./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.06.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 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:56:04,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:56:04,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:56:04,748 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:56:04,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:56:04,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:56:04,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:56:04,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:56:04,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:56:04,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:56:04,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:56:04,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:56:04,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:56:04,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:56:04,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:56:04,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:56:04,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:56:04,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:56:04,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:56:04,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:56:04,781 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:56:04,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:56:04,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:56:04,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:56:04,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:56:04,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:56:04,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:56:04,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:56:04,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:56:04,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:56:04,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:56:04,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:56:04,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:56:04,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:56:04,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:56:04,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:56:04,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:56:04,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:56:04,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:56:04,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:56:04,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:56:04,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:56:04,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:56:04,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:56:04,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:56:04,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:56:04,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:56:04,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:56:04,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:56:04,834 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:56:04,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:56:04,835 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:56:04,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:56:04,836 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:56:04,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:56:04,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:56:04,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:56:04,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:56:04,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:56:04,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:56:04,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:56:04,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:56:04,838 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:56:04,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:56:04,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:56:04,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:56:04,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:56:04,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:56:04,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:56:04,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:56:04,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:56:04,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:56:04,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:56:04,841 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:56:04,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:56:04,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:56:04,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf [2022-07-13 19:56:05,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:56:05,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:56:05,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:56:05,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:56:05,079 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:56:05,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2022-07-13 19:56:05,149 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ffc5c8b/01e09c5b560d450a89889d68dd69cca6/FLAG78ad4b214 [2022-07-13 19:56:06,063 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:56:06,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2022-07-13 19:56:06,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ffc5c8b/01e09c5b560d450a89889d68dd69cca6/FLAG78ad4b214 [2022-07-13 19:56:06,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ffc5c8b/01e09c5b560d450a89889d68dd69cca6 [2022-07-13 19:56:06,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:56:06,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:56:06,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:56:06,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:56:06,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:56:06,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:56:06" (1/1) ... [2022-07-13 19:56:06,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1feda79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:06, skipping insertion in model container [2022-07-13 19:56:06,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:56:06" (1/1) ... [2022-07-13 19:56:06,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:56:06,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:56:08,511 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.06.cil-1.c[381679,381692] [2022-07-13 19:56:08,532 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.06.cil-1.c[383339,383352] [2022-07-13 19:56:08,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:56:08,742 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:56:09,559 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.06.cil-1.c[381679,381692] [2022-07-13 19:56:09,572 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.06.cil-1.c[383339,383352] [2022-07-13 19:56:09,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:56:09,664 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:56:09,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09 WrapperNode [2022-07-13 19:56:09,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:56:09,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:56:09,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:56:09,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:56:09,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:09,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,124 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2022-07-13 19:56:10,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:56:10,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:56:10,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:56:10,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:56:10,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:56:10,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:56:10,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:56:10,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:56:10,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (1/1) ... [2022-07-13 19:56:10,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:56:10,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:56:10,861 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) [2022-07-13 19:56:10,872 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 [2022-07-13 19:56:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:56:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:56:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:56:10,896 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:56:10,896 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:56:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:56:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:56:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 19:56:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 19:56:10,897 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:56:10,897 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:56:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:56:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:56:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:56:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:56:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:56:10,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:56:10,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:56:10,995 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:56:10,997 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:56:16,955 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:56:16,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:56:16,984 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-13 19:56:16,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:56:16 BoogieIcfgContainer [2022-07-13 19:56:16,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:56:16,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:56:16,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:56:16,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:56:16,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:56:06" (1/3) ... [2022-07-13 19:56:16,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dcaf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:56:16, skipping insertion in model container [2022-07-13 19:56:16,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:56:09" (2/3) ... [2022-07-13 19:56:16,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35dcaf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:56:16, skipping insertion in model container [2022-07-13 19:56:16,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:56:16" (3/3) ... [2022-07-13 19:56:16,994 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.06.cil-1.c [2022-07-13 19:56:17,006 