./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.03.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a31ccbb50ed824a1b6eea67c3747e38f48ab93613ea1abf86baf8d129dc78945 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:32:10,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:32:10,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:32:10,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:32:10,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:32:10,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:32:10,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:32:10,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:32:10,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:32:10,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:32:10,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:32:10,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:32:10,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:32:10,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:32:11,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:32:11,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:32:11,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:32:11,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:32:11,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:32:11,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:32:11,014 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:32:11,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:32:11,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:32:11,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:32:11,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:32:11,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:32:11,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:32:11,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:32:11,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:32:11,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:32:11,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:32:11,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:32:11,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:32:11,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:32:11,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:32:11,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:32:11,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:32:11,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:32:11,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:32:11,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:32:11,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:32:11,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:32:11,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:32:11,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:32:11,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:32:11,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:32:11,069 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:32:11,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:32:11,070 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:32:11,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:32:11,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:32:11,070 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:32:11,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:32:11,072 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:32:11,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:32:11,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:32:11,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:32:11,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:32:11,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:32:11,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:32:11,073 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:32:11,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:32:11,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:32:11,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:32:11,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:32:11,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:32:11,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:32:11,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:32:11,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:32:11,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:32:11,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:32:11,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:32:11,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:32:11,077 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:32:11,077 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:32:11,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:32:11,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a31ccbb50ed824a1b6eea67c3747e38f48ab93613ea1abf86baf8d129dc78945 [2022-07-19 20:32:11,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:32:11,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:32:11,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:32:11,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:32:11,291 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:32:11,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-1.c [2022-07-19 20:32:11,349 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4899b4f83/4b57737523f14decae98518fae74a28f/FLAG8c76a88fe [2022-07-19 20:32:11,771 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:32:11,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-1.c [2022-07-19 20:32:11,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4899b4f83/4b57737523f14decae98518fae74a28f/FLAG8c76a88fe [2022-07-19 20:32:11,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4899b4f83/4b57737523f14decae98518fae74a28f [2022-07-19 20:32:11,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:32:11,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:32:11,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:32:11,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:32:11,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:32:11,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:32:11" (1/1) ... [2022-07-19 20:32:11,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7391b8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:11, skipping insertion in model container [2022-07-19 20:32:11,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:32:11" (1/1) ... [2022-07-19 20:32:11,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:32:11,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:32:12,008 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.03.cil-1.c[914,927] [2022-07-19 20:32:12,046 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.03.cil-1.c[7115,7128] [2022-07-19 20:32:12,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:32:12,089 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:32:12,100 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.03.cil-1.c[914,927] [2022-07-19 20:32:12,118 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.03.cil-1.c[7115,7128] [2022-07-19 20:32:12,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:32:12,187 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:32:12,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12 WrapperNode [2022-07-19 20:32:12,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:32:12,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:32:12,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:32:12,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:32:12,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,236 INFO L137 Inliner]: procedures = 59, calls = 67, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 523 [2022-07-19 20:32:12,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:32:12,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:32:12,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:32:12,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:32:12,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:32:12,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:32:12,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:32:12,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:32:12,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (1/1) ... [2022-07-19 20:32:12,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:32:12,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:12,311 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) [2022-07-19 20:32:12,316 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 [2022-07-19 20:32:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:32:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:32:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:32:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:32:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:32:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:32:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:32:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:32:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:32:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:32:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:32:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:32:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:32:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:32:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:32:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:32:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:32:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:32:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:32:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:32:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:32:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:32:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:32:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:32:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:32:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:32:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:32:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:32:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:32:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:32:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:32:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:32:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-19 20:32:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-19 20:32:12,483 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:32:12,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:32:13,022 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:32:13,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:32:13,030 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-19 20:32:13,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:32:13 BoogieIcfgContainer [2022-07-19 20:32:13,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:32:13,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:32:13,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:32:13,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:32:13,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:32:11" (1/3) ... [2022-07-19 20:32:13,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e173496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:32:13, skipping insertion in model container [2022-07-19 20:32:13,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:32:12" (2/3) ... [2022-07-19 20:32:13,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e173496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:32:13, skipping insertion in model container [2022-07-19 20:32:13,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:32:13" (3/3) ... [2022-07-19 20:32:13,040 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-1.c [2022-07-19 20:32:13,052 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:32:13,052 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:32:13,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:32:13,128 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@43b9a4e8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@571df239 [2022-07-19 20:32:13,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:32:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 215 states have (on average 1.5813953488372092) internal successors, (340), 223 states have internal predecessors, (340), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2022-07-19 20:32:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:13,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:13,162 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] [2022-07-19 20:32:13,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:13,169 INFO L85 PathProgramCache]: Analyzing trace with hash 207768249, now seen corresponding path program 1 times [2022-07-19 20:32:13,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:13,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041105555] [2022-07-19 20:32:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:13,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:13,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:13,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041105555] [2022-07-19 20:32:13,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041105555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:13,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:13,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:13,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834918592] [2022-07-19 20:32:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:13,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:13,491 INFO L87 Difference]: Start difference. First operand has 266 states, 215 states have (on average 1.5813953488372092) internal successors, (340), 223 states have internal predecessors, (340), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) 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) [2022-07-19 20:32:14,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:14,324 INFO L93 Difference]: Finished difference Result 647 states and 988 transitions. [2022-07-19 20:32:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:32:14,329 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 [2022-07-19 20:32:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:14,351 INFO L225 Difference]: With dead ends: 647 [2022-07-19 20:32:14,351 INFO L226 Difference]: Without dead ends: 390 [2022-07-19 20:32:14,360 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 [2022-07-19 20:32:14,363 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 668 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:14,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1101 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-07-19 20:32:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 351. [2022-07-19 20:32:14,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 283 states have (on average 1.459363957597173) internal successors, (413), 290 states have internal predecessors, (413), 44 states have call successors, (44), 22 states have call predecessors, (44), 22 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-19 20:32:14,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 502 transitions. [2022-07-19 20:32:14,434 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 502 transitions. Word has length 65 [2022-07-19 20:32:14,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:14,435 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 502 transitions. [2022-07-19 20:32:14,435 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) [2022-07-19 20:32:14,435 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 502 transitions. [2022-07-19 20:32:14,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:14,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:14,439 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] [2022-07-19 20:32:14,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:32:14,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1886656889, now seen corresponding path program 1 times [2022-07-19 20:32:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:14,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588264868] [2022-07-19 20:32:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:14,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:14,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588264868] [2022-07-19 20:32:14,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588264868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:14,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:14,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:14,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835987966] [2022-07-19 20:32:14,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:14,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:14,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:14,612 INFO L87 Difference]: Start difference. First operand 351 states and 502 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) [2022-07-19 20:32:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:15,502 INFO L93 Difference]: Finished difference Result 698 states and 979 transitions. [2022-07-19 20:32:15,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:32:15,503 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 [2022-07-19 20:32:15,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:15,511 INFO L225 Difference]: With dead ends: 698 [2022-07-19 20:32:15,511 INFO L226 Difference]: Without dead ends: 521 [2022-07-19 20:32:15,514 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 [2022-07-19 20:32:15,515 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 697 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:15,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1541 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-19 20:32:15,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 447. [2022-07-19 20:32:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 359 states have (on average 1.4401114206128134) internal successors, (517), 368 states have internal predecessors, (517), 55 states have call successors, (55), 29 states have call predecessors, (55), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2022-07-19 20:32:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 636 transitions. [2022-07-19 20:32:15,589 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 636 transitions. Word has length 65 [2022-07-19 20:32:15,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:15,590 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 636 transitions. [2022-07-19 20:32:15,590 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) [2022-07-19 20:32:15,590 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 636 transitions. [2022-07-19 20:32:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:15,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:15,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:15,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:32:15,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:15,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:15,603 INFO L85 PathProgramCache]: Analyzing trace with hash -141929221, now seen corresponding path program 1 times [2022-07-19 20:32:15,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:15,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482334755] [2022-07-19 20:32:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:15,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:15,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:15,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:15,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482334755] [2022-07-19 20:32:15,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482334755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:15,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:15,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:15,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074992355] [2022-07-19 20:32:15,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:15,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:15,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:15,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:15,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:15,775 INFO L87 Difference]: Start difference. First operand 447 states and 636 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) [2022-07-19 20:32:16,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:16,541 INFO L93 Difference]: Finished difference Result 748 states and 1050 transitions. [2022-07-19 20:32:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:16,541 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 [2022-07-19 20:32:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:16,545 INFO L225 Difference]: With dead ends: 748 [2022-07-19 20:32:16,545 INFO L226 Difference]: Without dead ends: 481 [2022-07-19 20:32:16,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:32:16,548 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 292 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:16,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1635 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-07-19 20:32:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 452. [2022-07-19 20:32:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 363 states have (on average 1.4297520661157024) internal successors, (519), 372 states have internal predecessors, (519), 55 states have call successors, (55), 29 states have call predecessors, (55), 32 states have return successors, (65), 54 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-19 20:32:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 639 transitions. [2022-07-19 20:32:16,578 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 639 transitions. Word has length 65 [2022-07-19 20:32:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:16,578 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 639 transitions. [2022-07-19 20:32:16,578 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) [2022-07-19 20:32:16,579 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 639 transitions. [2022-07-19 20:32:16,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:16,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:16,580 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] [2022-07-19 20:32:16,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:32:16,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:16,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1171288519, now seen corresponding path program 1 times [2022-07-19 20:32:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:16,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512798644] [2022-07-19 20:32:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:16,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:16,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512798644] [2022-07-19 20:32:16,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512798644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:16,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:16,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:16,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358865728] [2022-07-19 20:32:16,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:16,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:16,692 INFO L87 Difference]: Start difference. First operand 452 states and 639 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) [2022-07-19 20:32:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:17,397 INFO L93 Difference]: Finished difference Result 770 states and 1072 transitions. [2022-07-19 20:32:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:32:17,399 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 [2022-07-19 20:32:17,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:17,403 INFO L225 Difference]: With dead ends: 770 [2022-07-19 20:32:17,403 INFO L226 Difference]: Without dead ends: 498 [2022-07-19 20:32:17,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:17,414 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 432 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:17,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1468 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:32:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-07-19 20:32:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 467. [2022-07-19 20:32:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 375 states have (on average 1.416) internal successors, (531), 384 states have internal predecessors, (531), 55 states have call successors, (55), 29 states have call predecessors, (55), 35 states have return successors, (68), 57 states have call predecessors, (68), 51 states have call successors, (68) [2022-07-19 20:32:17,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 654 transitions. [2022-07-19 20:32:17,454 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 654 transitions. Word has length 65 [2022-07-19 20:32:17,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:17,455 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 654 transitions. [2022-07-19 20:32:17,455 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) [2022-07-19 20:32:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 654 transitions. [2022-07-19 20:32:17,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:17,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:17,457 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] [2022-07-19 20:32:17,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:32:17,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:17,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:17,458 INFO L85 PathProgramCache]: Analyzing trace with hash 214914875, now seen corresponding path program 1 times [2022-07-19 20:32:17,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:17,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142577102] [2022-07-19 20:32:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:17,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:17,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142577102] [2022-07-19 20:32:17,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142577102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:17,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:17,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:17,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019960517] [2022-07-19 20:32:17,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:17,559 INFO L87 Difference]: Start difference. First operand 467 states and 654 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) [2022-07-19 20:32:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:18,331 INFO L93 Difference]: Finished difference Result 859 states and 1165 transitions. [2022-07-19 20:32:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:32:18,332 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 [2022-07-19 20:32:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:18,335 INFO L225 Difference]: With dead ends: 859 [2022-07-19 20:32:18,335 INFO L226 Difference]: Without dead ends: 574 [2022-07-19 20:32:18,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:32:18,340 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 887 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:18,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1136 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:18,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-07-19 20:32:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 479. [2022-07-19 20:32:18,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 385 states have (on average 1.405194805194805) internal successors, (541), 394 states have internal predecessors, (541), 56 states have call successors, (56), 30 states have call predecessors, (56), 36 states have return successors, (67), 58 states have call predecessors, (67), 52 states have call successors, (67) [2022-07-19 20:32:18,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 664 transitions. [2022-07-19 20:32:18,368 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 664 transitions. Word has length 65 [2022-07-19 20:32:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:18,369 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 664 transitions. [2022-07-19 20:32:18,369 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) [2022-07-19 20:32:18,369 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 664 transitions. [2022-07-19 20:32:18,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:32:18,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:18,371 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] [2022-07-19 20:32:18,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:32:18,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:18,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:18,372 INFO L85 PathProgramCache]: Analyzing trace with hash 80901369, now seen corresponding path program 1 times [2022-07-19 20:32:18,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:18,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132835609] [2022-07-19 20:32:18,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:18,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:18,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:18,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132835609] [2022-07-19 20:32:18,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132835609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:18,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:18,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:18,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182823212] [2022-07-19 20:32:18,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:18,490 INFO L87 Difference]: Start difference. First operand 479 states and 664 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) [2022-07-19 20:32:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:18,870 INFO L93 Difference]: Finished difference Result 1121 states and 1511 transitions. [2022-07-19 20:32:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:32:18,870 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 [2022-07-19 20:32:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:18,876 INFO L225 Difference]: With dead ends: 1121 [2022-07-19 20:32:18,876 INFO L226 Difference]: Without dead ends: 825 [2022-07-19 20:32:18,877 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 [2022-07-19 20:32:18,879 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1050 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:18,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 730 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-07-19 20:32:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 769. [2022-07-19 20:32:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 609 states have (on average 1.3596059113300492) internal successors, (828), 625 states have internal predecessors, (828), 91 states have call successors, (91), 52 states have call predecessors, (91), 67 states have return successors, (124), 98 states have call predecessors, (124), 87 states have call successors, (124) [2022-07-19 20:32:18,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1043 transitions. [2022-07-19 20:32:18,918 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1043 transitions. Word has length 65 [2022-07-19 20:32:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:18,918 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 1043 transitions. [2022-07-19 20:32:18,918 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) [2022-07-19 20:32:18,919 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1043 transitions. [2022-07-19 20:32:18,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:32:18,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:18,921 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] [2022-07-19 20:32:18,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:32:18,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1103860140, now seen corresponding path program 1 times [2022-07-19 20:32:18,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:18,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621059054] [2022-07-19 20:32:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:18,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:19,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:19,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621059054] [2022-07-19 20:32:19,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621059054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:19,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:19,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:19,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177185539] [2022-07-19 20:32:19,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:19,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:19,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:19,006 INFO L87 Difference]: Start difference. First operand 769 states and 1043 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) [2022-07-19 20:32:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:19,429 INFO L93 Difference]: Finished difference Result 1972 states and 2614 transitions. [2022-07-19 20:32:19,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:32:19,430 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 [2022-07-19 20:32:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:19,437 INFO L225 Difference]: With dead ends: 1972 [2022-07-19 20:32:19,438 INFO L226 Difference]: Without dead ends: 1365 [2022-07-19 20:32:19,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:19,440 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 653 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:19,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 849 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-07-19 20:32:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1250. [2022-07-19 20:32:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 988 states have (on average 1.3248987854251013) internal successors, (1309), 1007 states have internal predecessors, (1309), 