./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.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-?-791161d [2022-07-22 19:33:23,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:33:23,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:33:23,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:33:23,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:33:23,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:33:23,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:33:23,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:33:23,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:33:23,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:33:23,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:33:23,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:33:23,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:33:23,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:33:23,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:33:23,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:33:23,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:33:23,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:33:23,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:33:23,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:33:23,901 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:33:23,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:33:23,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:33:23,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:33:23,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:33:23,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:33:23,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:33:23,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:33:23,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:33:23,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:33:23,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:33:23,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:33:23,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:33:23,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:33:23,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:33:23,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:33:23,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:33:23,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:33:23,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:33:23,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:33:23,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:33:23,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:33:23,919 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:33:23,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:33:23,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:33:23,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:33:23,934 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:33:23,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:33:23,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:33:23,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:33:23,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:33:23,936 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:33:23,936 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:33:23,936 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:33:23,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:33:23,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:33:23,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:33:23,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:33:23,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:33:23,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:33:23,937 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:33:23,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:33:23,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:33:23,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:33:23,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:33:23,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:33:23,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:33:23,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:23,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:33:23,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:33:23,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:33:23,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:33:23,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:33:23,940 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:33:23,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:33:23,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:33:23,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 653a8e34239233d69d9a38d78b85981ab63654836b879da54ad0b88422f00ccf [2022-07-22 19:33:24,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:33:24,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:33:24,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:33:24,150 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:33:24,150 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:33:24,151 INFO L432 ainManager$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 [2022-07-22 19:33:24,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe5fedd1/3cb2982f731a46d5bf2f33b2bf7e016c/FLAGde1eaf290 [2022-07-22 19:33:24,933 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:33:24,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.06.cil-1.c [2022-07-22 19:33:24,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe5fedd1/3cb2982f731a46d5bf2f33b2bf7e016c/FLAGde1eaf290 [2022-07-22 19:33:25,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe5fedd1/3cb2982f731a46d5bf2f33b2bf7e016c [2022-07-22 19:33:25,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:33:25,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:33:25,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:25,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:33:25,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:33:25,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:25" (1/1) ... [2022-07-22 19:33:25,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4468a15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:25, skipping insertion in model container [2022-07-22 19:33:25,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:25" (1/1) ... [2022-07-22 19:33:25,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:33:25,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:33:26,664 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] [2022-07-22 19:33:26,683 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] [2022-07-22 19:33:26,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:26,840 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:33:27,407 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] [2022-07-22 19:33:27,414 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] [2022-07-22 19:33:27,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:27,477 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:33:27,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27 WrapperNode [2022-07-22 19:33:27,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:27,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:27,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:33:27,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:33:27,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:27,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:27,782 INFO L137 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2022-07-22 19:33:27,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:27,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:33:27,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:33:27,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:33:27,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:27,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:27,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:27,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:28,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:28,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:28,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:28,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:33:28,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:33:28,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:33:28,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:33:28,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (1/1) ... [2022-07-22 19:33:28,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:28,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:28,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:33:28,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:33:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:33:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:33:28,436 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:33:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:33:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:33:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:33:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:33:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:33:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:33:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:33:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:33:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:33:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:33:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:33:28,438 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:33:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:33:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:33:28,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:33:28,564 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:33:28,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:33:33,261 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:33:33,277 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:33:33,278 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-22 19:33:33,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:33:33 BoogieIcfgContainer [2022-07-22 19:33:33,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:33:33,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:33:33,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:33:33,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:33:33,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:33:25" (1/3) ... [2022-07-22 19:33:33,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49531614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:33:33, skipping