./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:31:48,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:31:48,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:31:48,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:31:48,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:31:48,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:31:48,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:31:48,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:31:48,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:31:48,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:31:48,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:31:48,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:31:48,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:31:48,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:31:48,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:31:48,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:31:48,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:31:48,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:31:48,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:31:48,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:31:48,977 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:31:48,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:31:48,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:31:48,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:31:48,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:31:48,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:31:48,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:31:48,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:31:48,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:31:48,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:31:48,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:31:48,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:31:48,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:31:48,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:31:48,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:31:48,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:31:48,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:31:48,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:31:48,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:31:48,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:31:48,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:31:48,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:31:48,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:31:49,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:31:49,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:31:49,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:31:49,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:31:49,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:31:49,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:31:49,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:31:49,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:31:49,017 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:31:49,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:31:49,018 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:31:49,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:31:49,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:31:49,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:31:49,018 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:31:49,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:31:49,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:31:49,019 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:31:49,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:31:49,020 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:31:49,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:31:49,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:31:49,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:31:49,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:31:49,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:31:49,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:31:49,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:31:49,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:31:49,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:31:49,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:31:49,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:31:49,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:31:49,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:31:49,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 [2022-07-12 09:31:49,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:31:49,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:31:49,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:31:49,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:31:49,228 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:31:49,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2022-07-12 09:31:49,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4038968ed/d175844cc25a43fc91c9d38f71696ea3/FLAG22be55ac9 [2022-07-12 09:31:49,632 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:31:49,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2022-07-12 09:31:49,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4038968ed/d175844cc25a43fc91c9d38f71696ea3/FLAG22be55ac9 [2022-07-12 09:31:50,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4038968ed/d175844cc25a43fc91c9d38f71696ea3 [2022-07-12 09:31:50,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:31:50,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:31:50,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:31:50,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:31:50,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:31:50,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb47021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50, skipping insertion in model container [2022-07-12 09:31:50,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:31:50,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:31:50,182 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2022-07-12 09:31:50,210 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2022-07-12 09:31:50,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:31:50,255 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:31:50,265 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2022-07-12 09:31:50,292 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/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2022-07-12 09:31:50,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:31:50,342 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:31:50,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50 WrapperNode [2022-07-12 09:31:50,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:31:50,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:31:50,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:31:50,344 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:31:50,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,395 INFO L137 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 697 [2022-07-12 09:31:50,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:31:50,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:31:50,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:31:50,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:31:50,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:31:50,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:31:50,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:31:50,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:31:50,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (1/1) ... [2022-07-12 09:31:50,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:31:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:50,456 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) [2022-07-12 09:31:50,462 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 [2022-07-12 09:31:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:31:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:31:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:31:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:31:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:31:50,500 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:31:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:31:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:31:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:31:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:31:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:31:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:31:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:31:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:31:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:31:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:31:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:31:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:31:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:31:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:31:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:31:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:31:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:31:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:31:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:31:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:31:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:31:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:31:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:31:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:31:50,572 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:31:50,573 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:31:51,080 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:31:51,093 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:31:51,093 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-12 09:31:51,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:31:51 BoogieIcfgContainer [2022-07-12 09:31:51,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:31:51,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:31:51,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:31:51,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:31:51,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:31:50" (1/3) ... [2022-07-12 09:31:51,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252e2608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:31:51, skipping insertion in model container [2022-07-12 09:31:51,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:31:50" (2/3) ... [2022-07-12 09:31:51,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252e2608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:31:51, skipping insertion in model container [2022-07-12 09:31:51,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:31:51" (3/3) ... [2022-07-12 09:31:51,104 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2022-07-12 09:31:51,114 