./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.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.09.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 fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:33:44,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:33:44,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:33:44,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:33:44,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:33:44,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:33:44,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:33:44,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:33:44,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:33:44,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:33:44,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:33:44,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:33:44,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:33:44,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:33:44,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:33:44,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:33:44,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:33:44,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:33:45,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:33:45,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:33:45,005 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:33:45,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:33:45,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:33:45,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:33:45,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:33:45,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:33:45,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:33:45,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:33:45,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:33:45,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:33:45,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:33:45,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:33:45,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:33:45,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:33:45,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:33:45,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:33:45,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:33:45,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:33:45,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:33:45,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:33:45,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:33:45,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:33:45,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:33:45,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:33:45,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:33:45,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:33:45,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:33:45,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:33:45,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:33:45,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:33:45,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:33:45,050 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:33:45,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:33:45,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:33:45,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:33:45,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:33:45,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:33:45,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:33:45,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:33:45,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:33:45,052 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:33:45,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:33:45,052 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:33:45,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:33:45,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:33:45,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:33:45,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:33:45,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:45,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:33:45,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:33:45,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:33:45,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:33:45,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:33:45,054 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:33:45,054 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:33:45,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:33:45,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd6b20844e2c749d2220243ee5decb4640d1db1a76545071f1578ab9a21c944c [2022-07-22 19:33:45,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:33:45,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:33:45,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:33:45,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:33:45,292 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:33:45,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-07-22 19:33:45,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8324bd6/0893c6b22a66433d85eb0bf0255ba058/FLAG61c1f748b [2022-07-22 19:33:46,178 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:33:46,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-07-22 19:33:46,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8324bd6/0893c6b22a66433d85eb0bf0255ba058/FLAG61c1f748b [2022-07-22 19:33:46,389 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a8324bd6/0893c6b22a66433d85eb0bf0255ba058 [2022-07-22 19:33:46,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:33:46,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:33:46,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:46,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:33:46,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:33:46,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:46" (1/1) ... [2022-07-22 19:33:46,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e99d9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:46, skipping insertion in model container [2022-07-22 19:33:46,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:33:46" (1/1) ... [2022-07-22 19:33:46,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:33:46,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:33:47,927 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.09.cil-1.c[381679,381692] [2022-07-22 19:33:47,943 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.09.cil-1.c[383339,383352] [2022-07-22 19:33:48,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:48,090 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:33:48,679 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.09.cil-1.c[381679,381692] [2022-07-22 19:33:48,682 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.09.cil-1.c[383339,383352] [2022-07-22 19:33:48,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:33:48,744 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:33:48,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48 WrapperNode [2022-07-22 19:33:48,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:33:48,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:48,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:33:48,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:33:48,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:48,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,008 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-07-22 19:33:49,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:33:49,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:33:49,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:33:49,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:33:49,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:33:49,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:33:49,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:33:49,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:33:49,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (1/1) ... [2022-07-22 19:33:49,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:33:49,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:33:49,444 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 19:33:49,464 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 19:33:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:33:49,503 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:33:49,503 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:33:49,504 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:33:49,504 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:33:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:33:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:33:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:33:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:33:49,505 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:33:49,505 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:33:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:33:49,506 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:33:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:33:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:33:49,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:33:49,646 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:33:49,647 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:33:54,231 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:33:54,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:33:54,265 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-22 19:33:54,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:33:54 BoogieIcfgContainer [2022-07-22 19:33:54,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:33:54,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:33:54,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:33:54,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:33:54,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:33:46" (1/3) ... [2022-07-22 19:33:54,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef0a5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:33:54, skipping insertion in model container [2022-07-22 19:33:54,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:33:48" (2/3) ... [2022-07-22 19:33:54,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef0a5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:33:54, skipping insertion in model container [2022-07-22 19:33:54,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:33:54" (3/3) ... [2022-07-22 19:33:54,273 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-1.c [2022-07-22 19:33:54,281 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:33:54,281 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:33:54,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:33:54,346 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@3f8d7ba, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fc4493a [2022-07-22 19:33:54,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:33:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 19:33:54,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:33:54,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:54,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:33:54,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2022-07-22 