insertion in model container [2022-07-22 19:33:33,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:27" (2/3) ... [2022-07-22 19:33:33,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49531614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:33:33, skipping insertion in model container [2022-07-22 19:33:33,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:33:33" (3/3) ... [2022-07-22 19:33:33,287 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.06.cil-1.c [2022-07-22 19:33:33,296 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:33:33,297 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:33:33,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:33:33,361 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@7a1810ba, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@53c7d093 [2022-07-22 19:33:33,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:33:33,372 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) [2022-07-22 19:33:33,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:33,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:33,384 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] [2022-07-22 19:33:33,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:33,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:33,388 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2022-07-22 19:33:33,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:33,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725768263] [2022-07-22 19:33:33,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:33,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:33,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:33,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725768263] [2022-07-22 19:33:33,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725768263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:33,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:33,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:33:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153147146] [2022-07-22 19:33:33,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:33,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:33:33,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:33:33,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:33:33,647 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) [2022-07-22 19:33:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:34,757 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2022-07-22 19:33:34,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:33:34,759 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 [2022-07-22 19:33:34,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:34,786 INFO L225 Difference]: With dead ends: 4911 [2022-07-22 19:33:34,786 INFO L226 Difference]: Without dead ends: 2431 [2022-07-22 19:33:34,798 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 [2022-07-22 19:33:34,803 INFO L413 NwaCegarLoop]: 4417 mSDtfsCounter, 596 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2022-07-22 19:33:34,804 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] [2022-07-22 19:33:34,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2022-07-22 19:33:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2022-07-22 19:33:34,918 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) [2022-07-22 19:33:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2022-07-22 19:33:34,929 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2022-07-22 19:33:34,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:34,930 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2022-07-22 19:33:34,931 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) [2022-07-22 19:33:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2022-07-22 19:33:34,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:34,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:34,938 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] [2022-07-22 19:33:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:33:34,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2022-07-22 19:33:34,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:34,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989503741] [2022-07-22 19:33:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:34,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:35,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:35,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:35,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:35,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989503741] [2022-07-22 19:33:35,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989503741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:35,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:35,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630341221] [2022-07-22 19:33:35,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:35,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:35,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:35,114 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) [2022-07-22 19:33:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:36,868 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2022-07-22 19:33:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:36,869 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 [2022-07-22 19:33:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:36,880 INFO L225 Difference]: With dead ends: 2966 [2022-07-22 19:33:36,880 INFO L226 Difference]: Without dead ends: 2746 [2022-07-22 19:33:36,883 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 [2022-07-22 19:33:36,884 INFO L413 NwaCegarLoop]: 4564 mSDtfsCounter, 4790 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:36,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4803 Valid, 21585 Invalid, 1950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:33:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-07-22 19:33:36,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2022-07-22 19:33:36,947 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) [2022-07-22 19:33:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2022-07-22 19:33:36,956 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2022-07-22 19:33:36,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:36,957 INFO L495 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2022-07-22 19:33:36,958 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) [2022-07-22 19:33:36,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2022-07-22 19:33:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:36,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:36,965 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] [2022-07-22 19:33:36,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:33:36,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2022-07-22 19:33:36,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:36,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478130543] [2022-07-22 19:33:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:36,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:37,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:37,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:37,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:37,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478130543] [2022-07-22 19:33:37,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478130543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:37,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:37,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886944419] [2022-07-22 19:33:37,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:37,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:37,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:37,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:37,141 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) [2022-07-22 19:33:38,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:38,700 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2022-07-22 19:33:38,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:38,700 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 [2022-07-22 19:33:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:38,712 INFO L225 Difference]: With dead ends: 3740 [2022-07-22 19:33:38,712 INFO L226 Difference]: Without dead ends: 3294 [2022-07-22 19:33:38,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:38,715 INFO L413 NwaCegarLoop]: 4511 mSDtfsCounter, 4814 mSDsluCounter, 16958 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 21469 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:38,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4827 Valid, 21469 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:33:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2022-07-22 19:33:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2022-07-22 19:33:38,776 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) [2022-07-22 19:33:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2022-07-22 19:33:38,788 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2022-07-22 19:33:38,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:38,788 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2022-07-22 19:33:38,789 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) [2022-07-22 19:33:38,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2022-07-22 19:33:38,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:38,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:38,791 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] [2022-07-22 19:33:38,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:33:38,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:38,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2022-07-22 19:33:38,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:38,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137290712] [2022-07-22 19:33:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:38,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:38,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:38,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:38,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:38,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:38,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137290712] [2022-07-22 19:33:38,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137290712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:38,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:38,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:38,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231231652] [2022-07-22 19:33:38,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:38,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:38,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:38,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:38,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:38,888 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) [2022-07-22 19:33:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:40,161 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2022-07-22 19:33:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:40,162 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 [2022-07-22 19:33:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:40,179 INFO L225 Difference]: With dead ends: 5254 [2022-07-22 19:33:40,181 INFO L226 Difference]: Without dead ends: 4388 [2022-07-22 19:33:40,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:40,191 INFO L413 NwaCegarLoop]: 4555 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21576 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:40,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21576 Invalid, 1949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:33:40,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-07-22 19:33:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2022-07-22 19:33:40,274 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) [2022-07-22 19:33:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2022-07-22 19:33:40,287 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2022-07-22 19:33:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:40,288 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2022-07-22 19:33:40,288 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) [2022-07-22 19:33:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2022-07-22 19:33:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:40,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:40,290 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] [2022-07-22 19:33:40,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:33:40,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:40,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2022-07-22 19:33:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:40,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577090812] [2022-07-22 19:33:40,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:40,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:40,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:40,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:40,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577090812] [2022-07-22 19:33:40,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577090812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:40,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:40,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:40,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425115584] [2022-07-22 19:33:40,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:40,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:40,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:40,368 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) [2022-07-22 19:33:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:42,120 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2022-07-22 19:33:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:42,120 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 [2022-07-22 19:33:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:42,161 INFO L225 Difference]: With dead ends: 8280 [2022-07-22 19:33:42,161 INFO L226 Difference]: Without dead ends: 6572 [2022-07-22 19:33:42,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:42,181 INFO L413 NwaCegarLoop]: 4552 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 21573 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:42,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21573 Invalid, 1943 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:33:42,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2022-07-22 19:33:42,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2022-07-22 19:33:42,399 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) [2022-07-22 19:33:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2022-07-22 19:33:42,414 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2022-07-22 19:33:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:42,414 INFO L495 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2022-07-22 19:33:42,415 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) [2022-07-22 19:33:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2022-07-22 19:33:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:42,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:42,418 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] [2022-07-22 19:33:42,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:33:42,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:42,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2022-07-22 19:33:42,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:42,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675373043] [2022-07-22 19:33:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:42,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:42,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:42,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:42,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:42,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675373043] [2022-07-22 19:33:42,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675373043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:42,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:42,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:42,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651447749] [2022-07-22 19:33:42,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:42,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:42,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:42,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:42,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:42,507 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) [2022-07-22 19:33:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:44,017 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2022-07-22 19:33:44,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:44,018 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 [2022-07-22 19:33:44,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:44,073 INFO L225 Difference]: With dead ends: 14330 [2022-07-22 19:33:44,074 INFO L226 Difference]: Without dead ends: 10932 [2022-07-22 19:33:44,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:44,089 INFO L413 NwaCegarLoop]: 4549 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:44,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21570 Invalid, 1937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:33:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2022-07-22 19:33:44,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2022-07-22 19:33:44,476 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) [2022-07-22 19:33:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2022-07-22 19:33:44,493 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2022-07-22 19:33:44,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:44,494 INFO L495 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2022-07-22 19:33:44,494 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) [2022-07-22 19:33:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2022-07-22 19:33:44,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:44,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:44,499 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] [2022-07-22 19:33:44,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:33:44,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:44,502 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2022-07-22 19:33:44,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:44,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893445008] [2022-07-22 19:33:44,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:44,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:44,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:44,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893445008] [2022-07-22 19:33:44,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893445008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:44,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:44,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:44,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172555743] [2022-07-22 19:33:44,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:44,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:44,580 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) [2022-07-22 19:33:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:46,531 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2022-07-22 19:33:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:33:46,531 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 [2022-07-22 19:33:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:46,595 INFO L225 Difference]: With dead ends: 26428 [2022-07-22 19:33:46,595 INFO L226 Difference]: Without dead ends: 19636 [2022-07-22 19:33:46,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:33:46,623 INFO L413 NwaCegarLoop]: 4546 mSDtfsCounter, 4789 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:46,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 21567 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:33:46,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2022-07-22 19:33:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2022-07-22 19:33:47,261 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) [2022-07-22 19:33:47,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2022-07-22 19:33:47,304 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2022-07-22 19:33:47,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:47,304 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2022-07-22 19:33:47,304 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) [2022-07-22 19:33:47,305 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2022-07-22 19:33:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:47,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:47,315 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] [2022-07-22 19:33:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:33:47,318 