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:31:51,115 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:31:51,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:31:51,176 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@319dd66d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@431e73a9 [2022-07-12 09:31:51,176 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:31:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 287 states have (on average 1.613240418118467) internal successors, (463), 295 states have internal predecessors, (463), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-12 09:31:51,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:51,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:51,188 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] [2022-07-12 09:31:51,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1403683270, now seen corresponding path program 1 times [2022-07-12 09:31:51,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:51,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325156114] [2022-07-12 09:31:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:51,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:51,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:51,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325156114] [2022-07-12 09:31:51,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325156114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:51,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:51,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:51,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505441182] [2022-07-12 09:31:51,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:51,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:51,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:51,469 INFO L87 Difference]: Start difference. First operand has 341 states, 287 states have (on average 1.613240418118467) internal successors, (463), 295 states have internal predecessors, (463), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:52,249 INFO L93 Difference]: Finished difference Result 794 states and 1240 transitions. [2022-07-12 09:31:52,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:31:52,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:52,260 INFO L225 Difference]: With dead ends: 794 [2022-07-12 09:31:52,261 INFO L226 Difference]: Without dead ends: 465 [2022-07-12 09:31:52,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:52,266 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 833 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:52,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1506 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:52,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-12 09:31:52,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 426. [2022-07-12 09:31:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 355 states have (on average 1.4929577464788732) internal successors, (530), 362 states have internal predecessors, (530), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2022-07-12 09:31:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 625 transitions. [2022-07-12 09:31:52,317 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 625 transitions. Word has length 65 [2022-07-12 09:31:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:52,318 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 625 transitions. [2022-07-12 09:31:52,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 625 transitions. [2022-07-12 09:31:52,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:52,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:52,321 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] [2022-07-12 09:31:52,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:31:52,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:52,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:52,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1666920611, now seen corresponding path program 1 times [2022-07-12 09:31:52,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:52,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795523845] [2022-07-12 09:31:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:52,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:52,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795523845] [2022-07-12 09:31:52,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795523845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:52,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:52,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913749493] [2022-07-12 09:31:52,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:52,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:52,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:52,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:52,410 INFO L87 Difference]: Start difference. First operand 426 states and 625 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:53,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:53,164 INFO L93 Difference]: Finished difference Result 773 states and 1102 transitions. [2022-07-12 09:31:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:31:53,165 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:53,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:53,168 INFO L225 Difference]: With dead ends: 773 [2022-07-12 09:31:53,168 INFO L226 Difference]: Without dead ends: 596 [2022-07-12 09:31:53,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:31:53,170 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 986 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:53,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1932 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-07-12 09:31:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 522. [2022-07-12 09:31:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 431 states have (on average 1.4709976798143851) internal successors, (634), 440 states have internal predecessors, (634), 58 states have call successors, (58), 29 states have call predecessors, (58), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2022-07-12 09:31:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 759 transitions. [2022-07-12 09:31:53,206 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 759 transitions. Word has length 65 [2022-07-12 09:31:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:53,206 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 759 transitions. [2022-07-12 09:31:53,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 759 transitions. [2022-07-12 09:31:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:53,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:53,209 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] [2022-07-12 09:31:53,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:31:53,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash -361665499, now seen corresponding path program 1 times [2022-07-12 09:31:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:53,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797402555] [2022-07-12 09:31:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:53,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:53,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797402555] [2022-07-12 09:31:53,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797402555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:53,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:53,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:31:53,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317023462] [2022-07-12 09:31:53,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:53,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:31:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:31:53,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:53,327 INFO L87 Difference]: Start difference. First operand 522 states and 759 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:31:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:54,695 INFO L93 Difference]: Finished difference Result 1854 states and 2605 transitions. [2022-07-12 09:31:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:31:54,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-12 09:31:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:54,704 INFO L225 Difference]: With dead ends: 1854 [2022-07-12 09:31:54,704 INFO L226 Difference]: Without dead ends: 1569 [2022-07-12 09:31:54,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:31:54,706 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 2875 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:54,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 1932 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:31:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-07-12 09:31:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1408. [2022-07-12 09:31:54,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1134 states have (on average 1.3835978835978835) internal successors, (1569), 1158 states have internal predecessors, (1569), 146 states have call successors, (146), 112 states have call predecessors, (146), 126 states have return successors, (178), 140 states have call predecessors, (178), 142 states have call successors, (178) [2022-07-12 09:31:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 1893 transitions. [2022-07-12 09:31:54,760 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 1893 transitions. Word has length 65 [2022-07-12 09:31:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:54,760 INFO L495 AbstractCegarLoop]: Abstraction has 1408 states and 1893 transitions. [2022-07-12 09:31:54,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:31:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 1893 transitions. [2022-07-12 09:31:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:54,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:54,762 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] [2022-07-12 09:31:54,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:31:54,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:54,762 INFO L85 PathProgramCache]: Analyzing trace with hash 689783590, now seen corresponding path program 1 times [2022-07-12 09:31:54,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:54,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018081748] [2022-07-12 09:31:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:54,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:54,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:54,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:54,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018081748] [2022-07-12 09:31:54,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018081748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:54,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:54,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:31:54,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635996187] [2022-07-12 