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:56:17,006 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:56:17,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:56:17,100 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@3fb82305, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@69522e41 [2022-07-13 19:56:17,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:56:17,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-13 19:56:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:17,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:17,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:17,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2022-07-13 19:56:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:17,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64947180] [2022-07-13 19:56:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:17,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:17,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:17,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64947180] [2022-07-13 19:56:17,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64947180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:17,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:17,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:56:17,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669672524] [2022-07-13 19:56:17,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:17,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:56:17,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:17,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:56:17,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:56:17,503 INFO L87 Difference]: Start difference. First operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:18,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:18,480 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2022-07-13 19:56:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:56:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-13 19:56:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:18,506 INFO L225 Difference]: With dead ends: 4911 [2022-07-13 19:56:18,507 INFO L226 Difference]: Without dead ends: 2431 [2022-07-13 19:56:18,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:56:18,523 INFO L413 NwaCegarLoop]: 4417 mSDtfsCounter, 596 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 16744 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:18,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 16744 Invalid, 458 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 19:56:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2022-07-13 19:56:18,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2022-07-13 19:56:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2325 states have (on average 1.8391397849462365) internal successors, (4276), 2328 states have internal predecessors, (4276), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-13 19:56:18,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2022-07-13 19:56:18,647 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2022-07-13 19:56:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:18,648 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2022-07-13 19:56:18,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 19:56:18,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2022-07-13 19:56:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:18,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:18,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:18,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:56:18,653 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2022-07-13 19:56:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:18,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420307160] [2022-07-13 19:56:18,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:18,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:18,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:18,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:18,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420307160] [2022-07-13 19:56:18,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420307160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:18,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:18,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:18,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533543113] [2022-07-13 19:56:18,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:18,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:18,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:18,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:18,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:18,941 INFO L87 Difference]: Start difference. First operand 2355 states and 4318 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:20,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:20,952 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2022-07-13 19:56:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:20,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:20,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:20,967 INFO L225 Difference]: With dead ends: 2966 [2022-07-13 19:56:20,968 INFO L226 Difference]: Without dead ends: 2746 [2022-07-13 19:56:20,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:20,971 INFO L413 NwaCegarLoop]: 4564 mSDtfsCounter, 4790 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 21585 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:20,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 21585 Invalid, 1950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 19:56:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-07-13 19:56:21,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2022-07-13 19:56:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2528 states have (on average 1.8184335443037976) internal successors, (4597), 2533 states have internal predecessors, (4597), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-13 19:56:21,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2022-07-13 19:56:21,051 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2022-07-13 19:56:21,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:21,052 INFO L495 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2022-07-13 19:56:21,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:21,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2022-07-13 19:56:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:21,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:21,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:21,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:56:21,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2022-07-13 19:56:21,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:21,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585353820] [2022-07-13 19:56:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:21,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:21,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:21,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585353820] [2022-07-13 19:56:21,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585353820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:21,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:21,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867440009] [2022-07-13 19:56:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:21,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:21,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:21,194 INFO L87 Difference]: Start difference. First operand 2583 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:23,104 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2022-07-13 19:56:23,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:23,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:23,123 INFO L225 Difference]: With dead ends: 3740 [2022-07-13 19:56:23,123 INFO L226 Difference]: Without dead ends: 3294 [2022-07-13 19:56:23,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:23,134 INFO L413 NwaCegarLoop]: 4511 mSDtfsCounter, 4814 mSDsluCounter, 16958 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:23,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4827 Valid, 21469 Invalid, 1861 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 19:56:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2022-07-13 19:56:23,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2022-07-13 19:56:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2904 states have (on average 1.7837465564738293) internal successors, (5180), 2911 states have internal predecessors, (5180), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-07-13 19:56:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2022-07-13 19:56:23,262 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2022-07-13 19:56:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:23,262 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2022-07-13 19:56:23,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2022-07-13 19:56:23,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:23,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:23,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:23,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:56:23,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2022-07-13 19:56:23,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:23,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225688000] [2022-07-13 19:56:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:23,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225688000] [2022-07-13 19:56:23,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225688000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:23,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:23,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:23,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604592377] [2022-07-13 19:56:23,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:23,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:23,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:23,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:23,399 INFO L87 Difference]: Start difference. First operand 3003 states and 5333 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:25,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:25,365 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2022-07-13 19:56:25,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:25,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:25,390 INFO L225 Difference]: With dead ends: 5254 [2022-07-13 19:56:25,390 INFO L226 Difference]: Without dead ends: 4388 [2022-07-13 19:56:25,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:25,398 INFO L413 NwaCegarLoop]: 4555 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21576 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:25,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21576 Invalid, 1949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 19:56:25,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-07-13 19:56:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2022-07-13 19:56:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3658 states have (on average 1.7353745215965009) internal successors, (6348), 3669 states have internal predecessors, (6348), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-07-13 19:56:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2022-07-13 19:56:25,591 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2022-07-13 19:56:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:25,597 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2022-07-13 19:56:25,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2022-07-13 19:56:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:25,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:25,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:25,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:56:25,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:25,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2022-07-13 19:56:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582773076] [2022-07-13 19:56:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:25,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:25,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582773076] [2022-07-13 19:56:25,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582773076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:25,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:25,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:25,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462036590] [2022-07-13 19:56:25,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:25,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:25,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:25,730 INFO L87 Difference]: Start difference. First operand 3845 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:27,630 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2022-07-13 19:56:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:27,668 INFO L225 Difference]: With dead ends: 8280 [2022-07-13 19:56:27,668 INFO L226 Difference]: Without dead ends: 6572 [2022-07-13 19:56:27,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:27,678 INFO L413 NwaCegarLoop]: 4552 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21573 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:27,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21573 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 19:56:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2022-07-13 19:56:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2022-07-13 19:56:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5172 states have (on average 1.6805877803557618) internal successors, (8692), 5191 states have internal predecessors, (8692), 249 states have call successors, (249), 97 states have call predecessors, (249), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-07-13 19:56:27,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2022-07-13 19:56:27,930 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2022-07-13 19:56:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:27,931 INFO L495 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2022-07-13 19:56:27,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2022-07-13 19:56:27,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:27,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:27,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:56:27,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2022-07-13 19:56:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:27,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053502810] [2022-07-13 19:56:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:27,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:28,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:28,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053502810] [2022-07-13 19:56:28,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053502810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:28,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:28,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:28,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684118290] [2022-07-13 19:56:28,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:28,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:28,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:28,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:28,062 INFO L87 Difference]: Start difference. First operand 5535 states and 9301 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:30,146 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2022-07-13 19:56:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:30,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:30,210 INFO L225 Difference]: With dead ends: 14330 [2022-07-13 19:56:30,210 INFO L226 Difference]: Without dead ends: 10932 [2022-07-13 19:56:30,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:30,228 INFO L413 NwaCegarLoop]: 4549 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21570 SdHoareTripleChecker+Invalid, 1937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:30,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21570 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 19:56:30,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2022-07-13 19:56:30,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2022-07-13 19:56:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8214 states have (on average 1.6313610908205503) internal successors, (13400), 8249 states have internal predecessors, (13400), 489 states have call successors, (489), 193 states have call predecessors, (489), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-07-13 19:56:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2022-07-13 19:56:30,642 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2022-07-13 19:56:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:30,642 INFO L495 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2022-07-13 19:56:30,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2022-07-13 19:56:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:30,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:30,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:30,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:56:30,650 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:30,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2022-07-13 19:56:30,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:30,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165652035] [2022-07-13 19:56:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:30,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:30,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:30,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:30,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165652035] [2022-07-13 19:56:30,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165652035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:30,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:30,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:30,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245191794] [2022-07-13 19:56:30,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:30,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:30,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:30,763 INFO L87 Difference]: Start difference. First operand 8929 states and 14683 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:32,992 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2022-07-13 19:56:32,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:56:32,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:33,075 INFO L225 Difference]: With dead ends: 26428 [2022-07-13 19:56:33,075 INFO L226 Difference]: Without dead ends: 19636 [2022-07-13 19:56:33,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:56:33,111 INFO L413 NwaCegarLoop]: 4546 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21567 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:33,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21567 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:56:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2022-07-13 19:56:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2022-07-13 19:56:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5954773869346734) internal successors, (22860), 14395 states have internal predecessors, (22860), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-07-13 19:56:33,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2022-07-13 19:56:33,888 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2022-07-13 19:56:33,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:33,888 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2022-07-13 19:56:33,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:33,888 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2022-07-13 19:56:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:33,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:33,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:56:33,900 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2022-07-13 19:56:33,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:33,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236736417] [2022-07-13 19:56:33,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:33,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:33,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:33,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:33,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:33,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:33,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236736417] [2022-07-13 19:56:33,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236736417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:33,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:33,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495485789] [2022-07-13 19:56:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:33,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:33,987 INFO L87 Difference]: Start difference. First operand 15747 states and 25653 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:37,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:37,268 INFO L93 Difference]: Finished difference Result 56574 states and 91179 transitions. [2022-07-13 19:56:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:56:37,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:37,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:37,478 