19:33:54,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:54,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303033627] [2022-07-22 19:33:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:54,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:54,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:54,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:33:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:33:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:54,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:33:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:54,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:33:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:54,756 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 19:33:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:54,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303033627] [2022-07-22 19:33:54,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303033627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:54,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:54,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:33:54,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473612531] [2022-07-22 19:33:54,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:54,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:33:54,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:33:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:33:54,789 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:55,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:55,787 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2022-07-22 19:33:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:33:55,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:33:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:55,805 INFO L225 Difference]: With dead ends: 5081 [2022-07-22 19:33:55,805 INFO L226 Difference]: Without dead ends: 2532 [2022-07-22 19:33:55,811 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 19:33:55,813 INFO L413 NwaCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16932 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:55,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 16932 Invalid, 618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 19:33:55,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-07-22 19:33:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2022-07-22 19:33:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 19:33:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2022-07-22 19:33:55,896 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2022-07-22 19:33:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:55,897 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2022-07-22 19:33:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2022-07-22 19:33:55,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:33:55,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:55,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:55,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:33:55,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2022-07-22 19:33:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982775493] [2022-07-22 19:33:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:55,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:55,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:33:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:56,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:33:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:56,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:33:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:33:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:56,030 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 19:33:56,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:56,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982775493] [2022-07-22 19:33:56,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982775493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:56,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:56,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:33:56,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146330234] [2022-07-22 19:33:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:56,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:33:56,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:33:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:33:56,033 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:33:57,942 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2022-07-22 19:33:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:33:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:33:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:33:57,953 INFO L225 Difference]: With dead ends: 3223 [2022-07-22 19:33:57,954 INFO L226 Difference]: Without dead ends: 2938 [2022-07-22 19:33:57,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:33:57,957 INFO L413 NwaCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12629 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17145 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:33:57,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5181 Valid, 17145 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 19:33:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-07-22 19:33:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2022-07-22 19:33:58,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-22 19:33:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2022-07-22 19:33:58,027 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2022-07-22 19:33:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:33:58,028 INFO L495 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2022-07-22 19:33:58,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:33:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2022-07-22 19:33:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:33:58,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:33:58,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:33:58,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:33:58,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:33:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:33:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2022-07-22 19:33:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:33:58,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236012176] [2022-07-22 19:33:58,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:33:58,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:33:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:33:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:33:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:58,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:33:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:58,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:33:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:58,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:33:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:33:58,145 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 19:33:58,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:33:58,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236012176] [2022-07-22 19:33:58,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236012176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:33:58,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:33:58,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:33:58,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517330294] [2022-07-22 19:33:58,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:33:58,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:33:58,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:33:58,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:33:58,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:33:58,147 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:00,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:00,344 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2022-07-22 19:34:00,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:00,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:00,355 INFO L225 Difference]: With dead ends: 3941 [2022-07-22 19:34:00,355 INFO L226 Difference]: Without dead ends: 3358 [2022-07-22 19:34:00,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:00,358 INFO L413 NwaCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 22069 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:00,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5203 Valid, 22069 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 19:34:00,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-07-22 19:34:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2022-07-22 19:34:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-22 19:34:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2022-07-22 19:34:00,417 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2022-07-22 19:34:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:00,417 INFO L495 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2022-07-22 19:34:00,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2022-07-22 19:34:00,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:00,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:00,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:00,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:34:00,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2022-07-22 19:34:00,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:00,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271893603] [2022-07-22 19:34:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:00,520 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 19:34:00,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:00,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271893603] [2022-07-22 19:34:00,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271893603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:00,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:00,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:00,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706372867] [2022-07-22 19:34:00,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:00,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:00,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:00,522 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:02,777 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2022-07-22 19:34:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:02,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:02,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:02,790 INFO L225 Difference]: With dead ends: 4998 [2022-07-22 19:34:02,791 INFO L226 Difference]: Without dead ends: 4138 [2022-07-22 19:34:02,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:02,794 INFO L413 NwaCegarLoop]: 4737 mSDtfsCounter, 5181 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 22057 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:02,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 22057 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 19:34:02,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-07-22 19:34:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2022-07-22 19:34:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-22 