09:31:54,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:54,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:31:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:31:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:31:54,836 INFO L87 Difference]: Start difference. First operand 1408 states and 1893 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:55,534 INFO L93 Difference]: Finished difference Result 2737 states and 3643 transitions. [2022-07-12 09:31:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:31:55,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:31:55,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:55,540 INFO L225 Difference]: With dead ends: 2737 [2022-07-12 09:31:55,541 INFO L226 Difference]: Without dead ends: 1572 [2022-07-12 09:31:55,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:31:55,544 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 602 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:55,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1947 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:31:55,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2022-07-12 09:31:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1438. [2022-07-12 09:31:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1158 states have (on average 1.3687392055267702) internal successors, (1585), 1182 states have internal predecessors, (1585), 146 states have call successors, (146), 112 states have call predecessors, (146), 132 states have return successors, (184), 146 states have call predecessors, (184), 142 states have call successors, (184) [2022-07-12 09:31:55,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1915 transitions. [2022-07-12 09:31:55,605 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1915 transitions. Word has length 65 [2022-07-12 09:31:55,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:55,605 INFO L495 AbstractCegarLoop]: Abstraction has 1438 states and 1915 transitions. [2022-07-12 09:31:55,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1915 transitions. [2022-07-12 09:31:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:55,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:55,607 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] [2022-07-12 09:31:55,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:31:55,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2075986984, now seen corresponding path program 1 times [2022-07-12 09:31:55,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:55,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310070471] [2022-07-12 09:31:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:55,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:55,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:55,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310070471] [2022-07-12 09:31:55,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310070471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:55,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:55,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:31:55,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614186349] [2022-07-12 09:31:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:55,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:31:55,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:31:55,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:31:55,728 INFO L87 Difference]: Start difference. First operand 1438 states and 1915 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:56,430 INFO L93 Difference]: Finished difference Result 2787 states and 3617 transitions. [2022-07-12 09:31:56,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 09:31:56,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:56,437 INFO L225 Difference]: With dead ends: 2787 [2022-07-12 09:31:56,437 INFO L226 Difference]: Without dead ends: 1815 [2022-07-12 09:31:56,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-12 09:31:56,440 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1200 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:56,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1459 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:31:56,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-07-12 09:31:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1380. [2022-07-12 09:31:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1116 states have (on average 1.3664874551971327) internal successors, (1525), 1135 states have internal predecessors, (1525), 140 states have call successors, (140), 107 states have call predecessors, (140), 122 states have return successors, (169), 139 states have call predecessors, (169), 136 states have call successors, (169) [2022-07-12 09:31:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 1834 transitions. [2022-07-12 09:31:56,492 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 1834 transitions. Word has length 65 [2022-07-12 09:31:56,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:56,492 INFO L495 AbstractCegarLoop]: Abstraction has 1380 states and 1834 transitions. [2022-07-12 09:31:56,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:56,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 1834 transitions. [2022-07-12 09:31:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:31:56,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:56,493 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] [2022-07-12 09:31:56,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:31:56,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:56,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1941973478, now seen corresponding path program 1 times [2022-07-12 09:31:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:56,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837069813] [2022-07-12 09:31:56,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:56,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:56,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:56,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837069813] [2022-07-12 09:31:56,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837069813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:56,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:56,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427066003] [2022-07-12 09:31:56,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:56,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:56,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:56,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:56,553 INFO L87 Difference]: Start difference. First operand 1380 states and 1834 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:56,895 INFO L93 Difference]: Finished difference Result 3734 states and 4852 transitions. [2022-07-12 09:31:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:31:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:31:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:56,905 INFO L225 Difference]: With dead ends: 3734 [2022-07-12 09:31:56,905 INFO L226 Difference]: Without dead ends: 2598 [2022-07-12 09:31:56,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:31:56,910 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1170 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:56,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1188 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2022-07-12 09:31:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2478. [2022-07-12 09:31:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 1955 states have (on average 1.3048593350383633) internal successors, (2551), 1998 states have internal predecessors, (2551), 270 states have call successors, (270), 206 states have call predecessors, (270), 251 states have return successors, (381), 276 states have call predecessors, (381), 266 states have call successors, (381) [2022-07-12 09:31:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3202 transitions. [2022-07-12 09:31:56,991 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3202 transitions. Word has length 65 [2022-07-12 09:31:56,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:56,991 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3202 transitions. [2022-07-12 09:31:56,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:31:56,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3202 transitions. [2022-07-12 09:31:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:31:56,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:56,993 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] [2022-07-12 09:31:56,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:31:56,993 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:56,993 INFO L85 PathProgramCache]: Analyzing trace with hash 754580266, now seen corresponding path program 1 times [2022-07-12 09:31:56,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:56,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853546728] [2022-07-12 09:31:56,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:57,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:57,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853546728] [2022-07-12 09:31:57,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853546728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:57,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:57,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14872636] [2022-07-12 09:31:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:57,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:57,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:57,063 INFO L87 Difference]: Start difference. First operand 2478 states and 3202 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:57,564 INFO L93 Difference]: Finished difference Result 5872 states and 7510 transitions. [2022-07-12 09:31:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:57,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:31:57,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:57,578 INFO L225 Difference]: With dead ends: 5872 [2022-07-12 09:31:57,578 INFO L226 Difference]: Without dead ends: 3643 [2022-07-12 09:31:57,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:57,584 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 816 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:57,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1158 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:31:57,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3643 states. [2022-07-12 09:31:57,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3643 to 3312. [2022-07-12 09:31:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3312 states, 2600 states have (on average 1.2896153846153846) internal successors, (3353), 2650 states have internal predecessors, (3353), 366 states have call successors, (366), 286 states have call predecessors, (366), 344 states have return successors, (500), 378 states have call predecessors, (500), 362 states have call successors, (500) [2022-07-12 09:31:57,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4219 transitions. [2022-07-12 09:31:57,715 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4219 transitions. Word has length 66 [2022-07-12 09:31:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:57,716 INFO L495 AbstractCegarLoop]: Abstraction has 3312 states and 4219 transitions. [2022-07-12 09:31:57,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4219 transitions. [2022-07-12 09:31:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 09:31:57,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:57,718 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] [2022-07-12 09:31:57,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:31:57,718 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:57,718 INFO L85 PathProgramCache]: Analyzing trace with hash 575552873, now seen corresponding path program 1 times [2022-07-12 09:31:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545800836] [2022-07-12 09:31:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:57,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:57,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545800836] [2022-07-12 09:31:57,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545800836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:57,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:57,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:31:57,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849748986] [2022-07-12 09:31:57,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:57,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:31:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:57,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:31:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:31:57,779 INFO L87 Difference]: Start difference. First operand 3312 states and 4219 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:58,147 INFO L93 Difference]: Finished difference Result 7298 states and 9218 transitions. [2022-07-12 09:31:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:31:58,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-12 09:31:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:58,165 INFO L225 Difference]: With dead ends: 7298 [2022-07-12 09:31:58,166 INFO L226 Difference]: Without dead ends: 4233 [2022-07-12 09:31:58,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:31:58,171 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 904 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:58,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1244 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:31:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2022-07-12 09:31:58,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 3887. [2022-07-12 09:31:58,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3887 states, 3055 states have (on average 1.2821603927986907) internal successors, (3917), 3109 states have internal predecessors, (3917), 425 states have call successors, (425), 336 states have call predecessors, (425), 405 states have return successors, (582), 444 states have call predecessors, (582), 421 states have call successors, (582) [2022-07-12 09:31:58,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3887 states to 3887 states and 4924 transitions. [2022-07-12 09:31:58,331 INFO L78 Accepts]: Start accepts. Automaton has 3887 states and 4924 transitions. Word has length 72 [2022-07-12 09:31:58,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:58,332 INFO L495 AbstractCegarLoop]: Abstraction has 3887 states and 4924 transitions. [2022-07-12 09:31:58,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:31:58,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3887 states and 4924 transitions. [2022-07-12 09:31:58,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:31:58,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:58,333 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:58,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:31:58,333 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:58,334 INFO L85 PathProgramCache]: Analyzing trace with hash 145752580, now seen corresponding path program 1 times [2022-07-12 09:31:58,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:58,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42242200] [2022-07-12 09:31:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:58,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:58,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42242200] [2022-07-12 09:31:58,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42242200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:31:58,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:31:58,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:31:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807494321] [2022-07-12 09:31:58,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:31:58,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:31:58,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:31:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:31:58,398 INFO L87 Difference]: Start difference. First operand 3887 states and 4924 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:31:58,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:58,832 INFO L93 Difference]: Finished difference Result 5069 states and 6380 transitions. [2022-07-12 09:31:58,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:31:58,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-12 09:31:58,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:58,850 INFO L225 Difference]: With dead ends: 5069 [2022-07-12 09:31:58,851 INFO L226 Difference]: Without dead ends: 5066 [2022-07-12 09:31:58,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:31:58,854 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1379 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:58,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 1215 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:31:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2022-07-12 09:31:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 4354. [2022-07-12 09:31:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 3412 states have (on average 1.272860492379836) internal successors, (4343), 3470 states have internal predecessors, (4343), 478 states have call successors, (478), 380 states have call predecessors, (478), 462 states have return successors, (664), 506 states have call predecessors, (664), 475 states have call successors, (664) [2022-07-12 09:31:59,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 5485 transitions. [2022-07-12 09:31:59,041 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 5485 transitions. Word has length 73 [2022-07-12 09:31:59,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:31:59,042 INFO L495 AbstractCegarLoop]: Abstraction has 4354 states and 5485 transitions. [2022-07-12 09:31:59,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:31:59,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 5485 transitions. [2022-07-12 09:31:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:31:59,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:31:59,043 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:31:59,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:31:59,044 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:31:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:31:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash 222341395, now seen corresponding path program 1 times [2022-07-12 09:31:59,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:31:59,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323761774] [2022-07-12 09:31:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:31:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:31:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:31:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:31:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:31:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:31:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:31:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:31:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:59,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:31:59,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323761774] [2022-07-12 09:31:59,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323761774] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:31:59,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242146989] [2022-07-12 09:31:59,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:31:59,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:31:59,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:31:59,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:31:59,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:31:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:31:59,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:31:59,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:31:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:59,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:31:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:31:59,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242146989] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:31:59,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:31:59,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:31:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364699351] [2022-07-12 09:31:59,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:31:59,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:31:59,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:31:59,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:31:59,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:31:59,601 INFO L87 Difference]: Start difference. First operand 4354 states and 5485 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:32:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:00,863 INFO L93 Difference]: Finished difference Result 8895 states and 11093 transitions. [2022-07-12 09:32:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 09:32:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-12 09:32:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:00,895 INFO L225 Difference]: With dead ends: 8895 [2022-07-12 09:32:00,895 INFO L226 Difference]: Without dead ends: 8892 [2022-07-12 09:32:00,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-12 09:32:00,901 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1748 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:00,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 2348 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:32:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2022-07-12 09:32:01,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 7823. [2022-07-12 09:32:01,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 6114 states have (on average 1.2600588812561335) internal successors, (7704), 6216 states have internal predecessors, (7704), 857 states have call successors, (857), 694 states have call predecessors, (857), 850 states have return successors, (1201), 915 states have call predecessors, (1201), 854 states have call successors, (1201) [2022-07-12 09:32:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 9762 transitions. [2022-07-12 09:32:01,255 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 9762 transitions. Word has length 74 [2022-07-12 09:32:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:01,255 INFO L495 AbstractCegarLoop]: Abstraction has 7823 states and 9762 transitions. [2022-07-12 09:32:01,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:32:01,255 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 9762 transitions. [2022-07-12 09:32:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:32:01,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:01,257 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:01,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:32:01,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 09:32:01,471 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash -279508924, now seen corresponding path program 2 times [2022-07-12 09:32:01,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:01,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812102085] [2022-07-12 09:32:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:01,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:01,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:01,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812102085] [2022-07-12 09:32:01,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812102085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:01,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:01,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:32:01,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560725085] [2022-07-12 09:32:01,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:01,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:32:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:01,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:32:01,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:32:01,520 INFO L87 Difference]: Start difference. First operand 7823 states and 9762 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:32:01,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:01,935 INFO L93 Difference]: Finished difference Result 10533 states and 13174 transitions. [2022-07-12 09:32:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:32:01,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-12 09:32:01,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:01,948 INFO L225 Difference]: With dead ends: 10533 [2022-07-12 09:32:01,949 INFO L226 Difference]: Without dead ends: 4316 [2022-07-12 09:32:01,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:32:01,960 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 839 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:01,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1302 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:32:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4316 states. [2022-07-12 09:32:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4316 to 3199. [2022-07-12 09:32:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2522 states have (on average 1.26050753370341) internal successors, (3179), 2558 states have internal predecessors, (3179), 350 states have call successors, (350), 276 states have call predecessors, (350), 325 states have return successors, (460), 367 states have call predecessors, (460), 347 states have call successors, (460) [2022-07-12 09:32:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 3989 transitions. [2022-07-12 09:32:02,114 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 3989 transitions. Word has length 77 [2022-07-12 09:32:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:02,114 INFO L495 AbstractCegarLoop]: Abstraction has 3199 states and 3989 transitions. [2022-07-12 09:32:02,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:32:02,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 3989 transitions. [2022-07-12 09:32:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:32:02,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:02,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:02,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:32:02,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:02,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:02,116 INFO L85 PathProgramCache]: Analyzing trace with hash 976361349, now seen corresponding path program 1 times [2022-07-12 09:32:02,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:02,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247466565] [2022-07-12 09:32:02,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:02,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:32:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:32:02,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:02,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247466565] [2022-07-12 09:32:02,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247466565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:02,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:02,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:32:02,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066107870] [2022-07-12 09:32:02,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:02,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:32:02,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:32:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:32:02,166 INFO L87 Difference]: Start difference. First operand 3199 states and 3989 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:03,097 INFO L93 Difference]: Finished difference Result 9255 states and 11453 transitions. [2022-07-12 09:32:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 09:32:03,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-12 09:32:03,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:03,112 INFO L225 Difference]: With dead ends: 9255 [2022-07-12 09:32:03,112 INFO L226 Difference]: Without dead ends: 5440 [2022-07-12 09:32:03,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2022-07-12 09:32:03,119 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1136 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:03,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1770 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:32:03,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2022-07-12 09:32:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 5093. [2022-07-12 09:32:03,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5093 states, 3961 states have (on average 1.2297399646553901) internal successors, (4871), 4028 states have internal predecessors, (4871), 568 states have call successors, (568), 448 states have call predecessors, (568), 562 states have return successors, (854), 619 states have call predecessors, (854), 565 states have call successors, (854) [2022-07-12 09:32:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5093 states to 5093 states and 6293 transitions. [2022-07-12 09:32:03,310 INFO L78 Accepts]: Start accepts. Automaton has 5093 states and 6293 transitions. Word has length 84 [2022-07-12 09:32:03,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:03,310 INFO L495 AbstractCegarLoop]: Abstraction has 5093 states and 6293 transitions. [2022-07-12 09:32:03,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5093 states and 6293 transitions. [2022-07-12 09:32:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:32:03,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:03,314 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:32:03,314 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 788007266, now seen corresponding path program 1 times [2022-07-12 09:32:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:03,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751512628] [2022-07-12 09:32:03,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:32:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:32:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:32:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:32:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:32:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:32:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:32:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:32:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:03,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751512628] [2022-07-12 09:32:03,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751512628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:03,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:03,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:32:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767988257] [2022-07-12 09:32:03,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:32:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:32:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:03,375 INFO L87 Difference]: Start difference. First operand 5093 states and 6293 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:04,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:04,364 INFO L93 Difference]: Finished difference Result 9449 states and 11556 transitions. [2022-07-12 09:32:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:32:04,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-12 09:32:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:04,377 INFO L225 Difference]: With dead ends: 9449 [2022-07-12 09:32:04,378 INFO L226 Difference]: Without dead ends: 5172 [2022-07-12 09:32:04,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:32:04,387 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1511 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:04,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1790 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:32:04,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5172 states. [2022-07-12 09:32:04,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5172 to 4801. [2022-07-12 09:32:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 3717 states have (on average 1.2085014796879203) internal successors, (4492), 3786 states have internal predecessors, (4492), 538 states have call successors, (538), 430 states have call predecessors, (538), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-07-12 09:32:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 5775 transitions. [2022-07-12 09:32:04,638 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 5775 transitions. Word has length 93 [2022-07-12 09:32:04,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:04,638 INFO L495 AbstractCegarLoop]: Abstraction has 4801 states and 5775 transitions. [2022-07-12 09:32:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:32:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 5775 transitions. [2022-07-12 09:32:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:04,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:04,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:32:04,641 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:04,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1464072493, now seen corresponding path program 1 times [2022-07-12 09:32:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:04,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730617831] [2022-07-12 09:32:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:04,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:04,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:04,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:04,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:04,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730617831] [2022-07-12 09:32:04,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730617831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:04,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:04,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:32:04,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342214435] [2022-07-12 09:32:04,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:04,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:32:04,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:04,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:32:04,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:32:04,706 INFO L87 Difference]: Start difference. First operand 4801 states and 5775 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:05,522 INFO L93 Difference]: Finished difference Result 5099 states and 6247 transitions. [2022-07-12 09:32:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:32:05,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:05,531 INFO L225 Difference]: With dead ends: 5099 [2022-07-12 09:32:05,532 INFO L226 Difference]: Without dead ends: 4877 [2022-07-12 09:32:05,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:32:05,533 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 692 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:05,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 938 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 09:32:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4877 states. [2022-07-12 09:32:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4877 to 4801. [2022-07-12 09:32:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4801 states, 3717 states have (on average 1.208232445520581) internal successors, (4491), 3786 states have internal predecessors, (4491), 538 states have call successors, (538), 430 states have call predecessors, (538), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-07-12 09:32:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4801 states to 4801 states and 5774 transitions. [2022-07-12 09:32:05,747 INFO L78 Accepts]: Start accepts. Automaton has 4801 states and 5774 transitions. Word has length 113 [2022-07-12 09:32:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:05,747 INFO L495 AbstractCegarLoop]: Abstraction has 4801 states and 5774 transitions. [2022-07-12 09:32:05,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4801 states and 5774 transitions. [2022-07-12 09:32:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:05,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:05,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:05,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:32:05,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash 433031595, now seen corresponding path program 1 times [2022-07-12 09:32:05,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345930904] [2022-07-12 09:32:05,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:05,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:05,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:05,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345930904] [2022-07-12 09:32:05,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345930904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:05,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:05,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262653926] [2022-07-12 09:32:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:05,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:05,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:05,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:05,833 INFO L87 Difference]: Start difference. First operand 4801 states and 5774 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:07,466 INFO L93 Difference]: Finished difference Result 5412 states and 6754 transitions. [2022-07-12 09:32:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:07,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:07,479 INFO L225 Difference]: With dead ends: 5412 [2022-07-12 09:32:07,479 INFO L226 Difference]: Without dead ends: 5192 [2022-07-12 09:32:07,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:07,483 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1048 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:07,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2126 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:32:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5192 states. [2022-07-12 09:32:07,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5192 to 5029. [2022-07-12 09:32:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5029 states, 3920 states have (on average 1.2275510204081632) internal successors, (4812), 3991 states have internal predecessors, (4812), 555 states have call successors, (555), 436 states have call predecessors, (555), 552 states have return successors, (769), 605 states have call predecessors, (769), 552 states have call successors, (769) [2022-07-12 09:32:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 6136 transitions. [2022-07-12 09:32:07,745 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 6136 transitions. Word has length 113 [2022-07-12 09:32:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:07,745 INFO L495 AbstractCegarLoop]: Abstraction has 5029 states and 6136 transitions. [2022-07-12 09:32:07,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 6136 transitions. [2022-07-12 09:32:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:07,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:07,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:07,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:32:07,747 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1784416813, now seen corresponding path program 1 times [2022-07-12 09:32:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:07,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677183616] [2022-07-12 09:32:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:07,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677183616] [2022-07-12 09:32:07,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677183616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:07,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:07,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972604938] [2022-07-12 09:32:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:07,816 INFO L87 Difference]: Start difference. First operand 5029 states and 6136 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:09,483 INFO L93 Difference]: Finished difference Result 6186 states and 7976 transitions. [2022-07-12 09:32:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:09,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:09,498 INFO L225 Difference]: With dead ends: 6186 [2022-07-12 09:32:09,498 INFO L226 Difference]: Without dead ends: 5740 [2022-07-12 09:32:09,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:09,502 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 1050 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:09,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 2033 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:32:09,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5740 states. [2022-07-12 09:32:09,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5740 to 5449. [2022-07-12 09:32:09,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 4296 states have (on average 1.2558193668528863) internal successors, (5395), 4369 states have internal predecessors, (5395), 585 states have call successors, (585), 448 states have call predecessors, (585), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2022-07-12 09:32:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 6789 transitions. [2022-07-12 09:32:09,822 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 6789 transitions. Word has length 113 [2022-07-12 09:32:09,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:09,822 INFO L495 AbstractCegarLoop]: Abstraction has 5449 states and 6789 transitions. [2022-07-12 09:32:09,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 6789 transitions. [2022-07-12 09:32:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:09,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:09,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:32:09,826 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:09,826 INFO L85 PathProgramCache]: Analyzing trace with hash 165441899, now seen corresponding path program 1 times [2022-07-12 09:32:09,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:09,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474512814] [2022-07-12 09:32:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:09,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:09,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:09,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:09,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474512814] [2022-07-12 09:32:09,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474512814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:09,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:09,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:09,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456698470] [2022-07-12 09:32:09,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:09,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:09,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:09,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:09,904 INFO L87 Difference]: Start difference. First operand 5449 states and 6789 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:11,571 INFO L93 Difference]: Finished difference Result 7700 states and 10361 transitions. [2022-07-12 09:32:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:11,586 INFO L225 Difference]: With dead ends: 7700 [2022-07-12 09:32:11,586 INFO L226 Difference]: Without dead ends: 6834 [2022-07-12 09:32:11,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:11,590 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1071 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:11,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 2007 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:32:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2022-07-12 09:32:11,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 6291. [2022-07-12 09:32:11,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6291 states, 5050 states have (on average 1.2996039603960396) internal successors, (6563), 5127 states have internal predecessors, (6563), 645 states have call successors, (645), 472 states have call predecessors, (645), 594 states have return successors, (895), 701 states have call predecessors, (895), 642 states have call successors, (895) [2022-07-12 09:32:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6291 states to 6291 states and 8103 transitions. [2022-07-12 09:32:11,904 INFO L78 Accepts]: Start accepts. Automaton has 6291 states and 8103 transitions. Word has length 113 [2022-07-12 09:32:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:11,904 INFO L495 AbstractCegarLoop]: Abstraction has 6291 states and 8103 transitions. [2022-07-12 09:32:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6291 states and 8103 transitions. [2022-07-12 09:32:11,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:11,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:11,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:11,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:32:11,910 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:11,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:11,911 INFO L85 PathProgramCache]: Analyzing trace with hash -718067091, now seen corresponding path program 1 times [2022-07-12 09:32:11,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:11,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516345443] [2022-07-12 09:32:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:11,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:11,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:11,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:11,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:11,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516345443] [2022-07-12 09:32:11,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516345443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:11,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:11,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210296285] [2022-07-12 09:32:11,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:11,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:11,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:11,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:11,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:11,991 INFO L87 Difference]: Start difference. First operand 6291 states and 8103 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:13,795 INFO L93 Difference]: Finished difference Result 10726 states and 15145 transitions. [2022-07-12 09:32:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:13,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:13,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:13,824 INFO L225 Difference]: With dead ends: 10726 [2022-07-12 09:32:13,825 INFO L226 Difference]: Without dead ends: 9018 [2022-07-12 09:32:13,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:13,833 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 1048 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:13,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2112 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:32:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9018 states. [2022-07-12 09:32:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9018 to 7981. [2022-07-12 09:32:14,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7981 states, 6564 states have (on average 1.356946983546618) internal successors, (8907), 6649 states have internal predecessors, (8907), 765 states have call successors, (765), 520 states have call predecessors, (765), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2022-07-12 09:32:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7981 states to 7981 states and 10757 transitions. [2022-07-12 09:32:14,239 INFO L78 Accepts]: Start accepts. Automaton has 7981 states and 10757 transitions. Word has length 113 [2022-07-12 09:32:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:14,239 INFO L495 AbstractCegarLoop]: Abstraction has 7981 states and 10757 transitions. [2022-07-12 09:32:14,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 7981 states and 10757 transitions. [2022-07-12 09:32:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:14,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:14,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:14,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:32:14,244 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash -746567381, now seen corresponding path program 1 times [2022-07-12 09:32:14,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:14,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993816451] [2022-07-12 09:32:14,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:14,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:14,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:14,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993816451] [2022-07-12 09:32:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993816451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:14,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870810728] [2022-07-12 09:32:14,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:14,325 INFO L87 Difference]: Start difference. First operand 7981 states and 10757 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:16,272 INFO L93 Difference]: Finished difference Result 16776 states and 24769 transitions. [2022-07-12 09:32:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:16,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:16,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:16,305 INFO L225 Difference]: With dead ends: 16776 [2022-07-12 09:32:16,305 INFO L226 Difference]: Without dead ends: 13378 [2022-07-12 09:32:16,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:16,318 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 1048 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:16,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2109 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:32:16,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13378 states. [2022-07-12 09:32:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13378 to 11375. [2022-07-12 09:32:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11375 states, 9606 states have (on average 1.417343327087237) internal successors, (13615), 9707 states have internal predecessors, (13615), 1005 states have call successors, (1005), 616 states have call predecessors, (1005), 762 states have return successors, (1519), 1085 states have call predecessors, (1519), 1002 states have call successors, (1519) [2022-07-12 09:32:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11375 states to 11375 states and 16139 transitions. [2022-07-12 09:32:16,834 INFO L78 Accepts]: Start accepts. Automaton has 11375 states and 16139 transitions. Word has length 113 [2022-07-12 09:32:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:16,834 INFO L495 AbstractCegarLoop]: Abstraction has 11375 states and 16139 transitions. [2022-07-12 09:32:16,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11375 states and 16139 transitions. [2022-07-12 09:32:16,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:16,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:16,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:16,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:32:16,840 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:16,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1607817901, now seen corresponding path program 1 times [2022-07-12 09:32:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:16,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61626915] [2022-07-12 09:32:16,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:16,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:16,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:16,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61626915] [2022-07-12 09:32:16,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61626915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:16,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:16,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629604129] [2022-07-12 09:32:16,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:16,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:16,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:16,902 INFO L87 Difference]: Start difference. First operand 11375 states and 16139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:19,273 INFO L93 Difference]: Finished difference Result 28874 states and 44205 transitions. [2022-07-12 09:32:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:32:19,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:19,319 INFO L225 Difference]: With dead ends: 28874 [2022-07-12 09:32:19,319 INFO L226 Difference]: Without dead ends: 22082 [2022-07-12 09:32:19,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:32:19,339 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1048 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:19,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 2106 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2039 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:32:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22082 states. [2022-07-12 09:32:20,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22082 to 18193. [2022-07-12 09:32:20,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18193 states, 15720 states have (on average 1.4678753180661577) internal successors, (23075), 15853 states have internal predecessors, (23075), 1485 states have call successors, (1485), 808 states have call predecessors, (1485), 986 states have return successors, (2549), 1597 states have call predecessors, (2549), 1482 states have call successors, (2549) [2022-07-12 09:32:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18193 states to 18193 states and 27109 transitions. [2022-07-12 09:32:20,242 INFO L78 Accepts]: Start accepts. Automaton has 18193 states and 27109 transitions. Word has length 113 [2022-07-12 09:32:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:20,242 INFO L495 AbstractCegarLoop]: Abstraction has 18193 states and 27109 transitions. [2022-07-12 09:32:20,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 18193 states and 27109 transitions. [2022-07-12 09:32:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:20,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:20,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:20,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:32:20,254 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:20,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:20,254 INFO L85 PathProgramCache]: Analyzing trace with hash -810086165, now seen corresponding path program 1 times [2022-07-12 09:32:20,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:20,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067351067] [2022-07-12 09:32:20,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:20,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:20,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:20,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067351067] [2022-07-12 09:32:20,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067351067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:20,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:20,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118882966] [2022-07-12 09:32:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:20,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:20,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:20,319 INFO L87 Difference]: Start difference. First operand 18193 states and 27109 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:23,997 INFO L93 Difference]: Finished difference Result 59020 states and 92635 transitions. [2022-07-12 09:32:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:24,111 INFO L225 Difference]: With dead ends: 59020 [2022-07-12 09:32:24,111 INFO L226 Difference]: Without dead ends: 45410 [2022-07-12 09:32:24,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:24,146 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 1114 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:24,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 2195 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:32:24,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45410 states. [2022-07-12 09:32:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45410 to 31699. [2022-07-12 09:32:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31699 states, 27882 states have (on average 1.5048776988738255) internal successors, (41959), 28079 states have internal predecessors, (41959), 2381 states have call successors, (2381), 1192 states have call predecessors, (2381), 1434 states have return successors, (5031), 2557 states have call predecessors, (5031), 2378 states have call successors, (5031) [2022-07-12 09:32:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31699 states to 31699 states and 49371 transitions. [2022-07-12 09:32:25,969 INFO L78 Accepts]: Start accepts. Automaton has 31699 states and 49371 transitions. Word has length 113 [2022-07-12 09:32:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:25,970 INFO L495 AbstractCegarLoop]: Abstraction has 31699 states and 49371 transitions. [2022-07-12 09:32:25,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 31699 states and 49371 transitions. [2022-07-12 09:32:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:25,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:25,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:25,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:32:25,988 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:25,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:25,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1580819731, now seen corresponding path program 1 times [2022-07-12 09:32:25,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:25,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809637941] [2022-07-12 09:32:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:25,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:26,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:26,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809637941] [2022-07-12 09:32:26,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809637941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:26,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:26,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:26,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638689989] [2022-07-12 09:32:26,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:26,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:26,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:26,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:26,046 INFO L87 Difference]: Start difference. First operand 31699 states and 49371 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:32,214 INFO L93 Difference]: Finished difference Result 109457 states and 176495 transitions. [2022-07-12 09:32:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:32,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:32,647 INFO L225 Difference]: With dead ends: 109457 [2022-07-12 09:32:32,647 INFO L226 Difference]: Without dead ends: 82341 [2022-07-12 09:32:32,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:32,698 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1106 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 2220 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:32,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 2159 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2220 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 09:32:32,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82341 states. [2022-07-12 09:32:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82341 to 58773. [2022-07-12 09:32:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58773 states, 52332 states have (on average 1.5295230451731254) internal successors, (80043), 52657 states have internal predecessors, (80043), 4109 states have call successors, (4109), 1960 states have call predecessors, (4109), 2330 states have return successors, (11389), 4413 states have call predecessors, (11389), 4106 states have call successors, (11389) [2022-07-12 09:32:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58773 states to 58773 states and 95541 transitions. [2022-07-12 09:32:35,952 INFO L78 Accepts]: Start accepts. Automaton has 58773 states and 95541 transitions. Word has length 113 [2022-07-12 09:32:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:35,952 INFO L495 AbstractCegarLoop]: Abstraction has 58773 states and 95541 transitions. [2022-07-12 09:32:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 58773 states and 95541 transitions. [2022-07-12 09:32:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:35,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:35,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:35,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:32:35,987 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:35,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2127871343, now seen corresponding path program 1 times [2022-07-12 09:32:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:35,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406915372] [2022-07-12 09:32:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:35,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:36,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:36,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406915372] [2022-07-12 09:32:36,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406915372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:36,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:36,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325833780] [2022-07-12 09:32:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:36,050 INFO L87 Difference]: Start difference. First operand 58773 states and 95541 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:32:46,852 INFO L93 Difference]: Finished difference Result 209623 states and 348819 transitions. [2022-07-12 09:32:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:32:46,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-07-12 09:32:46,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:32:47,368 INFO L225 Difference]: With dead ends: 209623 [2022-07-12 09:32:47,368 INFO L226 Difference]: Without dead ends: 155433 [2022-07-12 09:32:47,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:32:47,506 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1199 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:32:47,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 2078 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1968 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:32:47,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155433 states. [2022-07-12 09:32:54,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155433 to 112793. [2022-07-12 09:32:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112793 states, 101232 states have (on average 1.544363442389758) internal successors, (156339), 101813 states have internal predecessors, (156339), 7437 states have call successors, (7437), 3496 states have call predecessors, (7437), 4122 states have return successors, (28351), 7997 states have call predecessors, (28351), 7434 states have call successors, (28351) [2022-07-12 09:32:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112793 states to 112793 states and 192127 transitions. [2022-07-12 09:32:55,034 INFO L78 Accepts]: Start accepts. Automaton has 112793 states and 192127 transitions. Word has length 113 [2022-07-12 09:32:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:32:55,034 INFO L495 AbstractCegarLoop]: Abstraction has 112793 states and 192127 transitions. [2022-07-12 09:32:55,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:32:55,034 INFO L276 IsEmpty]: Start isEmpty. Operand 112793 states and 192127 transitions. [2022-07-12 09:32:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 09:32:55,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:32:55,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:32:55,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:32:55,097 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:32:55,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:32:55,097 INFO L85 PathProgramCache]: Analyzing trace with hash 169296557, now seen corresponding path program 1 times [2022-07-12 09:32:55,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:32:55,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124966275] [2022-07-12 09:32:55,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:32:55,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:32:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:32:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 09:32:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 09:32:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:32:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 09:32:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:32:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:32:55,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:32:55,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124966275] [2022-07-12 09:32:55,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124966275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:32:55,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:32:55,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:32:55,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898651992] [2022-07-12 09:32:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:32:55,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:32:55,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:32:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:32:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:32:55,353 INFO L87 Difference]: Start difference. First operand 112793 states and 192127 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)