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2022-07-22 19:33:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:47,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172583648] [2022-07-22 19:33:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:47,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:47,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:47,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172583648] [2022-07-22 19:33:47,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172583648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:47,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:47,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305601784] [2022-07-22 19:33:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:47,408 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) [2022-07-22 19:33:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:50,673 INFO L93 Difference]: Finished difference Result 56574 states and 91179 transitions. [2022-07-22 19:33:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:50,673 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 [2022-07-22 19:33:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:50,817 INFO L225 Difference]: With dead ends: 56574 [2022-07-22 19:33:50,817 INFO L226 Difference]: Without dead ends: 42964 [2022-07-22 19:33:50,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:50,861 INFO L413 NwaCegarLoop]: 4539 mSDtfsCounter, 5044 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1839 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:50,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5064 Valid, 21552 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1839 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 19:33:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42964 states. [2022-07-22 19:33:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42964 to 29253. [2022-07-22 19:33:51,989 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) [2022-07-22 19:33:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 47915 transitions. [2022-07-22 19:33:52,065 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 47915 transitions. Word has length 113 [2022-07-22 19:33:52,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:52,067 INFO L495 AbstractCegarLoop]: Abstraction has 29253 states and 47915 transitions. [2022-07-22 19:33:52,067 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) [2022-07-22 19:33:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 47915 transitions. [2022-07-22 19:33:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:33:52,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:52,083 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] [2022-07-22 19:33:52,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:33:52,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:52,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2022-07-22 19:33:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:52,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198853836] [2022-07-22 19:33:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:33:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:52,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:33:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:33:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:52,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:33:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:33:52,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:52,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198853836] [2022-07-22 19:33:52,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198853836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:52,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:52,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:52,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745902750] [2022-07-22 19:33:52,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:52,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:52,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:52,172 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) [2022-07-22 19:33:57,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:57,388 INFO L93 Difference]: Finished difference Result 107011 states and 175039 transitions. [2022-07-22 19:33:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:33:57,389 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 [2022-07-22 19:33:57,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:57,758 INFO L225 Difference]: With dead ends: 107011 [2022-07-22 19:33:57,758 INFO L226 Difference]: Without dead ends: 79895 [2022-07-22 19:33:57,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:33:57,845 INFO L413 NwaCegarLoop]: 4531 mSDtfsCounter, 4978 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2022-07-22 19:33:57,845 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] [2022-07-22 19:33:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2022-07-22 19:34:00,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 56327. [2022-07-22 19:34:00,727 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) [2022-07-22 19:34:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56327 states to 56327 states and 94085 transitions. [2022-07-22 19:34:00,926 INFO L78 Accepts]: Start accepts. Automaton has 56327 states and 94085 transitions. Word has length 113 [2022-07-22 19:34:00,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:00,927 INFO L495 AbstractCegarLoop]: Abstraction has 56327 states and 94085 transitions. [2022-07-22 19:34:00,927 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) [2022-07-22 19:34:00,927 INFO L276 IsEmpty]: Start isEmpty. Operand 56327 states and 94085 transitions. [2022-07-22 19:34:00,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:34:00,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:00,963 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] [2022-07-22 19:34:00,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:34:00,964 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:00,964 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2022-07-22 19:34:00,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:00,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905752071] [2022-07-22 19:34:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:34:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:34:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:01,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:34:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:34:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:01,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:01,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905752071] [2022-07-22 19:34:01,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905752071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:01,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:01,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:01,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416173747] [2022-07-22 19:34:01,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:01,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:01,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:01,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:01,040 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) [2022-07-22 19:34:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:10,432 INFO L93 Difference]: Finished difference Result 207177 states and 347363 transitions. [2022-07-22 19:34:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:34:10,440 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 [2022-07-22 19:34:10,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:11,238 INFO L225 Difference]: With dead ends: 207177 [2022-07-22 19:34:11,239 INFO L226 Difference]: Without dead ends: 152987 [2022-07-22 19:34:11,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:34:11,364 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 4951 mSDsluCounter, 16953 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:11,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4971 Valid, 21449 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:34:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152987 states. [2022-07-22 19:34:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152987 to 110347. [2022-07-22 19:34:17,336 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) [2022-07-22 19:34:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110347 states to 110347 states and 190671 transitions. [2022-07-22 19:34:17,938 INFO L78 Accepts]: Start accepts. Automaton has 110347 states and 190671 transitions. Word has length 113 [2022-07-22 19:34:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:17,939 INFO L495 AbstractCegarLoop]: Abstraction has 110347 states and 190671 transitions. [2022-07-22 19:34:17,939 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) [2022-07-22 19:34:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 110347 states and 190671 transitions. [2022-07-22 19:34:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 19:34:18,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:18,001 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] [2022-07-22 19:34:18,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:34:18,001 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1374174658, now seen corresponding path program 1 times [2022-07-22 19:34:18,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974974658] [2022-07-22 19:34:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:18,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:18,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 19:34:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 19:34:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 19:34:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 19:34:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:18,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:18,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974974658] [2022-07-22 19:34:18,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974974658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:18,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:18,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:18,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850559078] [2022-07-22 19:34:18,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:18,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:18,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:18,072 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)