INFO L225 Difference]: With dead ends: 56574 [2022-07-13 19:56:37,478 INFO L226 Difference]: Without dead ends: 42964 [2022-07-13 19:56:37,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:56:37,545 INFO L413 NwaCegarLoop]: 4539 mSDtfsCounter, 5044 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5064 SdHoareTripleChecker+Valid, 21552 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:37,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5064 Valid, 21552 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 19:56:37,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42964 states. [2022-07-13 19:56:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42964 to 29253. [2022-07-13 19:56:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29253 states, 26490 states have (on average 1.575839939599849) internal successors, (41744), 26621 states have internal predecessors, (41744), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-07-13 19:56:39,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 47915 transitions. [2022-07-13 19:56:39,171 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 47915 transitions. Word has length 113 [2022-07-13 19:56:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:39,171 INFO L495 AbstractCegarLoop]: Abstraction has 29253 states and 47915 transitions. [2022-07-13 19:56:39,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 47915 transitions. [2022-07-13 19:56:39,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:39,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:39,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:39,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:56:39,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2022-07-13 19:56:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:39,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523038098] [2022-07-13 19:56:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:39,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:39,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:39,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:39,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:39,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523038098] [2022-07-13 19:56:39,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523038098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:39,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:39,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:39,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646001685] [2022-07-13 19:56:39,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:39,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:39,301 INFO L87 Difference]: Start difference. First operand 29253 states and 47915 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:44,845 INFO L93 Difference]: Finished difference Result 107011 states and 175039 transitions. [2022-07-13 19:56:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:56:44,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:45,327 INFO L225 Difference]: With dead ends: 107011 [2022-07-13 19:56:45,328 INFO L226 Difference]: Without dead ends: 79895 [2022-07-13 19:56:45,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:56:45,412 INFO L413 NwaCegarLoop]: 4531 mSDtfsCounter, 4978 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4998 SdHoareTripleChecker+Valid, 21544 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:56:45,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4998 Valid, 21544 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:56:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2022-07-13 19:56:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 56327. [2022-07-13 19:56:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56327 states, 50940 states have (on average 1.5670985473105614) internal successors, (79828), 51199 states have internal predecessors, (79828), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-07-13 19:56:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56327 states to 56327 states and 94085 transitions. [2022-07-13 19:56:49,135 INFO L78 Accepts]: Start accepts. Automaton has 56327 states and 94085 transitions. Word has length 113 [2022-07-13 19:56:49,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:56:49,135 INFO L495 AbstractCegarLoop]: Abstraction has 56327 states and 94085 transitions. [2022-07-13 19:56:49,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:49,136 INFO L276 IsEmpty]: Start isEmpty. Operand 56327 states and 94085 transitions. [2022-07-13 19:56:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:56:49,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:56:49,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:56:49,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:56:49,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:56:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:56:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2022-07-13 19:56:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:56:49,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864790658] [2022-07-13 19:56:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:56:49,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:56:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:56:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:56:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:56:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:56:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:56:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:56:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:56:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:56:49,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864790658] [2022-07-13 19:56:49,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864790658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:56:49,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:56:49,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:56:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063128716] [2022-07-13 19:56:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:56:49,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:56:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:56:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:56:49,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:56:49,291 INFO L87 Difference]: Start difference. First operand 56327 states and 94085 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:56:59,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:56:59,132 INFO L93 Difference]: Finished difference Result 207177 states and 347363 transitions. [2022-07-13 19:56:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 19:56:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 113 [2022-07-13 19:56:59,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:56:59,937 INFO L225 Difference]: With dead ends: 207177 [2022-07-13 19:56:59,938 INFO L226 Difference]: Without dead ends: 152987 [2022-07-13 19:57:00,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 19:57:00,151 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 4951 mSDsluCounter, 16953 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4971 SdHoareTripleChecker+Valid, 21449 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:57:00,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4971 Valid, 21449 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:57:00,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152987 states. [2022-07-13 19:57:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152987 to 110347. [2022-07-13 19:57:06,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110347 states, 99840 states have (on average 1.563741987179487) internal successors, (156124), 100355 states have internal predecessors, (156124), 6921 states have call successors, (6921), 3073 states have call predecessors, (6921), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2022-07-13 19:57:07,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110347 states to 110347 states and 190671 transitions. [2022-07-13 19:57:07,111 INFO L78 Accepts]: Start accepts. Automaton has 110347 states and 190671 transitions. Word has length 113 [2022-07-13 19:57:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:57:07,112 INFO L495 AbstractCegarLoop]: Abstraction has 110347 states and 190671 transitions. [2022-07-13 19:57:07,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2022-07-13 19:57:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 110347 states and 190671 transitions. [2022-07-13 19:57:07,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 19:57:07,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:57:07,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:57:07,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:57:07,234 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:57:07,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:57:07,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1374174658, now seen corresponding path program 1 times [2022-07-13 19:57:07,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:57:07,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032845239] [2022-07-13 19:57:07,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:57:07,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:57:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:57:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:57:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:07,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:57:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 19:57:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:07,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 19:57:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:57:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:57:07,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:57:07,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032845239] [2022-07-13 19:57:07,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032845239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:57:07,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:57:07,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:57:07,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191981871] [2022-07-13 19:57:07,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:57:07,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:57:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:57:07,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:57:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:57:07,595 INFO L87 Difference]: Start difference. First operand 110347 states and 190671 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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)