L413 NwaCegarLoop]: 4641 mSDtfsCounter, 5045 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5060 SdHoareTripleChecker+Valid, 21833 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:37,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5060 Valid, 21833 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:29:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-07-22 19:29:38,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2022-07-22 19:29:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-22 19:29:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2022-07-22 19:29:38,482 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2022-07-22 19:29:38,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:38,482 INFO L495 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2022-07-22 19:29:38,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2022-07-22 19:29:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:38,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:38,491 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] [2022-07-22 19:29:38,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:29:38,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:38,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2022-07-22 19:29:38,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:38,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095748297] [2022-07-22 19:29:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:38,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:38,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:38,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095748297] [2022-07-22 19:29:38,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095748297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:38,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:38,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:38,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108369747] [2022-07-22 19:29:38,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:38,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:38,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:38,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:38,569 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:43,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:43,416 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2022-07-22 19:29:43,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:43,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:43,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:43,573 INFO L225 Difference]: With dead ends: 69837 [2022-07-22 19:29:43,573 INFO L226 Difference]: Without dead ends: 53118 [2022-07-22 19:29:43,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:43,618 INFO L413 NwaCegarLoop]: 4634 mSDtfsCounter, 5374 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 21818 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:43,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5398 Valid, 21818 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:29:43,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-07-22 19:29:45,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2022-07-22 19:29:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-07-22 19:29:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2022-07-22 19:29:45,509 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2022-07-22 19:29:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:45,509 INFO L495 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2022-07-22 19:29:45,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2022-07-22 19:29:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:45,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:45,526 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] [2022-07-22 19:29:45,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:29:45,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:45,527 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2022-07-22 19:29:45,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:45,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850926306] [2022-07-22 19:29:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:45,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:45,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:45,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850926306] [2022-07-22 19:29:45,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850926306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:45,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:45,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:45,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239029440] [2022-07-22 19:29:45,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:45,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:45,624 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:54,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:29:54,209 INFO L93 Difference]: Finished difference Result 134716 states and 217164 transitions. [2022-07-22 19:29:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:29:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:29:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:29:54,730 INFO L225 Difference]: With dead ends: 134716 [2022-07-22 19:29:54,730 INFO L226 Difference]: Without dead ends: 101596 [2022-07-22 19:29:54,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:29:54,816 INFO L413 NwaCegarLoop]: 4603 mSDtfsCounter, 5181 mSDsluCounter, 16758 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 21361 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:29:54,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 21361 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:29:54,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101596 states. [2022-07-22 19:29:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101596 to 67354. [2022-07-22 19:29:59,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67354 states, 61436 states have (on average 1.5524122664235953) internal successors, (95374), 61694 states have internal predecessors, (95374), 4118 states have call successors, (4118), 1542 states have call predecessors, (4118), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2022-07-22 19:29:59,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67354 states to 67354 states and 110427 transitions. [2022-07-22 19:29:59,789 INFO L78 Accepts]: Start accepts. Automaton has 67354 states and 110427 transitions. Word has length 134 [2022-07-22 19:29:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:29:59,790 INFO L495 AbstractCegarLoop]: Abstraction has 67354 states and 110427 transitions. [2022-07-22 19:29:59,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:29:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 67354 states and 110427 transitions. [2022-07-22 19:29:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 19:29:59,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:29:59,820 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] [2022-07-22 19:29:59,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:29:59,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:29:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:29:59,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2022-07-22 19:29:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:29:59,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831238596] [2022-07-22 19:29:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:29:59,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:29:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:29:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 19:29:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 19:29:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:29:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 19:29:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:29:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:29:59,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:29:59,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831238596] [2022-07-22 19:29:59,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831238596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:29:59,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:29:59,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:29:59,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983409645] [2022-07-22 19:29:59,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:29:59,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:29:59,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:29:59,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:29:59,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:29:59,904 INFO L87 Difference]: Start difference. First operand 67354 states and 110427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-22 19:30:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:30:16,602 INFO L93 Difference]: Finished difference Result 260187 states and 427554 transitions. [2022-07-22 19:30:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:30:16,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-22 19:30:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:30:17,571 INFO L225 Difference]: With dead ends: 260187 [2022-07-22 19:30:17,572 INFO L226 Difference]: Without dead ends: 194970 [2022-07-22 19:30:17,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:30:17,766 INFO L413 NwaCegarLoop]: 4622 mSDtfsCounter, 5297 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 21806 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:30:17,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5321 Valid, 21806 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 19:30:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194970 states. [2022-07-22 19:30:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194970 to 132059. [2022-07-22 19:30:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132059 states, 120509 states have (on average 1.5487639927308334) internal successors, (186640), 121023 states have internal predecessors, (186640), 7958 states have call successors, (7958), 3078 states have call predecessors, (7958), 3590 states have return successors, (28153), 8469 states have call predecessors, (28153), 7958 states have call successors, (28153)