19:34:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2022-07-22 19:34:02,892 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2022-07-22 19:34:02,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:02,892 INFO L495 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2022-07-22 19:34:02,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2022-07-22 19:34:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:02,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:02,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:02,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:34:02,960 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2022-07-22 19:34:02,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:02,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374386095] [2022-07-22 19:34:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:02,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:02,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:03,053 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 19:34:03,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:03,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374386095] [2022-07-22 19:34:03,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374386095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:03,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:03,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832054917] [2022-07-22 19:34:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:03,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:03,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:03,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:03,056 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:05,223 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2022-07-22 19:34:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:05,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:05,243 INFO L225 Difference]: With dead ends: 7038 [2022-07-22 19:34:05,243 INFO L226 Difference]: Without dead ends: 5620 [2022-07-22 19:34:05,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:05,254 INFO L413 NwaCegarLoop]: 4732 mSDtfsCounter, 5180 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:05,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5196 Valid, 22052 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 19:34:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-07-22 19:34:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2022-07-22 19:34:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-22 19:34:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2022-07-22 19:34:05,421 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2022-07-22 19:34:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:05,422 INFO L495 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2022-07-22 19:34:05,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2022-07-22 19:34:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:05,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:05,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:34:05,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:05,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2022-07-22 19:34:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:05,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362748151] [2022-07-22 19:34:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:05,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:05,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:05,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362748151] [2022-07-22 19:34:05,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362748151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:05,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:05,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864417925] [2022-07-22 19:34:05,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:05,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:05,568 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:07,907 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2022-07-22 19:34:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:07,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:07,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:07,978 INFO L225 Difference]: With dead ends: 11117 [2022-07-22 19:34:07,978 INFO L226 Difference]: Without dead ends: 8582 [2022-07-22 19:34:07,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:07,987 INFO L413 NwaCegarLoop]: 4727 mSDtfsCounter, 5179 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:08,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 22047 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 19:34:08,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2022-07-22 19:34:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2022-07-22 19:34:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-22 19:34:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2022-07-22 19:34:08,269 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2022-07-22 19:34:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:08,269 INFO L495 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2022-07-22 19:34:08,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:08,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2022-07-22 19:34:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:08,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:08,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:08,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:34:08,274 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:08,275 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2022-07-22 19:34:08,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:08,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455086434] [2022-07-22 19:34:08,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:08,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:08,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:08,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:34:08,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:08,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455086434] [2022-07-22 19:34:08,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455086434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:08,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:08,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:08,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807725315] [2022-07-22 19:34:08,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:08,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:08,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:08,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:08,398 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:10,962 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2022-07-22 19:34:10,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:10,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:11,027 INFO L225 Difference]: With dead ends: 19276 [2022-07-22 19:34:11,027 INFO L226 Difference]: Without dead ends: 14500 [2022-07-22 19:34:11,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:11,060 INFO L413 NwaCegarLoop]: 4535 mSDtfsCounter, 5256 mSDsluCounter, 16820 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 21355 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:11,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5272 Valid, 21355 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:34:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2022-07-22 19:34:11,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2022-07-22 19:34:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 19:34:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2022-07-22 19:34:11,543 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2022-07-22 19:34:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:11,543 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2022-07-22 19:34:11,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:11,544 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2022-07-22 19:34:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:11,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:11,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:11,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:34:11,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:11,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:11,550 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2022-07-22 19:34:11,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:11,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643762553] [2022-07-22 19:34:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:11,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:11,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:11,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:11,669 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 19:34:11,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:11,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643762553] [2022-07-22 19:34:11,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643762553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:11,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:11,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:11,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85017409] [2022-07-22 19:34:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:11,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:11,671 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:13,372 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2022-07-22 19:34:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:34:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:13,415 INFO L225 Difference]: With dead ends: 23942 [2022-07-22 19:34:13,415 INFO L226 Difference]: Without dead ends: 14669 [2022-07-22 19:34:13,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:34:13,470 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4834 mSDsluCounter, 16571 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 21017 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:13,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4851 Valid, 21017 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 19:34:13,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-22 19:34:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2022-07-22 19:34:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 19:34:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2022-07-22 19:34:14,001 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2022-07-22 19:34:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:14,002 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2022-07-22 19:34:14,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2022-07-22 19:34:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:14,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:14,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:14,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:34:14,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:14,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2022-07-22 19:34:14,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:14,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736835745] [2022-07-22 