136 states have call successors, (136), 96 states have call predecessors, (136), 124 states have return successors, (196), 153 states have call predecessors, (196), 132 states have call successors, (196) [2022-07-19 20:32:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1641 transitions. [2022-07-19 20:32:19,502 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1641 transitions. Word has length 66 [2022-07-19 20:32:19,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:19,503 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1641 transitions. [2022-07-19 20:32:19,503 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) [2022-07-19 20:32:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1641 transitions. [2022-07-19 20:32:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:32:19,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:19,505 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] [2022-07-19 20:32:19,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:32:19,506 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:19,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:19,506 INFO L85 PathProgramCache]: Analyzing trace with hash 354379519, now seen corresponding path program 1 times [2022-07-19 20:32:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:19,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128920886] [2022-07-19 20:32:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:19,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:19,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128920886] [2022-07-19 20:32:19,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128920886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:19,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:19,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:19,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934573271] [2022-07-19 20:32:19,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:19,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:19,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:19,584 INFO L87 Difference]: Start difference. First operand 1250 states and 1641 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) [2022-07-19 20:32:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:19,980 INFO L93 Difference]: Finished difference Result 3438 states and 4447 transitions. [2022-07-19 20:32:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:19,981 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 [2022-07-19 20:32:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:19,992 INFO L225 Difference]: With dead ends: 3438 [2022-07-19 20:32:19,993 INFO L226 Difference]: Without dead ends: 2370 [2022-07-19 20:32:19,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:32:19,998 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 873 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:19,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 728 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:20,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2370 states. [2022-07-19 20:32:20,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2370 to 2112. [2022-07-19 20:32:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1654 states have (on average 1.2914147521160821) internal successors, (2136), 1683 states have internal predecessors, (2136), 234 states have call successors, (234), 180 states have call predecessors, (234), 222 states have return successors, (332), 255 states have call predecessors, (332), 230 states have call successors, (332) [2022-07-19 20:32:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2702 transitions. [2022-07-19 20:32:20,103 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2702 transitions. Word has length 66 [2022-07-19 20:32:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:20,103 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 2702 transitions. [2022-07-19 20:32:20,104 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) [2022-07-19 20:32:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2702 transitions. [2022-07-19 20:32:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 20:32:20,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:20,107 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] [2022-07-19 20:32:20,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:32:20,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1353227277, now seen corresponding path program 1 times [2022-07-19 20:32:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:20,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401650804] [2022-07-19 20:32:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:20,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:20,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401650804] [2022-07-19 20:32:20,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401650804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:20,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:20,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137420246] [2022-07-19 20:32:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:20,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:20,187 INFO L87 Difference]: Start difference. First operand 2112 states and 2702 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) [2022-07-19 20:32:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:20,556 INFO L93 Difference]: Finished difference Result 5022 states and 6352 transitions. [2022-07-19 20:32:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:32:20,556 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 [2022-07-19 20:32:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:20,571 INFO L225 Difference]: With dead ends: 5022 [2022-07-19 20:32:20,572 INFO L226 Difference]: Without dead ends: 3092 [2022-07-19 20:32:20,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:20,579 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 854 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:20,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 764 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3092 states. [2022-07-19 20:32:20,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3092 to 2844. [2022-07-19 20:32:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2222 states have (on average 1.278127812781278) internal successors, (2840), 2259 states have internal predecessors, (2840), 314 states have call successors, (314), 250 states have call predecessors, (314), 306 states have return successors, (441), 341 states have call predecessors, (441), 310 states have call successors, (441) [2022-07-19 20:32:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3595 transitions. [2022-07-19 20:32:20,702 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3595 transitions. Word has length 72 [2022-07-19 20:32:20,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:20,704 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 3595 transitions. [2022-07-19 20:32:20,704 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) [2022-07-19 20:32:20,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3595 transitions. [2022-07-19 20:32:20,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 20:32:20,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:20,731 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] [2022-07-19 20:32:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:32:20,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:20,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 483330199, now seen corresponding path program 1 times [2022-07-19 20:32:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:20,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469569368] [2022-07-19 20:32:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:20,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:20,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:20,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469569368] [2022-07-19 20:32:20,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469569368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:20,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:20,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:20,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780341000] [2022-07-19 20:32:20,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:20,813 INFO L87 Difference]: Start difference. First operand 2844 states and 3595 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) [2022-07-19 20:32:21,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:21,286 INFO L93 Difference]: Finished difference Result 3618 states and 4526 transitions. [2022-07-19 20:32:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:21,286 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 [2022-07-19 20:32:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:21,305 INFO L225 Difference]: With dead ends: 3618 [2022-07-19 20:32:21,305 INFO L226 Difference]: Without dead ends: 3615 [2022-07-19 20:32:21,308 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 [2022-07-19 20:32:21,308 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1225 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:21,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 742 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2022-07-19 20:32:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3338. [2022-07-19 20:32:21,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 2607 states have (on average 1.2704257767548908) internal successors, (3312), 2649 states have internal predecessors, (3312), 364 states have call successors, (364), 294 states have call predecessors, (364), 365 states have return successors, (520), 401 states have call predecessors, (520), 361 states have call successors, (520) [2022-07-19 20:32:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 4196 transitions. [2022-07-19 20:32:21,498 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 4196 transitions. Word has length 73 [2022-07-19 20:32:21,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:21,498 INFO L495 AbstractCegarLoop]: Abstraction has 3338 states and 4196 transitions. [2022-07-19 20:32:21,498 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) [2022-07-19 20:32:21,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 4196 transitions. [2022-07-19 20:32:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 20:32:21,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:21,502 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] [2022-07-19 20:32:21,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:32:21,502 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2097533117, now seen corresponding path program 1 times [2022-07-19 20:32:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:21,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670341074] [2022-07-19 20:32:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:21,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670341074] [2022-07-19 20:32:21,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670341074] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497830432] [2022-07-19 20:32:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:21,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:21,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:21,625 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) [2022-07-19 20:32:21,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:32:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:21,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 20:32:21,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:22,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:32:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:22,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497830432] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:32:22,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:32:22,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-19 20:32:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609479038] [2022-07-19 20:32:22,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:32:22,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:32:22,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:22,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:32:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:22,211 INFO L87 Difference]: Start difference. First operand 3338 states and 4196 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) [2022-07-19 20:32:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:23,644 INFO L93 Difference]: Finished difference Result 7779 states and 9682 transitions. [2022-07-19 20:32:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 20:32:23,645 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 [2022-07-19 20:32:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:23,677 INFO L225 Difference]: With dead ends: 7779 [2022-07-19 20:32:23,677 INFO L226 Difference]: Without dead ends: 7776 [2022-07-19 20:32:23,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-19 20:32:23,683 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 1443 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:23,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1697 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:32:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7776 states. [2022-07-19 20:32:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7776 to 5128. [2022-07-19 20:32:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5128 states, 4011 states have (on average 1.268511593118923) internal successors, (5088), 4075 states have internal predecessors, (5088), 548 states have call successors, (548), 452 states have call predecessors, (548), 567 states have return successors, (798), 607 states have call predecessors, (798), 545 states have call successors, (798) [2022-07-19 20:32:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5128 states to 5128 states and 6434 transitions. [2022-07-19 20:32:24,069 INFO L78 Accepts]: Start accepts. Automaton has 5128 states and 6434 transitions. Word has length 74 [2022-07-19 20:32:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:24,069 INFO L495 AbstractCegarLoop]: Abstraction has 5128 states and 6434 transitions. [2022-07-19 20:32:24,070 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) [2022-07-19 20:32:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5128 states and 6434 transitions. [2022-07-19 20:32:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 20:32:24,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:24,072 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] [2022-07-19 20:32:24,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:24,287 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,SelfDestructingSolverStorable10 [2022-07-19 20:32:24,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:24,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash -863953769, now seen corresponding path program 2 times [2022-07-19 20:32:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:24,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530261545] [2022-07-19 20:32:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:24,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:24,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530261545] [2022-07-19 20:32:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530261545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:24,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:24,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:24,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584613459] [2022-07-19 20:32:24,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:24,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:24,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:24,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:24,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:24,344 INFO L87 Difference]: Start difference. First operand 5128 states and 6434 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) [2022-07-19 20:32:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:24,802 INFO L93 Difference]: Finished difference Result 7810 states and 9807 transitions. [2022-07-19 20:32:24,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:32:24,802 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 [2022-07-19 20:32:24,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:24,818 INFO L225 Difference]: With dead ends: 7810 [2022-07-19 20:32:24,818 INFO L226 Difference]: Without dead ends: 3735 [2022-07-19 20:32:24,827 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 [2022-07-19 20:32:24,828 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 741 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:24,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 849 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2022-07-19 20:32:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3500. [2022-07-19 20:32:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 2739 states have (on average 1.2515516611902153) internal successors, (3428), 2781 states have internal predecessors, (3428), 380 states have call successors, (380), 308 states have call predecessors, (380), 379 states have return successors, (524), 417 states have call predecessors, (524), 377 states have call successors, (524) [2022-07-19 20:32:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 4332 transitions. [2022-07-19 20:32:25,071 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 4332 transitions. Word has length 77 [2022-07-19 20:32:25,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:25,071 INFO L495 AbstractCegarLoop]: Abstraction has 3500 states and 4332 transitions. [2022-07-19 20:32:25,072 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) [2022-07-19 20:32:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 4332 transitions. [2022-07-19 20:32:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:25,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:25,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:25,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:32:25,076 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:25,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1029310995, now seen corresponding path program 1 times [2022-07-19 20:32:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:25,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961185991] [2022-07-19 20:32:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:25,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961185991] [2022-07-19 20:32:25,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961185991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:25,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:25,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:25,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92924743] [2022-07-19 20:32:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:25,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:25,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:25,139 INFO L87 Difference]: Start difference. First operand 3500 states and 4332 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:26,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:26,122 INFO L93 Difference]: Finished difference Result 3882 states and 4923 transitions. [2022-07-19 20:32:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:32:26,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:26,146 INFO L225 Difference]: With dead ends: 3882 [2022-07-19 20:32:26,147 INFO L226 Difference]: Without dead ends: 3734 [2022-07-19 20:32:26,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:26,150 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 752 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:26,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 968 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-07-19 20:32:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3647. [2022-07-19 20:32:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3647 states, 2867 states have (on average 1.264387861876526) internal successors, (3625), 2910 states have internal predecessors, (3625), 392 states have call successors, (392), 314 states have call predecessors, (392), 386 states have return successors, (539), 429 states have call predecessors, (539), 389 states have call successors, (539) [2022-07-19 20:32:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3647 states to 3647 states and 4556 transitions. [2022-07-19 20:32:26,416 INFO L78 Accepts]: Start accepts. Automaton has 3647 states and 4556 transitions. Word has length 80 [2022-07-19 20:32:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:26,416 INFO L495 AbstractCegarLoop]: Abstraction has 3647 states and 4556 transitions. [2022-07-19 20:32:26,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3647 states and 4556 transitions. [2022-07-19 20:32:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:26,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:26,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:26,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:32:26,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash -212129521, now seen corresponding path program 1 times [2022-07-19 20:32:26,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:26,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182180729] [2022-07-19 20:32:26,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:26,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:26,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:26,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182180729] [2022-07-19 20:32:26,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182180729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:26,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:26,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030065221] [2022-07-19 20:32:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:26,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:26,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:26,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:26,495 INFO L87 Difference]: Start difference. First operand 3647 states and 4556 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:27,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:27,760 INFO L93 Difference]: Finished difference Result 4220 states and 5436 transitions. [2022-07-19 20:32:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:32:27,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:27,776 INFO L225 Difference]: With dead ends: 4220 [2022-07-19 20:32:27,776 INFO L226 Difference]: Without dead ends: 3925 [2022-07-19 20:32:27,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:32:27,779 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 743 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:27,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1526 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:32:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2022-07-19 20:32:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3785. [2022-07-19 20:32:28,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 2986 states have (on average 1.2739450770261218) internal successors, (3804), 3030 states have internal predecessors, (3804), 404 states have call successors, (404), 320 states have call predecessors, (404), 393 states have return successors, (553), 442 states have call predecessors, (553), 401 states have call successors, (553) [2022-07-19 20:32:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 4761 transitions. [2022-07-19 20:32:28,021 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 4761 transitions. Word has length 80 [2022-07-19 20:32:28,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:28,021 INFO L495 AbstractCegarLoop]: Abstraction has 3785 states and 4761 transitions. [2022-07-19 20:32:28,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 4761 transitions. [2022-07-19 20:32:28,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:28,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:28,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:28,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:32:28,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:28,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:28,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1898309359, now seen corresponding path program 1 times [2022-07-19 20:32:28,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:28,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371078042] [2022-07-19 20:32:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:28,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:28,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:28,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371078042] [2022-07-19 20:32:28,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371078042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:28,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:28,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:28,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788023709] [2022-07-19 20:32:28,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:28,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:28,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:28,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:28,101 INFO L87 Difference]: Start difference. First operand 3785 states and 4761 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:29,339 INFO L93 Difference]: Finished difference Result 4717 states and 6189 transitions. [2022-07-19 20:32:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:32:29,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:29,361 INFO L225 Difference]: With dead ends: 4717 [2022-07-19 20:32:29,361 INFO L226 Difference]: Without dead ends: 4284 [2022-07-19 20:32:29,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:32:29,369 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 740 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:29,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1518 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:32:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2022-07-19 20:32:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 4062. [2022-07-19 20:32:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 3225 states have (on average 1.2908527131782945) internal successors, (4163), 3271 states have internal predecessors, (4163), 428 states have call successors, (428), 332 states have call predecessors, (428), 407 states have return successors, (585), 468 states have call predecessors, (585), 425 states have call successors, (585) [2022-07-19 20:32:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 5176 transitions. [2022-07-19 20:32:29,646 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 5176 transitions. Word has length 80 [2022-07-19 20:32:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:29,646 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 5176 transitions. [2022-07-19 20:32:29,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 5176 transitions. [2022-07-19 20:32:29,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:29,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:29,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:32:29,650 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:29,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1952702257, now seen corresponding path program 1 times [2022-07-19 20:32:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:29,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431582570] [2022-07-19 20:32:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431582570] [2022-07-19 20:32:29,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431582570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:29,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:29,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:29,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612387732] [2022-07-19 20:32:29,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:29,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:29,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:29,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:29,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:29,732 INFO L87 Difference]: Start difference. First operand 4062 states and 5176 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:30,521 INFO L93 Difference]: Finished difference Result 4982 states and 6595 transitions. [2022-07-19 20:32:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:30,535 INFO L225 Difference]: With dead ends: 4982 [2022-07-19 20:32:30,536 INFO L226 Difference]: Without dead ends: 4272 [2022-07-19 20:32:30,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:30,539 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 613 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:30,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 954 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:32:30,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-07-19 20:32:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4062. [2022-07-19 20:32:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 3225 states have (on average 1.2893023255813953) internal successors, (4158), 3271 states have internal predecessors, (4158), 428 states have call successors, (428), 332 states have call predecessors, (428), 407 states have return successors, (585), 468 states have call predecessors, (585), 425 states have call successors, (585) [2022-07-19 20:32:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 5171 transitions. [2022-07-19 20:32:30,801 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 5171 transitions. Word has length 80 [2022-07-19 20:32:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:30,801 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 5171 transitions. [2022-07-19 20:32:30,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 5171 transitions. [2022-07-19 20:32:30,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:30,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:30,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:30,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:32:30,805 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:30,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:30,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1924868433, now seen corresponding path program 1 times [2022-07-19 20:32:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:30,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669240290] [2022-07-19 20:32:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:30,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:30,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:30,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669240290] [2022-07-19 20:32:30,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669240290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:30,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:30,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:30,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992628343] [2022-07-19 20:32:30,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:30,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:30,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:30,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:30,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:30,869 INFO L87 Difference]: Start difference. First operand 4062 states and 5171 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:31,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:31,607 INFO L93 Difference]: Finished difference Result 4976 states and 6569 transitions. [2022-07-19 20:32:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:31,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:31,621 INFO L225 Difference]: With dead ends: 4976 [2022-07-19 20:32:31,622 INFO L226 Difference]: Without dead ends: 4266 [2022-07-19 20:32:31,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:31,646 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 609 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:31,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 948 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:32:31,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2022-07-19 20:32:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 4062. [2022-07-19 20:32:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 3225 states have (on average 1.2877519379844962) internal successors, (4153), 3271 states have internal predecessors, (4153), 428 states have call successors, (428), 332 states have call predecessors, (428), 407 states have return successors, (585), 468 states have call predecessors, (585), 425 states have call successors, (585) [2022-07-19 20:32:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 5166 transitions. [2022-07-19 20:32:31,880 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 5166 transitions. Word has length 80 [2022-07-19 20:32:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:31,881 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 5166 transitions. [2022-07-19 20:32:31,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:31,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 5166 transitions. [2022-07-19 20:32:31,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:31,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:31,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:31,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:32:31,885 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:31,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1690826609, now seen corresponding path program 1 times [2022-07-19 20:32:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:31,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125896068] [2022-07-19 20:32:31,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:31,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:31,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:31,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:31,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125896068] [2022-07-19 20:32:31,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125896068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:31,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:31,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249929227] [2022-07-19 20:32:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:31,953 INFO L87 Difference]: Start difference. First operand 4062 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:33,213 INFO L93 Difference]: Finished difference Result 5819 states and 7800 transitions. [2022-07-19 20:32:33,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:32:33,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:33,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:33,227 INFO L225 Difference]: With dead ends: 5819 [2022-07-19 20:32:33,227 INFO L226 Difference]: Without dead ends: 5109 [2022-07-19 20:32:33,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:33,231 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 858 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:33,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1157 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:32:33,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5109 states. [2022-07-19 20:32:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5109 to 4573. [2022-07-19 20:32:33,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 3664 states have (on average 1.3081331877729259) internal successors, (4793), 3714 states have internal predecessors, (4793), 472 states have call successors, (472), 356 states have call predecessors, (472), 435 states have return successors, (651), 516 states have call predecessors, (651), 469 states have call successors, (651) [2022-07-19 20:32:33,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 5916 transitions. [2022-07-19 20:32:33,535 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 5916 transitions. Word has length 80 [2022-07-19 20:32:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:33,535 INFO L495 AbstractCegarLoop]: Abstraction has 4573 states and 5916 transitions. [2022-07-19 20:32:33,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 5916 transitions. [2022-07-19 20:32:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:33,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:33,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:33,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:32:33,540 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:33,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash 270748049, now seen corresponding path program 1 times [2022-07-19 20:32:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:33,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748340112] [2022-07-19 20:32:33,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:33,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:33,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:33,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:33,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:33,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748340112] [2022-07-19 20:32:33,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748340112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:33,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:33,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:33,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691405589] [2022-07-19 20:32:33,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:33,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:33,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:33,615 INFO L87 Difference]: Start difference. First operand 4573 states and 5916 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:34,942 INFO L93 Difference]: Finished difference Result 7514 states and 10302 transitions. [2022-07-19 20:32:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:32:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:34,962 INFO L225 Difference]: With dead ends: 7514 [2022-07-19 20:32:34,962 INFO L226 Difference]: Without dead ends: 6293 [2022-07-19 20:32:34,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:32:34,970 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 736 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:34,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1483 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:32:34,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6293 states. [2022-07-19 20:32:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6293 to 5634. [2022-07-19 20:32:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5634 states, 4585 states have (on average 1.3424209378407852) internal successors, (6155), 4643 states have internal predecessors, (6155), 556 states have call successors, (556), 404 states have call predecessors, (556), 491 states have return successors, (797), 608 states have call predecessors, (797), 553 states have call successors, (797) [2022-07-19 20:32:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5634 states to 5634 states and 7508 transitions. [2022-07-19 20:32:35,296 INFO L78 Accepts]: Start accepts. Automaton has 5634 states and 7508 transitions. Word has length 80 [2022-07-19 20:32:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:35,296 INFO L495 AbstractCegarLoop]: Abstraction has 5634 states and 7508 transitions. [2022-07-19 20:32:35,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5634 states and 7508 transitions. [2022-07-19 20:32:35,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:35,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:35,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:35,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:32:35,301 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:35,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:35,302 INFO L85 PathProgramCache]: Analyzing trace with hash 831447827, now seen corresponding path program 1 times [2022-07-19 20:32:35,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:35,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256124622] [2022-07-19 20:32:35,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:35,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:35,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:35,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:35,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256124622] [2022-07-19 20:32:35,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256124622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:35,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:35,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:35,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325582031] [2022-07-19 20:32:35,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:35,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:35,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:35,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:35,377 INFO L87 Difference]: Start difference. First operand 5634 states and 7508 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:36,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:36,498 INFO L93 Difference]: Finished difference Result 9406 states and 13156 transitions. [2022-07-19 20:32:36,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:32:36,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:36,518 INFO L225 Difference]: With dead ends: 9406 [2022-07-19 20:32:36,518 INFO L226 Difference]: Without dead ends: 7125 [2022-07-19 20:32:36,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:32:36,527 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 460 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:36,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1228 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7125 states. [2022-07-19 20:32:36,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7125 to 5685. [2022-07-19 20:32:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 4636 states have (on average 1.3386540120793788) internal successors, (6206), 4694 states have internal predecessors, (6206), 556 states have call successors, (556), 404 states have call predecessors, (556), 491 states have return successors, (797), 608 states have call predecessors, (797), 553 states have call successors, (797) [2022-07-19 20:32:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7559 transitions. [2022-07-19 20:32:36,906 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7559 transitions. Word has length 80 [2022-07-19 20:32:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:36,906 INFO L495 AbstractCegarLoop]: Abstraction has 5685 states and 7559 transitions. [2022-07-19 20:32:36,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7559 transitions. [2022-07-19 20:32:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 20:32:36,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:36,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:36,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:32:36,911 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash 350367569, now seen corresponding path program 1 times [2022-07-19 20:32:36,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:36,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160493969] [2022-07-19 20:32:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:36,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:37,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:32:37,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:37,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160493969] [2022-07-19 20:32:37,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160493969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:37,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:37,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156768430] [2022-07-19 20:32:37,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:37,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:37,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:37,008 INFO L87 Difference]: Start difference. First operand 5685 states and 7559 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:39,018 INFO L93 Difference]: Finished difference Result 13719 states and 19840 transitions. [2022-07-19 20:32:39,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:32:39,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2022-07-19 20:32:39,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:39,056 INFO L225 Difference]: With dead ends: 13719 [2022-07-19 20:32:39,056 INFO L226 Difference]: Without dead ends: 11387 [2022-07-19 20:32:39,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-19 20:32:39,071 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1539 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:39,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 1325 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:32:39,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11387 states. [2022-07-19 20:32:39,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 10008. [2022-07-19 20:32:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10008 states, 8344 states have (on average 1.3851869606903164) internal successors, (11558), 8461 states have internal predecessors, (11558), 929 states have call successors, (929), 614 states have call predecessors, (929), 733 states have return successors, (1452), 954 states have call predecessors, (1452), 926 states have call successors, (1452) [2022-07-19 20:32:39,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10008 states to 10008 states and 13939 transitions. [2022-07-19 20:32:39,780 INFO L78 Accepts]: Start accepts. Automaton has 10008 states and 13939 transitions. Word has length 80 [2022-07-19 20:32:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:39,781 INFO L495 AbstractCegarLoop]: Abstraction has 10008 states and 13939 transitions. [2022-07-19 20:32:39,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:32:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 10008 states and 13939 transitions. [2022-07-19 20:32:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 20:32:39,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:39,786 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] [2022-07-19 20:32:39,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:32:39,787 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:39,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:39,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1956288145, now seen corresponding path program 1 times [2022-07-19 20:32:39,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:39,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391439705] [2022-07-19 20:32:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:39,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:32:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:32:39,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:39,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391439705] [2022-07-19 20:32:39,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391439705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:39,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:39,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:32:39,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784570373] [2022-07-19 20:32:39,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:39,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:32:39,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:32:39,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:39,854 INFO L87 Difference]: Start difference. First operand 10008 states and 13939 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) [2022-07-19 20:32:41,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:41,156 INFO L93 Difference]: Finished difference Result 16880 states and 22356 transitions. [2022-07-19 20:32:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 20:32:41,157 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 [2022-07-19 20:32:41,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:41,192 INFO L225 Difference]: With dead ends: 16880 [2022-07-19 20:32:41,193 INFO L226 Difference]: Without dead ends: 12243 [2022-07-19 20:32:41,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-19 20:32:41,209 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 887 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:41,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 1376 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:32:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12243 states. [2022-07-19 20:32:41,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12243 to 11923. [2022-07-19 20:32:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11923 states, 9802 states have (on average 1.3549275658028974) internal successors, (13281), 9962 states have internal predecessors, (13281), 1133 states have call successors, (1133), 788 states have call predecessors, (1133), 986 states have return successors, (1834), 1194 states have call predecessors, (1834), 1130 states have call successors, (1834) [2022-07-19 20:32:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11923 states to 11923 states and 16248 transitions. [2022-07-19 20:32:41,971 INFO L78 Accepts]: Start accepts. Automaton has 11923 states and 16248 transitions. Word has length 84 [2022-07-19 20:32:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:41,972 INFO L495 AbstractCegarLoop]: Abstraction has 11923 states and 16248 transitions. [2022-07-19 20:32:41,972 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) [2022-07-19 20:32:41,972 INFO L276 IsEmpty]: Start isEmpty. Operand 11923 states and 16248 transitions. [2022-07-19 20:32:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 20:32:41,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:41,979 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] [2022-07-19 20:32:41,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:32:41,980 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash -197625515, now seen corresponding path program 1 times [2022-07-19 20:32:41,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:41,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235672816] [2022-07-19 20:32:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:41,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 20:32:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 20:32:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:42,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235672816] [2022-07-19 20:32:42,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235672816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:42,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:42,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:32:42,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419898253] [2022-07-19 20:32:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:42,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:32:42,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:32:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:32:42,059 INFO L87 Difference]: Start difference. First operand 11923 states and 16248 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) [2022-07-19 20:32:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:43,452 INFO L93 Difference]: Finished difference Result 15926 states and 21088 transitions. [2022-07-19 20:32:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 20:32:43,455 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 [2022-07-19 20:32:43,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:43,492 INFO L225 Difference]: With dead ends: 15926 [2022-07-19 20:32:43,493 INFO L226 Difference]: Without dead ends: 11333 [2022-07-19 20:32:43,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-19 20:32:43,511 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1528 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:43,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 1405 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11333 states. [2022-07-19 20:32:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11333 to 10999. [2022-07-19 20:32:44,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10999 states, 9091 states have (on average 1.3617863821361786) internal successors, (12380), 9233 states have internal predecessors, (12380), 1034 states have call successors, (1034), 703 states have call predecessors, (1034), 872 states have return successors, (1612), 1084 states have call predecessors, (1612), 1031 states have call successors, (1612) [2022-07-19 20:32:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10999 states to 10999 states and 15026 transitions. [2022-07-19 20:32:44,272 INFO L78 Accepts]: Start accepts. Automaton has 10999 states and 15026 transitions. Word has length 93 [2022-07-19 20:32:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:44,272 INFO L495 AbstractCegarLoop]: Abstraction has 10999 states and 15026 transitions. [2022-07-19 20:32:44,272 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) [2022-07-19 20:32:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10999 states and 15026 transitions. [2022-07-19 20:32:44,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 20:32:44,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:44,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:44,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:32:44,289 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:44,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:44,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1663679213, now seen corresponding path program 1 times [2022-07-19 20:32:44,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:44,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659722873] [2022-07-19 20:32:44,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:44,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:44,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:32:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 20:32:44,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:44,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659722873] [2022-07-19 20:32:44,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659722873] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:44,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102915113] [2022-07-19 20:32:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:44,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:44,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:44,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:44,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 20:32:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:44,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:32:44,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:44,536 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 20:32:44,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:44,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102915113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:44,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:44,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 20:32:44,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735220811] [2022-07-19 20:32:44,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:44,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:32:44,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:32:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:44,538 INFO L87 Difference]: Start difference. First operand 10999 states and 15026 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:45,310 INFO L93 Difference]: Finished difference Result 24036 states and 34570 transitions. [2022-07-19 20:32:45,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:32:45,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-07-19 20:32:45,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:45,359 INFO L225 Difference]: With dead ends: 24036 [2022-07-19 20:32:45,359 INFO L226 Difference]: Without dead ends: 17381 [2022-07-19 20:32:45,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:45,386 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 311 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:45,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 581 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17381 states. [2022-07-19 20:32:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17381 to 17273. [2022-07-19 20:32:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17273 states, 14503 states have (on average 1.3946080121354203) internal successors, (20226), 14720 states have internal predecessors, (20226), 1540 states have call successors, (1540), 1011 states have call predecessors, (1540), 1228 states have return successors, (2455), 1563 states have call predecessors, (2455), 1537 states have call successors, (2455) [2022-07-19 20:32:46,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17273 states to 17273 states and 24221 transitions. [2022-07-19 20:32:46,364 INFO L78 Accepts]: Start accepts. Automaton has 17273 states and 24221 transitions. Word has length 129 [2022-07-19 20:32:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:46,364 INFO L495 AbstractCegarLoop]: Abstraction has 17273 states and 24221 transitions. [2022-07-19 20:32:46,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:32:46,365 INFO L276 IsEmpty]: Start isEmpty. Operand 17273 states and 24221 transitions. [2022-07-19 20:32:46,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 20:32:46,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:46,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:46,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:46,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-19 20:32:46,593 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash 389348365, now seen corresponding path program 1 times [2022-07-19 20:32:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:46,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615744925] [2022-07-19 20:32:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:46,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:46,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:32:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:32:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:32:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:32:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:32:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:32:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 20:32:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:46,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615744925] [2022-07-19 20:32:46,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615744925] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:46,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728918734] [2022-07-19 20:32:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:46,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:46,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:46,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 20:32:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:46,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:32:46,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 20:32:46,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:46,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728918734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:46,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:46,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:32:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048489909] [2022-07-19 20:32:46,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:46,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:32:46,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:32:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:46,811 INFO L87 Difference]: Start difference. First operand 17273 states and 24221 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 20:32:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:48,419 INFO L93 Difference]: Finished difference Result 42508 states and 61581 transitions. [2022-07-19 20:32:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:32:48,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 129 [2022-07-19 20:32:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:48,468 INFO L225 Difference]: With dead ends: 42508 [2022-07-19 20:32:48,468 INFO L226 Difference]: Without dead ends: 19542 [2022-07-19 20:32:48,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:32:48,509 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 192 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:48,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 918 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:48,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19542 states. [2022-07-19 20:32:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19542 to 19542. [2022-07-19 20:32:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19542 states, 16465 states have (on average 1.3992104464014576) internal successors, (23038), 16698 states have internal predecessors, (23038), 1723 states have call successors, (1723), 1119 states have call predecessors, (1723), 1352 states have return successors, (2769), 1746 states have call predecessors, (2769), 1720 states have call successors, (2769) [2022-07-19 20:32:49,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19542 states to 19542 states and 27530 transitions. [2022-07-19 20:32:49,607 INFO L78 Accepts]: Start accepts. Automaton has 19542 states and 27530 transitions. Word has length 129 [2022-07-19 20:32:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:49,608 INFO L495 AbstractCegarLoop]: Abstraction has 19542 states and 27530 transitions. [2022-07-19 20:32:49,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 20:32:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 19542 states and 27530 transitions. [2022-07-19 20:32:49,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 20:32:49,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:49,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:49,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 20:32:49,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:49,829 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:49,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:49,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1234059877, now seen corresponding path program 1 times [2022-07-19 20:32:49,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:49,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559991333] [2022-07-19 20:32:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:49,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:32:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 20:32:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:32:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:32:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 20:32:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:32:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 20:32:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:49,934 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 20:32:49,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559991333] [2022-07-19 20:32:49,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559991333] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:49,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905713424] [2022-07-19 20:32:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:49,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:49,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:49,936 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:49,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 20:32:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:50,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 20:32:50,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 20:32:50,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:32:50,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905713424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:50,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:32:50,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-19 20:32:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068775606] [2022-07-19 20:32:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:50,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:50,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:50,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:32:50,178 INFO L87 Difference]: Start difference. First operand 19542 states and 27530 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:32:50,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:50,918 INFO L93 Difference]: Finished difference Result 21708 states and 30153 transitions. [2022-07-19 20:32:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-19 20:32:50,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:50,965 INFO L225 Difference]: With dead ends: 21708 [2022-07-19 20:32:50,965 INFO L226 Difference]: Without dead ends: 17403 [2022-07-19 20:32:50,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:32:50,982 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 34 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:50,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1780 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:32:50,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17403 states. [2022-07-19 20:32:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17403 to 17278. [2022-07-19 20:32:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17278 states, 14778 states have (on average 1.4199485722019218) internal successors, (20984), 14960 states have internal predecessors, (20984), 1447 states have call successors, (1447), 885 states have call predecessors, (1447), 1051 states have return successors, (2376), 1448 states have call predecessors, (2376), 1444 states have call successors, (2376) [2022-07-19 20:32:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17278 states to 17278 states and 24807 transitions. [2022-07-19 20:32:52,158 INFO L78 Accepts]: Start accepts. Automaton has 17278 states and 24807 transitions. Word has length 145 [2022-07-19 20:32:52,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:52,158 INFO L495 AbstractCegarLoop]: Abstraction has 17278 states and 24807 transitions. [2022-07-19 20:32:52,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:32:52,158 INFO L276 IsEmpty]: Start isEmpty. Operand 17278 states and 24807 transitions. [2022-07-19 20:32:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 20:32:52,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:52,176 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:52,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 20:32:52,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-19 20:32:52,376 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:52,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:52,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1525119333, now seen corresponding path program 1 times [2022-07-19 20:32:52,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:52,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729468287] [2022-07-19 20:32:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 20:32:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 20:32:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 20:32:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 20:32:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:32:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 20:32:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 20:32:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 20:32:52,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:52,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729468287] [2022-07-19 20:32:52,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729468287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:52,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:52,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:32:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997707636] [2022-07-19 20:32:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:52,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:32:52,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:52,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:32:52,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:32:52,447 INFO L87 Difference]: Start difference. First operand 17278 states and 24807 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:32:53,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:53,568 INFO L93 Difference]: Finished difference Result 17343 states and 24875 transitions. [2022-07-19 20:32:53,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:32:53,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-19 20:32:53,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:53,617 INFO L225 Difference]: With dead ends: 17343 [2022-07-19 20:32:53,617 INFO L226 Difference]: Without dead ends: 16900 [2022-07-19 20:32:53,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:32:53,626 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 522 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:53,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 787 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:32:53,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16900 states. [2022-07-19 20:32:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16900 to 16838. [2022-07-19 20:32:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16838 states, 14434 states have (on average 1.4258001939864209) internal successors, (20580), 14613 states have internal predecessors, (20580), 1401 states have call successors, (1401), 845 states have call predecessors, (1401), 1001 states have return successors, (2312), 1395 states have call predecessors, (2312), 1398 states have call successors, (2312) [2022-07-19 20:32:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16838 states to 16838 states and 24293 transitions. [2022-07-19 20:32:54,429 INFO L78 Accepts]: Start accepts. Automaton has 16838 states and 24293 transitions. Word has length 147 [2022-07-19 20:32:54,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:54,429 INFO L495 AbstractCegarLoop]: Abstraction has 16838 states and 24293 transitions. [2022-07-19 20:32:54,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 20:32:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 16838 states and 24293 transitions. [2022-07-19 20:32:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 20:32:54,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:54,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:54,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 20:32:54,446 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:54,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1268854173, now seen corresponding path program 1 times [2022-07-19 20:32:54,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:54,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493609785] [2022-07-19 20:32:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:54,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:32:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:32:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 20:32:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:32:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 20:32:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 20:32:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:32:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:54,511 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 20:32:54,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:54,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493609785] [2022-07-19 20:32:54,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493609785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:32:54,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:32:54,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:32:54,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951191535] [2022-07-19 20:32:54,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:32:54,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:32:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:54,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:32:54,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:32:54,513 INFO L87 Difference]: Start difference. First operand 16838 states and 24293 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:32:55,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:55,883 INFO L93 Difference]: Finished difference Result 18315 states and 26092 transitions. [2022-07-19 20:32:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 20:32:55,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-19 20:32:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:55,931 INFO L225 Difference]: With dead ends: 18315 [2022-07-19 20:32:55,931 INFO L226 Difference]: Without dead ends: 16939 [2022-07-19 20:32:55,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:32:55,942 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 453 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:55,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1110 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:32:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16939 states. [2022-07-19 20:32:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16939 to 16747. [2022-07-19 20:32:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16747 states, 14365 states have (on average 1.4267316394013227) internal successors, (20495), 14545 states have internal predecessors, (20495), 1392 states have call successors, (1392), 840 states have call predecessors, (1392), 988 states have return successors, (2296), 1377 states have call predecessors, (2296), 1389 states have call successors, (2296) [2022-07-19 20:32:56,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16747 states to 16747 states and 24183 transitions. [2022-07-19 20:32:56,796 INFO L78 Accepts]: Start accepts. Automaton has 16747 states and 24183 transitions. Word has length 159 [2022-07-19 20:32:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:56,796 INFO L495 AbstractCegarLoop]: Abstraction has 16747 states and 24183 transitions. [2022-07-19 20:32:56,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 20:32:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 16747 states and 24183 transitions. [2022-07-19 20:32:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-19 20:32:56,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:56,814 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:56,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 20:32:56,814 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:32:56,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:32:56,815 INFO L85 PathProgramCache]: Analyzing trace with hash 35384604, now seen corresponding path program 1 times [2022-07-19 20:32:56,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:32:56,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468836014] [2022-07-19 20:32:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:56,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:32:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:32:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:32:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:32:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:32:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:32:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:32:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:32:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 20:32:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 20:32:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:32:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:32:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 20:32:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 20:32:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:32:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 20:32:56,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:32:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468836014] [2022-07-19 20:32:56,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468836014] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:32:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917643014] [2022-07-19 20:32:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:32:56,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:32:56,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:32:56,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:32:56,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 20:32:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:32:57,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 20:32:57,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:32:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 20:32:57,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 20:32:57,387 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 20:32:57,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917643014] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 20:32:57,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 20:32:57,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-19 20:32:57,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129683462] [2022-07-19 20:32:57,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 20:32:57,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 20:32:57,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:32:57,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 20:32:57,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:32:57,389 INFO L87 Difference]: Start difference. First operand 16747 states and 24183 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:32:58,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:32:58,919 INFO L93 Difference]: Finished difference Result 18719 states and 26636 transitions. [2022-07-19 20:32:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 20:32:58,920 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-19 20:32:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:32:58,971 INFO L225 Difference]: With dead ends: 18719 [2022-07-19 20:32:58,971 INFO L226 Difference]: Without dead ends: 17287 [2022-07-19 20:32:58,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-19 20:32:58,982 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1253 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:32:58,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 1324 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:32:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17287 states. [2022-07-19 20:32:59,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17287 to 17137. [2022-07-19 20:32:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17137 states, 14643 states have (on average 1.4203373625623166) internal successors, (20798), 14831 states have internal predecessors, (20798), 1446 states have call successors, (1446), 890 states have call predecessors, (1446), 1046 states have return successors, (2410), 1431 states have call predecessors, (2410), 1443 states have call successors, (2410) [2022-07-19 20:32:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17137 states to 17137 states and 24654 transitions. [2022-07-19 20:32:59,859 INFO L78 Accepts]: Start accepts. Automaton has 17137 states and 24654 transitions. Word has length 162 [2022-07-19 20:32:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:32:59,860 INFO L495 AbstractCegarLoop]: Abstraction has 17137 states and 24654 transitions. [2022-07-19 20:32:59,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-19 20:32:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 17137 states and 24654 transitions. [2022-07-19 20:32:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 20:32:59,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:32:59,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:32:59,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 20:33:00,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 20:33:00,082 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1043385329, now seen corresponding path program 1 times [2022-07-19 20:33:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:00,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536495195] [2022-07-19 20:33:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:00,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:33:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 20:33:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 20:33:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 20:33:00,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:00,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536495195] [2022-07-19 20:33:00,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536495195] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702441257] [2022-07-19 20:33:00,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:00,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:00,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:00,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:00,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 20:33:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:00,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:33:00,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 20:33:00,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:00,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702441257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:00,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:00,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 20:33:00,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765243128] [2022-07-19 20:33:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:00,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:00,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:00,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:00,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:00,435 INFO L87 Difference]: Start difference. First operand 17137 states and 24654 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:33:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:01,710 INFO L93 Difference]: Finished difference Result 47078 states and 69363 transitions. [2022-07-19 20:33:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:01,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-07-19 20:33:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:01,793 INFO L225 Difference]: With dead ends: 47078 [2022-07-19 20:33:01,794 INFO L226 Difference]: Without dead ends: 31880 [2022-07-19 20:33:01,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:01,835 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 264 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:01,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 579 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31880 states. [2022-07-19 20:33:03,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31880 to 31632. [2022-07-19 20:33:03,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31632 states, 27121 states have (on average 1.4300726374396224) internal successors, (38785), 27475 states have internal predecessors, (38785), 2627 states have call successors, (2627), 1614 states have call predecessors, (2627), 1882 states have return successors, (4383), 2558 states have call predecessors, (4383), 2624 states have call successors, (4383) [2022-07-19 20:33:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31632 states to 31632 states and 45795 transitions. [2022-07-19 20:33:03,887 INFO L78 Accepts]: Start accepts. Automaton has 31632 states and 45795 transitions. Word has length 167 [2022-07-19 20:33:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:03,887 INFO L495 AbstractCegarLoop]: Abstraction has 31632 states and 45795 transitions. [2022-07-19 20:33:03,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:33:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 31632 states and 45795 transitions. [2022-07-19 20:33:03,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 20:33:03,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:03,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:03,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 20:33:04,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:04,149 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:04,149 INFO L85 PathProgramCache]: Analyzing trace with hash -932684503, now seen corresponding path program 1 times [2022-07-19 20:33:04,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:04,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175300041] [2022-07-19 20:33:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:04,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:04,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 20:33:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 20:33:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 20:33:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,258 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 20:33:04,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175300041] [2022-07-19 20:33:04,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175300041] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:04,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30685964] [2022-07-19 20:33:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:04,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:04,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:04,261 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:04,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 20:33:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:04,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:33:04,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 20:33:04,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:04,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30685964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:04,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:04,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 20:33:04,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733461092] [2022-07-19 20:33:04,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:04,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:04,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:04,507 INFO L87 Difference]: Start difference. First operand 31632 states and 45795 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:33:06,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:06,508 INFO L93 Difference]: Finished difference Result 63101 states and 92719 transitions. [2022-07-19 20:33:06,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:06,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-07-19 20:33:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:06,619 INFO L225 Difference]: With dead ends: 63101 [2022-07-19 20:33:06,619 INFO L226 Difference]: Without dead ends: 45005 [2022-07-19 20:33:06,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:06,662 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 265 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:06,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 600 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45005 states. [2022-07-19 20:33:08,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45005 to 44649. [2022-07-19 20:33:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44649 states, 38388 states have (on average 1.4363863707408566) internal successors, (55140), 38874 states have internal predecessors, (55140), 3646 states have call successors, (3646), 2249 states have call predecessors, (3646), 2613 states have return successors, (5969), 3541 states have call predecessors, (5969), 3643 states have call successors, (5969) [2022-07-19 20:33:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44649 states to 44649 states and 64755 transitions. [2022-07-19 20:33:09,027 INFO L78 Accepts]: Start accepts. Automaton has 44649 states and 64755 transitions. Word has length 167 [2022-07-19 20:33:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:09,027 INFO L495 AbstractCegarLoop]: Abstraction has 44649 states and 64755 transitions. [2022-07-19 20:33:09,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 20:33:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 44649 states and 64755 transitions. [2022-07-19 20:33:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:33:09,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:09,067 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:09,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 20:33:09,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:09,268 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash 99767870, now seen corresponding path program 1 times [2022-07-19 20:33:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089400222] [2022-07-19 20:33:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:09,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 20:33:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:33:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:33:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 20:33:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 20:33:09,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:33:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:33:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 20:33:09,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:33:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:33:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-19 20:33:09,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089400222] [2022-07-19 20:33:09,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089400222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516512593] [2022-07-19 20:33:09,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:09,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:09,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:09,339 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:09,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 20:33:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:09,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:33:09,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:09,549 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 20:33:09,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:09,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516512593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:09,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:09,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:33:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634824913] [2022-07-19 20:33:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:09,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:09,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:09,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:09,551 INFO L87 Difference]: Start difference. First operand 44649 states and 64755 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 20:33:11,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:11,700 INFO L93 Difference]: Finished difference Result 46411 states and 66884 transitions. [2022-07-19 20:33:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:11,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 179 [2022-07-19 20:33:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:11,802 INFO L225 Difference]: With dead ends: 46411 [2022-07-19 20:33:11,802 INFO L226 Difference]: Without dead ends: 44656 [2022-07-19 20:33:11,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:11,819 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 33 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:11,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 738 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44656 states. [2022-07-19 20:33:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44656 to 44649. [2022-07-19 20:33:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44649 states, 38388 states have (on average 1.4362300718974679) internal successors, (55134), 38874 states have internal predecessors, (55134), 3646 states have call successors, (3646), 2249 states have call predecessors, (3646), 2613 states have return successors, (5969), 3541 states have call predecessors, (5969), 3643 states have call successors, (5969) [2022-07-19 20:33:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44649 states to 44649 states and 64749 transitions. [2022-07-19 20:33:14,235 INFO L78 Accepts]: Start accepts. Automaton has 44649 states and 64749 transitions. Word has length 179 [2022-07-19 20:33:14,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:14,236 INFO L495 AbstractCegarLoop]: Abstraction has 44649 states and 64749 transitions. [2022-07-19 20:33:14,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-19 20:33:14,236 INFO L276 IsEmpty]: Start isEmpty. Operand 44649 states and 64749 transitions. [2022-07-19 20:33:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-19 20:33:14,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:14,275 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:14,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 20:33:14,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-19 20:33:14,476 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1939442957, now seen corresponding path program 1 times [2022-07-19 20:33:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:14,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390384591] [2022-07-19 20:33:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:14,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 20:33:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 20:33:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 20:33:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 20:33:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:33:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 20:33:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 20:33:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 20:33:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:33:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:33:14,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 20:33:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 20:33:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 20:33:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-19 20:33:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:14,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390384591] [2022-07-19 20:33:14,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390384591] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:14,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7478320] [2022-07-19 20:33:14,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:14,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:14,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:14,545 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:14,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 20:33:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:14,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 20:33:14,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-19 20:33:14,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:14,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7478320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:14,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:14,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-19 20:33:14,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966394355] [2022-07-19 20:33:14,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:14,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:33:14,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:33:14,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:33:14,673 INFO L87 Difference]: Start difference. First operand 44649 states and 64749 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 20:33:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:17,121 INFO L93 Difference]: Finished difference Result 46476 states and 66946 transitions. [2022-07-19 20:33:17,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:33:17,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 179 [2022-07-19 20:33:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:17,247 INFO L225 Difference]: With dead ends: 46476 [2022-07-19 20:33:17,247 INFO L226 Difference]: Without dead ends: 44361 [2022-07-19 20:33:17,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-19 20:33:17,348 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 457 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:17,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 726 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:33:17,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44361 states. [2022-07-19 20:33:19,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44361 to 44319. [2022-07-19 20:33:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44319 states, 38135 states have (on average 1.4376294742362659) internal successors, (54824), 38614 states have internal predecessors, (54824), 3611 states have call successors, (3611), 2218 states have call predecessors, (3611), 2571 states have return successors, (5895), 3502 states have call predecessors, (5895), 3608 states have call successors, (5895) [2022-07-19 20:33:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44319 states to 44319 states and 64330 transitions. [2022-07-19 20:33:19,825 INFO L78 Accepts]: Start accepts. Automaton has 44319 states and 64330 transitions. Word has length 179 [2022-07-19 20:33:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:33:19,825 INFO L495 AbstractCegarLoop]: Abstraction has 44319 states and 64330 transitions. [2022-07-19 20:33:19,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 20:33:19,825 INFO L276 IsEmpty]: Start isEmpty. Operand 44319 states and 64330 transitions. [2022-07-19 20:33:19,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 20:33:19,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:33:19,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:33:19,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 20:33:20,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:20,073 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:33:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:33:20,073 INFO L85 PathProgramCache]: Analyzing trace with hash -665339890, now seen corresponding path program 1 times [2022-07-19 20:33:20,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:33:20,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692774979] [2022-07-19 20:33:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:20,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:33:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:33:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 20:33:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 20:33:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 20:33:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:33:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 20:33:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 20:33:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 20:33:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:33:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 20:33:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,175 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-19 20:33:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:33:20,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692774979] [2022-07-19 20:33:20,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692774979] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:33:20,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183104393] [2022-07-19 20:33:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:33:20,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:33:20,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:33:20,178 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:33:20,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 20:33:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:33:20,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:33:20,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:33:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:33:20,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:33:20,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183104393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:33:20,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:33:20,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 20:33:20,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981378170] [2022-07-19 20:33:20,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:33:20,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:33:20,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:33:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:33:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:20,405 INFO L87 Difference]: Start difference. First operand 44319 states and 64330 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 20:33:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:33:23,062 INFO L93 Difference]: Finished difference Result 83681 states and 121879 transitions. [2022-07-19 20:33:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:33:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 185 [2022-07-19 20:33:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:33:23,164 INFO L225 Difference]: With dead ends: 83681 [2022-07-19 20:33:23,164 INFO L226 Difference]: Without dead ends: 40972 [2022-07-19 20:33:23,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:33:23,232 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 287 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:33:23,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 402 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:33:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40972 states.