./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.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_label43+token_ring.03.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 d5e8784cabcb38b73600d610d5b7e0bbbbf790f527b046ae80f9a34c4ea82403 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:32:45,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:32:45,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:32:45,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:32:45,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:32:45,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:32:45,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:32:45,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:32:45,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:32:45,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:32:45,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:32:45,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:32:45,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:32:45,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:32:45,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:32:45,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:32:45,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:32:45,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:32:45,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:32:45,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:32:45,504 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:32:45,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:32:45,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:32:45,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:32:45,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:32:45,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:32:45,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:32:45,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:32:45,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:32:45,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:32:45,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:32:45,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:32:45,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:32:45,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:32:45,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:32:45,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:32:45,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:32:45,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:32:45,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:32:45,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:32:45,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:32:45,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:32:45,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:32:45,563 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:32:45,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:32:45,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:32:45,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:32:45,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:32:45,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:32:45,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:32:45,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:32:45,566 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:32:45,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:32:45,568 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:32:45,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:32:45,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:32:45,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:32:45,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:32:45,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:32:45,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:32:45,569 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:32:45,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:32:45,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:32:45,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:32:45,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:32:45,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:32:45,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:32:45,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:32:45,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:32:45,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:32:45,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:32:45,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:32:45,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:32:45,572 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:32:45,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:32:45,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:32:45,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5e8784cabcb38b73600d610d5b7e0bbbbf790f527b046ae80f9a34c4ea82403 [2022-07-22 19:32:45,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:32:45,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:32:45,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:32:45,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:32:45,832 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:32:45,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c [2022-07-22 19:32:45,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0529cbac/ae43fe9217b24ad3a0d58a832fbc378a/FLAG51532992e [2022-07-22 19:32:46,727 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:32:46,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c [2022-07-22 19:32:46,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0529cbac/ae43fe9217b24ad3a0d58a832fbc378a/FLAG51532992e [2022-07-22 19:32:46,932 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0529cbac/ae43fe9217b24ad3a0d58a832fbc378a [2022-07-22 19:32:46,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:32:46,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:32:46,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:32:46,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:32:46,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:32:46,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:32:46" (1/1) ... [2022-07-22 19:32:46,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d613090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:46, skipping insertion in model container [2022-07-22 19:32:46,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:32:46" (1/1) ... [2022-07-22 19:32:46,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:32:47,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:32:48,717 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2022-07-22 19:32:48,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2022-07-22 19:32:48,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:32:48,900 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:32:49,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2022-07-22 19:32:49,633 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2022-07-22 19:32:49,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:32:49,711 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:32:49,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49 WrapperNode [2022-07-22 19:32:49,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:32:49,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:32:49,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:32:49,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:32:49,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:49,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,209 INFO L137 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12682 [2022-07-22 19:32:50,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:32:50,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:32:50,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:32:50,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:32:50,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:32:50,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:32:50,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:32:50,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:32:50,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (1/1) ... [2022-07-22 19:32:50,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:32:50,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:32:50,717 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 19:32:50,745 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 19:32:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:32:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:32:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:32:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:32:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:32:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:32:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:32:50,768 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:32:50,768 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:32:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:32:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:32:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:32:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:32:50,769 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:32:50,769 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:32:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:32:50,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:32:50,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:32:50,860 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:32:50,862 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:32:56,837 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:32:56,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:32:56,854 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-22 19:32:56,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:32:56 BoogieIcfgContainer [2022-07-22 19:32:56,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:32:56,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:32:56,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:32:56,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:32:56,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:32:46" (1/3) ... [2022-07-22 19:32:56,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622b2539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:32:56, skipping insertion in model container [2022-07-22 19:32:56,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:32:49" (2/3) ... [2022-07-22 19:32:56,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622b2539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:32:56, skipping insertion in model container [2022-07-22 19:32:56,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:32:56" (3/3) ... [2022-07-22 19:32:56,866 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-1.c [2022-07-22 19:32:56,878 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:32:56,878 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:32:56,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:32:56,965 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@4b56bf72, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a17cd41 [2022-07-22 19:32:56,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:32:56,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-22 19:32:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:32:56,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:56,991 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] [2022-07-22 19:32:56,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:56,996 INFO L85 PathProgramCache]: Analyzing trace with hash 520182233, now seen corresponding path program 1 times [2022-07-22 19:32:57,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:57,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893697285] [2022-07-22 19:32:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:57,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:32:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:32:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:32:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:32:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:57,359 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 19:32:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:57,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893697285] [2022-07-22 19:32:57,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893697285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:57,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:57,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:32:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688537512] [2022-07-22 19:32:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:57,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:32:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:32:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:32:57,404 INFO L87 Difference]: Start difference. First operand has 2348 states, 2319 states have (on average 1.8559724018973696) internal successors, (4304), 2324 states have internal predecessors, (4304), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:32:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:58,431 INFO L93 Difference]: Finished difference Result 4921 states and 9054 transitions. [2022-07-22 19:32:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:32:58,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:32:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:58,466 INFO L225 Difference]: With dead ends: 4921 [2022-07-22 19:32:58,467 INFO L226 Difference]: Without dead ends: 2514 [2022-07-22 19:32:58,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:32:58,482 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 4559 mSDsluCounter, 12506 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4569 SdHoareTripleChecker+Valid, 16805 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:58,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4569 Valid, 16805 Invalid, 794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:32:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-07-22 19:32:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2427. [2022-07-22 19:32:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2381 states have (on average 1.8299034019319613) internal successors, (4357), 2385 states have internal predecessors, (4357), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-07-22 19:32:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4420 transitions. [2022-07-22 19:32:58,722 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4420 transitions. Word has length 80 [2022-07-22 19:32:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:58,722 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 4420 transitions. [2022-07-22 19:32:58,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:32:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4420 transitions. [2022-07-22 19:32:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:32:58,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:58,729 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] [2022-07-22 19:32:58,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:32:58,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:32:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:32:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash -721258283, now seen corresponding path program 1 times [2022-07-22 19:32:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:32:58,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345646279] [2022-07-22 19:32:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:32:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:32:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:32:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:32:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:32:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:32:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:32:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:32:58,892 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 19:32:58,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:32:58,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345646279] [2022-07-22 19:32:58,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345646279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:32:58,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:32:58,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:32:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755625250] [2022-07-22 19:32:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:32:58,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:32:58,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:32:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:32:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:32:58,901 INFO L87 Difference]: Start difference. First operand 2427 states and 4420 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:32:59,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:32:59,901 INFO L93 Difference]: Finished difference Result 3000 states and 5300 transitions. [2022-07-22 19:32:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:32:59,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:32:59,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:32:59,915 INFO L225 Difference]: With dead ends: 3000 [2022-07-22 19:32:59,916 INFO L226 Difference]: Without dead ends: 2705 [2022-07-22 19:32:59,918 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 19:32:59,919 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 4483 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 20982 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:32:59,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 20982 Invalid, 1164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:32:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-07-22 19:32:59,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2565. [2022-07-22 19:32:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2565 states, 2500 states have (on average 1.8144) internal successors, (4536), 2505 states have internal predecessors, (4536), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-22 19:32:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 4625 transitions. [2022-07-22 19:32:59,996 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 4625 transitions. Word has length 80 [2022-07-22 19:32:59,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:32:59,997 INFO L495 AbstractCegarLoop]: Abstraction has 2565 states and 4625 transitions. [2022-07-22 19:32:59,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:32:59,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 4625 transitions. [2022-07-22 19:32:59,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:32:59,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:32:59,999 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] [2022-07-22 19:32:59,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:33:00,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:00,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:00,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1887529175, now seen corresponding path program 1 times [2022-07-22 19:33:00,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:00,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750317424] [2022-07-22 19:33:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:00,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:00,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:00,090 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 19:33:00,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:00,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750317424] [2022-07-22 19:33:00,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750317424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:00,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:00,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:00,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123846721] [2022-07-22 19:33:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:00,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:00,096 INFO L87 Difference]: Start difference. First operand 2565 states and 4625 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:01,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:01,278 INFO L93 Difference]: Finished difference Result 3497 states and 6053 transitions. [2022-07-22 19:33:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:01,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:33:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:01,294 INFO L225 Difference]: With dead ends: 3497 [2022-07-22 19:33:01,294 INFO L226 Difference]: Without dead ends: 3064 [2022-07-22 19:33:01,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:01,298 INFO L413 NwaCegarLoop]: 4336 mSDtfsCounter, 4480 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 20974 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:01,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4490 Valid, 20974 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:33:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2022-07-22 19:33:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 2842. [2022-07-22 19:33:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2739 states have (on average 1.78714859437751) internal successors, (4895), 2746 states have internal predecessors, (4895), 67 states have call successors, (67), 31 states have call predecessors, (67), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-07-22 19:33:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 5040 transitions. [2022-07-22 19:33:01,388 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 5040 transitions. Word has length 80 [2022-07-22 19:33:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:01,388 INFO L495 AbstractCegarLoop]: Abstraction has 2842 states and 5040 transitions. [2022-07-22 19:33:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 5040 transitions. [2022-07-22 19:33:01,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:33:01,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:01,391 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] [2022-07-22 19:33:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:33:01,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1833136277, now seen corresponding path program 1 times [2022-07-22 19:33:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790536725] [2022-07-22 19:33:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:01,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:01,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:01,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:01,465 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 19:33:01,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:01,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790536725] [2022-07-22 19:33:01,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790536725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:01,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:01,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:01,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600870638] [2022-07-22 19:33:01,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:01,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:01,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:01,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:01,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:01,468 INFO L87 Difference]: Start difference. First operand 2842 states and 5040 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:02,667 INFO L93 Difference]: Finished difference Result 4458 states and 7508 transitions. [2022-07-22 19:33:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:33:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:02,684 INFO L225 Difference]: With dead ends: 4458 [2022-07-22 19:33:02,685 INFO L226 Difference]: Without dead ends: 3748 [2022-07-22 19:33:02,688 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 19:33:02,690 INFO L413 NwaCegarLoop]: 4332 mSDtfsCounter, 4476 mSDsluCounter, 16638 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 20970 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:02,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4486 Valid, 20970 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:33:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-07-22 19:33:02,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3397. [2022-07-22 19:33:02,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3397 states, 3218 states have (on average 1.7442510876320696) internal successors, (5613), 3229 states have internal predecessors, (5613), 115 states have call successors, (115), 55 states have call predecessors, (115), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-07-22 19:33:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3397 states to 3397 states and 5876 transitions. [2022-07-22 19:33:02,800 INFO L78 Accepts]: Start accepts. Automaton has 3397 states and 5876 transitions. Word has length 80 [2022-07-22 19:33:02,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:02,801 INFO L495 AbstractCegarLoop]: Abstraction has 3397 states and 5876 transitions. [2022-07-22 19:33:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:02,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3397 states and 5876 transitions. [2022-07-22 19:33:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:33:02,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:02,803 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] [2022-07-22 19:33:02,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:33:02,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:02,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1415739671, now seen corresponding path program 1 times [2022-07-22 19:33:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:02,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46425968] [2022-07-22 19:33:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:02,899 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 19:33:02,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:02,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46425968] [2022-07-22 19:33:02,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46425968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:02,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:02,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:02,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224647596] [2022-07-22 19:33:02,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:02,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:02,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:02,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:02,904 INFO L87 Difference]: Start difference. First operand 3397 states and 5876 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:04,056 INFO L93 Difference]: Finished difference Result 6787 states and 11028 transitions. [2022-07-22 19:33:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:33:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:04,083 INFO L225 Difference]: With dead ends: 6787 [2022-07-22 19:33:04,083 INFO L226 Difference]: Without dead ends: 5522 [2022-07-22 19:33:04,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:04,091 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 4607 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4621 SdHoareTripleChecker+Valid, 20956 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:04,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4621 Valid, 20956 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 19:33:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2022-07-22 19:33:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 4488. [2022-07-22 19:33:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4165 states have (on average 1.6900360144057622) internal successors, (7039), 4184 states have internal predecessors, (7039), 203 states have call successors, (203), 103 states have call predecessors, (203), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-07-22 19:33:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 7540 transitions. [2022-07-22 19:33:04,246 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 7540 transitions. Word has length 80 [2022-07-22 19:33:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:04,246 INFO L495 AbstractCegarLoop]: Abstraction has 4488 states and 7540 transitions. [2022-07-22 19:33:04,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 7540 transitions. [2022-07-22 19:33:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:33:04,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:04,250 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] [2022-07-22 19:33:04,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:33:04,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2095011925, now seen corresponding path program 1 times [2022-07-22 19:33:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:04,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484527634] [2022-07-22 19:33:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:04,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:04,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:04,324 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 19:33:04,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:04,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484527634] [2022-07-22 19:33:04,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484527634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:04,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:04,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:04,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371109797] [2022-07-22 19:33:04,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:04,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:04,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:04,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:04,327 INFO L87 Difference]: Start difference. First operand 4488 states and 7540 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:05,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:05,727 INFO L93 Difference]: Finished difference Result 10772 states and 17130 transitions. [2022-07-22 19:33:05,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:05,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:33:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:05,771 INFO L225 Difference]: With dead ends: 10772 [2022-07-22 19:33:05,771 INFO L226 Difference]: Without dead ends: 8416 [2022-07-22 19:33:05,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:05,785 INFO L413 NwaCegarLoop]: 4363 mSDtfsCounter, 4493 mSDsluCounter, 16627 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 20990 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:05,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 20990 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:33:05,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-07-22 19:33:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 6499. [2022-07-22 19:33:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6499 states, 5896 states have (on average 1.6290705563093624) internal successors, (9605), 5931 states have internal predecessors, (9605), 371 states have call successors, (371), 199 states have call predecessors, (371), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-07-22 19:33:06,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6499 states to 6499 states and 10620 transitions. [2022-07-22 19:33:06,112 INFO L78 Accepts]: Start accepts. Automaton has 6499 states and 10620 transitions. Word has length 80 [2022-07-22 19:33:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:06,112 INFO L495 AbstractCegarLoop]: Abstraction has 6499 states and 10620 transitions. [2022-07-22 19:33:06,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 6499 states and 10620 transitions. [2022-07-22 19:33:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:33:06,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:06,118 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] [2022-07-22 19:33:06,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:33:06,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:06,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:06,119 INFO L85 PathProgramCache]: Analyzing trace with hash -238380713, now seen corresponding path program 1 times [2022-07-22 19:33:06,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:06,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37774014] [2022-07-22 19:33:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:06,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:06,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:06,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:06,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:06,196 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 19:33:06,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37774014] [2022-07-22 19:33:06,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37774014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:06,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:06,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124491033] [2022-07-22 19:33:06,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:06,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:06,199 INFO L87 Difference]: Start difference. First operand 6499 states and 10620 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:07,640 INFO L93 Difference]: Finished difference Result 17486 states and 27496 transitions. [2022-07-22 19:33:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:07,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:33:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:07,709 INFO L225 Difference]: With dead ends: 17486 [2022-07-22 19:33:07,709 INFO L226 Difference]: Without dead ends: 13119 [2022-07-22 19:33:07,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:07,730 INFO L413 NwaCegarLoop]: 4313 mSDtfsCounter, 4484 mSDsluCounter, 16630 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 20943 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:07,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 20943 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 19:33:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13119 states. [2022-07-22 19:33:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13119 to 10695. [2022-07-22 19:33:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10695 states, 9548 states have (on average 1.581587767071638) internal successors, (15101), 9615 states have internal predecessors, (15101), 691 states have call successors, (691), 391 states have call predecessors, (691), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-07-22 19:33:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10695 states to 10695 states and 17274 transitions. [2022-07-22 19:33:08,193 INFO L78 Accepts]: Start accepts. Automaton has 10695 states and 17274 transitions. Word has length 80 [2022-07-22 19:33:08,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:08,195 INFO L495 AbstractCegarLoop]: Abstraction has 10695 states and 17274 transitions. [2022-07-22 19:33:08,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:08,197 INFO L276 IsEmpty]: Start isEmpty. Operand 10695 states and 17274 transitions. [2022-07-22 19:33:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 19:33:08,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:08,207 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] [2022-07-22 19:33:08,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:33:08,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:08,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash 322319065, now seen corresponding path program 1 times [2022-07-22 19:33:08,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:08,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76100454] [2022-07-22 19:33:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:08,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:08,295 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 19:33:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:08,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76100454] [2022-07-22 19:33:08,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76100454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:08,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:08,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:33:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53936247] [2022-07-22 19:33:08,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:08,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:33:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:08,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:33:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:33:08,297 INFO L87 Difference]: Start difference. First operand 10695 states and 17274 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:09,722 INFO L93 Difference]: Finished difference Result 26313 states and 41362 transitions. [2022-07-22 19:33:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:33:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-22 19:33:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:09,794 INFO L225 Difference]: With dead ends: 26313 [2022-07-22 19:33:09,794 INFO L226 Difference]: Without dead ends: 17751 [2022-07-22 19:33:09,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 19:33:09,831 INFO L413 NwaCegarLoop]: 4400 mSDtfsCounter, 4644 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:09,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4671 Valid, 16755 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 19:33:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17751 states. [2022-07-22 19:33:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17751 to 14888. [2022-07-22 19:33:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 13146 states have (on average 1.5442720219078045) internal successors, (20301), 13278 states have internal predecessors, (20301), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-07-22 19:33:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 23448 transitions. [2022-07-22 19:33:10,477 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 23448 transitions. Word has length 80 [2022-07-22 19:33:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:10,477 INFO L495 AbstractCegarLoop]: Abstraction has 14888 states and 23448 transitions. [2022-07-22 19:33:10,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 23448 transitions. [2022-07-22 19:33:10,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 19:33:10,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:10,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:10,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:33:10,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:10,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2072406432, now seen corresponding path program 1 times [2022-07-22 19:33:10,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:10,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793620109] [2022-07-22 19:33:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:10,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:33:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,652 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:33:10,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:10,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793620109] [2022-07-22 19:33:10,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793620109] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:33:10,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575410889] [2022-07-22 19:33:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:10,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:10,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:10,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:33:10,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:33:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:10,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:33:10,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:33:10,844 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 19:33:10,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:33:10,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575410889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:10,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:33:10,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:33:10,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522851056] [2022-07-22 19:33:10,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:10,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:33:10,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:33:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:10,846 INFO L87 Difference]: Start difference. First operand 14888 states and 23448 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 19:33:11,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:11,720 INFO L93 Difference]: Finished difference Result 40051 states and 62244 transitions. [2022-07-22 19:33:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:33:11,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-07-22 19:33:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:11,836 INFO L225 Difference]: With dead ends: 40051 [2022-07-22 19:33:11,837 INFO L226 Difference]: Without dead ends: 27296 [2022-07-22 19:33:11,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:11,896 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4148 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4148 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:11,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4148 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:33:11,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2022-07-22 19:33:12,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 27096. [2022-07-22 19:33:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27096 states, 23670 states have (on average 1.514321926489227) internal successors, (35844), 23931 states have internal predecessors, (35844), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-07-22 19:33:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27096 states to 27096 states and 41965 transitions. [2022-07-22 19:33:13,095 INFO L78 Accepts]: Start accepts. Automaton has 27096 states and 41965 transitions. Word has length 129 [2022-07-22 19:33:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:13,095 INFO L495 AbstractCegarLoop]: Abstraction has 27096 states and 41965 transitions. [2022-07-22 19:33:13,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 19:33:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 27096 states and 41965 transitions. [2022-07-22 19:33:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 19:33:13,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:13,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:13,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 19:33:13,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:13,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:13,378 INFO L85 PathProgramCache]: Analyzing trace with hash -853257536, now seen corresponding path program 1 times [2022-07-22 19:33:13,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:13,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468816664] [2022-07-22 19:33:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:13,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:13,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:33:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:33:13,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468816664] [2022-07-22 19:33:13,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468816664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:33:13,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934607300] [2022-07-22 19:33:13,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:13,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:13,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:13,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:33:13,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 19:33:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:13,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:33:13,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:33:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 19:33:13,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:33:13,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934607300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:13,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:33:13,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:33:13,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141378868] [2022-07-22 19:33:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:33:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:33:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:13,681 INFO L87 Difference]: Start difference. First operand 27096 states and 41965 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 19:33:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:15,250 INFO L93 Difference]: Finished difference Result 76329 states and 117663 transitions. [2022-07-22 19:33:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:33:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-07-22 19:33:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:15,521 INFO L225 Difference]: With dead ends: 76329 [2022-07-22 19:33:15,522 INFO L226 Difference]: Without dead ends: 51366 [2022-07-22 19:33:15,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:15,606 INFO L413 NwaCegarLoop]: 4204 mSDtfsCounter, 4142 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4142 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:15,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4142 Valid, 4414 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:33:15,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51366 states. [2022-07-22 19:33:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51366 to 50970. [2022-07-22 19:33:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50970 states, 44226 states have (on average 1.4955908289241622) internal successors, (66144), 44745 states have internal predecessors, (66144), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-07-22 19:33:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50970 states to 50970 states and 78113 transitions. [2022-07-22 19:33:17,845 INFO L78 Accepts]: Start accepts. Automaton has 50970 states and 78113 transitions. Word has length 129 [2022-07-22 19:33:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:17,846 INFO L495 AbstractCegarLoop]: Abstraction has 50970 states and 78113 transitions. [2022-07-22 19:33:17,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 19:33:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 50970 states and 78113 transitions. [2022-07-22 19:33:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 19:33:17,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:17,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:17,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 19:33:18,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 19:33:18,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:18,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2127588384, now seen corresponding path program 1 times [2022-07-22 19:33:18,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:18,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325100230] [2022-07-22 19:33:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 19:33:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:33:18,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:18,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325100230] [2022-07-22 19:33:18,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325100230] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:33:18,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632366326] [2022-07-22 19:33:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:18,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:18,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:18,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:33:18,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 19:33:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:18,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:33:18,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:33:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 19:33:18,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:33:18,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632366326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:18,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:33:18,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:33:18,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855490639] [2022-07-22 19:33:18,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:18,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:33:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:33:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:18,402 INFO L87 Difference]: Start difference. First operand 50970 states and 78113 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 19:33:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:21,620 INFO L93 Difference]: Finished difference Result 146009 states and 224673 transitions. [2022-07-22 19:33:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:33:21,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2022-07-22 19:33:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:22,240 INFO L225 Difference]: With dead ends: 146009 [2022-07-22 19:33:22,240 INFO L226 Difference]: Without dead ends: 97173 [2022-07-22 19:33:22,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:22,360 INFO L413 NwaCegarLoop]: 4394 mSDtfsCounter, 194 mSDsluCounter, 4192 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8586 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:22,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8586 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:33:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97173 states. [2022-07-22 19:33:26,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97173 to 97173. [2022-07-22 19:33:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97173 states, 83954 states have (on average 1.4752245277175595) internal successors, (123851), 84858 states have internal predecessors, (123851), 7745 states have call successors, (7745), 4705 states have call predecessors, (7745), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046) [2022-07-22 19:33:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97173 states to 97173 states and 148642 transitions. [2022-07-22 19:33:26,912 INFO L78 Accepts]: Start accepts. Automaton has 97173 states and 148642 transitions. Word has length 129 [2022-07-22 19:33:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:26,915 INFO L495 AbstractCegarLoop]: Abstraction has 97173 states and 148642 transitions. [2022-07-22 19:33:26,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 19:33:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 97173 states and 148642 transitions. [2022-07-22 19:33:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 19:33:27,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:27,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:33:27,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 19:33:27,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:27,446 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -318020336, now seen corresponding path program 1 times [2022-07-22 19:33:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:27,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200437441] [2022-07-22 19:33:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 19:33:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 19:33:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 19:33:27,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:27,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200437441] [2022-07-22 19:33:27,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200437441] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:33:27,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693576695] [2022-07-22 19:33:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:27,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:27,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:27,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:33:27,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 19:33:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:27,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:33:27,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:33:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 19:33:27,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:33:27,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693576695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:27,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:33:27,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:33:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854864891] [2022-07-22 19:33:27,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:27,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:33:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:33:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:27,847 INFO L87 Difference]: Start difference. First operand 97173 states and 148642 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 19:33:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:34,226 INFO L93 Difference]: Finished difference Result 282449 states and 433585 transitions. [2022-07-22 19:33:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:33:34,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-07-22 19:33:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:35,542 INFO L225 Difference]: With dead ends: 282449 [2022-07-22 19:33:35,543 INFO L226 Difference]: Without dead ends: 187415 [2022-07-22 19:33:35,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:35,793 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4098 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:35,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4417 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:33:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187415 states. [2022-07-22 19:33:42,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187415 to 185843. [2022-07-22 19:33:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185843 states, 160780 states have (on average 1.4701890782435627) internal successors, (236377), 162584 states have internal predecessors, (236377), 14407 states have call successors, (14407), 9119 states have call predecessors, (14407), 10654 states have return successors, (32274), 14267 states have call predecessors, (32274), 14405 states have call successors, (32274) [2022-07-22 19:33:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185843 states to 185843 states and 283058 transitions. [2022-07-22 19:33:43,762 INFO L78 Accepts]: Start accepts. Automaton has 185843 states and 283058 transitions. Word has length 167 [2022-07-22 19:33:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:43,763 INFO L495 AbstractCegarLoop]: Abstraction has 185843 states and 283058 transitions. [2022-07-22 19:33:43,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 19:33:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 185843 states and 283058 transitions. [2022-07-22 19:33:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-22 19:33:44,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:44,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:33:44,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 19:33:44,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:44,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:44,965 INFO L85 PathProgramCache]: Analyzing trace with hash 159535236, now seen corresponding path program 1 times [2022-07-22 19:33:44,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:44,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289913448] [2022-07-22 19:33:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:44,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 19:33:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 19:33:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 19:33:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 19:33:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 19:33:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 19:33:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 19:33:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:33:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 19:33:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 19:33:45,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:45,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289913448] [2022-07-22 19:33:45,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289913448] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:33:45,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036535839] [2022-07-22 19:33:45,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:45,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:33:45,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:45,092 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:33:45,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 19:33:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:45,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:33:45,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:33:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 19:33:45,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:33:45,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036535839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:45,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:33:45,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 19:33:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012282764] [2022-07-22 19:33:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:33:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:33:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:33:45,327 INFO L87 Difference]: Start difference. First operand 185843 states and 283058 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)