19:34:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:14,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:14,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:14,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:14,126 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 19:34:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:14,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736835745] [2022-07-22 19:34:14,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736835745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:14,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:14,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:14,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054624058] [2022-07-22 19:34:14,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:14,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:14,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:14,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:14,128 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:17,627 INFO L93 Difference]: Finished difference Result 35561 states and 57055 transitions. [2022-07-22 19:34:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:17,712 INFO L225 Difference]: With dead ends: 35561 [2022-07-22 19:34:17,712 INFO L226 Difference]: Without dead ends: 26288 [2022-07-22 19:34:17,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:17,740 INFO L413 NwaCegarLoop]: 4711 mSDtfsCounter, 5170 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:17,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 22031 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:34:17,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2022-07-22 19:34:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 20469. [2022-07-22 19:34:18,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20469 states, 18838 states have (on average 1.5828113387833103) internal successors, (29817), 18904 states have internal predecessors, (29817), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-22 19:34:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20469 states to 20469 states and 32960 transitions. [2022-07-22 19:34:19,008 INFO L78 Accepts]: Start accepts. Automaton has 20469 states and 32960 transitions. Word has length 145 [2022-07-22 19:34:19,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:19,008 INFO L495 AbstractCegarLoop]: Abstraction has 20469 states and 32960 transitions. [2022-07-22 19:34:19,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20469 states and 32960 transitions. [2022-07-22 19:34:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:19,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:19,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:19,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:34:19,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:19,019 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2022-07-22 19:34:19,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:19,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334875998] [2022-07-22 19:34:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:19,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:19,123 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 19:34:19,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:19,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334875998] [2022-07-22 19:34:19,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334875998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:19,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:19,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352086659] [2022-07-22 19:34:19,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:19,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:19,125 INFO L87 Difference]: Start difference. First operand 20469 states and 32960 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:23,900 INFO L93 Difference]: Finished difference Result 68201 states and 109703 transitions. [2022-07-22 19:34:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:34:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:24,085 INFO L225 Difference]: With dead ends: 68201 [2022-07-22 19:34:24,085 INFO L226 Difference]: Without dead ends: 49870 [2022-07-22 19:34:24,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:34:24,135 INFO L413 NwaCegarLoop]: 4704 mSDtfsCounter, 5172 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5188 SdHoareTripleChecker+Valid, 22024 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:24,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5188 Valid, 22024 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 19:34:24,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49870 states. [2022-07-22 19:34:27,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49870 to 38646. [2022-07-22 19:34:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38646 states, 35415 states have (on average 1.564845404489623) internal successors, (55419), 35545 states have internal predecessors, (55419), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-22 19:34:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38646 states to 38646 states and 62388 transitions. [2022-07-22 19:34:27,316 INFO L78 Accepts]: Start accepts. Automaton has 38646 states and 62388 transitions. Word has length 145 [2022-07-22 19:34:27,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:27,317 INFO L495 AbstractCegarLoop]: Abstraction has 38646 states and 62388 transitions. [2022-07-22 19:34:27,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 38646 states and 62388 transitions. [2022-07-22 19:34:27,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:27,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:27,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:27,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:34:27,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2022-07-22 19:34:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:27,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043168400] [2022-07-22 19:34:27,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:27,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:27,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:27,443 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 19:34:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:27,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043168400] [2022-07-22 19:34:27,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043168400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:27,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:27,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996873418] [2022-07-22 19:34:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:27,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:27,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:27,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:27,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:27,446 INFO L87 Difference]: Start difference. First operand 38646 states and 62388 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:34:38,148 INFO L93 Difference]: Finished difference Result 149094 states and 240779 transitions. [2022-07-22 19:34:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:34:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:34:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:34:38,603 INFO L225 Difference]: With dead ends: 149094 [2022-07-22 19:34:38,603 INFO L226 Difference]: Without dead ends: 112586 [2022-07-22 19:34:38,722 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 19:34:38,724 INFO L413 NwaCegarLoop]: 4832 mSDtfsCounter, 5249 mSDsluCounter, 17309 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5264 SdHoareTripleChecker+Valid, 22141 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 19:34:38,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5264 Valid, 22141 Invalid, 2842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2761 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 19:34:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112586 states. [2022-07-22 19:34:43,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112586 to 74232. [2022-07-22 19:34:43,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74232 states, 67929 states have (on average 1.5573760838522575) internal successors, (105791), 68187 states have internal predecessors, (105791), 4503 states have call successors, (4503), 1542 states have call predecessors, (4503), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-22 19:34:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74232 states to 74232 states and 121614 transitions. [2022-07-22 19:34:44,160 INFO L78 Accepts]: Start accepts. Automaton has 74232 states and 121614 transitions. Word has length 145 [2022-07-22 19:34:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:34:44,161 INFO L495 AbstractCegarLoop]: Abstraction has 74232 states and 121614 transitions. [2022-07-22 19:34:44,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:34:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 74232 states and 121614 transitions. [2022-07-22 19:34:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 19:34:44,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:34:44,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:34:44,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:34:44,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:34:44,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:34:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2007160221, now seen corresponding path program 1 times [2022-07-22 19:34:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:34:44,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233250813] [2022-07-22 19:34:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:34:44,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:34:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:34:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 19:34:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 19:34:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:44,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 19:34:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 19:34:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:34:44,355 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 19:34:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:34:44,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233250813] [2022-07-22 19:34:44,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233250813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:34:44,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:34:44,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:34:44,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632837346] [2022-07-22 19:34:44,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:34:44,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:34:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:34:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:34:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:34:44,357 INFO L87 Difference]: Start difference. First operand 74232 states and 121614 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:35:05,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:35:05,134 INFO L93 Difference]: Finished difference Result 288998 states and 474915 transitions. [2022-07-22 19:35:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:35:05,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-22 19:35:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted.