./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.08.cil-2.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 dfe43dac9acec5d21450031b4b25696c02a17019cbc94a74a969e06371e0741b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:07:03,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:07:03,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:07:03,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:07:03,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:07:03,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:07:03,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:07:03,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:07:03,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:07:03,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:07:03,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:07:03,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:07:03,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:07:03,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:07:03,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:07:03,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:07:03,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:07:03,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:07:03,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:07:03,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:07:03,881 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:07:03,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:07:03,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:07:03,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:07:03,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:07:03,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:07:03,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:07:03,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:07:03,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:07:03,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:07:03,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:07:03,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:07:03,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:07:03,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:07:03,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:07:03,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:07:03,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:07:03,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:07:03,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:07:03,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:07:03,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:07:03,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:07:03,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:07:03,915 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:07:03,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:07:03,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:07:03,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:07:03,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:07:03,917 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:07:03,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:07:03,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:07:03,918 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:07:03,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:07:03,919 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:07:03,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:07:03,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:07:03,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:07:03,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:07:03,920 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:07:03,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:07:03,920 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:07:03,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:07:03,921 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:07:03,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:07:03,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:07:03,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:07:03,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:07:03,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:07:03,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:07:03,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:07:03,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:07:03,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:07:03,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:07:03,923 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:07:03,923 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:07:03,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:07:03,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe43dac9acec5d21450031b4b25696c02a17019cbc94a74a969e06371e0741b [2022-07-21 08:07:04,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:07:04,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:07:04,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:07:04,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:07:04,324 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:07:04,326 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2022-07-21 08:07:04,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483f74921/4b972b6e3e4142988fd675615fae89d5/FLAG709ecfcd0 [2022-07-21 08:07:04,917 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:07:04,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2022-07-21 08:07:04,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483f74921/4b972b6e3e4142988fd675615fae89d5/FLAG709ecfcd0 [2022-07-21 08:07:05,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483f74921/4b972b6e3e4142988fd675615fae89d5 [2022-07-21 08:07:05,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:07:05,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:07:05,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:07:05,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:07:05,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:07:05,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7c9127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05, skipping insertion in model container [2022-07-21 08:07:05,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:07:05,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:07:05,443 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.08.cil-2.c[914,927] [2022-07-21 08:07:05,545 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.08.cil-2.c[7115,7128] [2022-07-21 08:07:05,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:07:05,668 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:07:05,687 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.08.cil-2.c[914,927] [2022-07-21 08:07:05,709 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.08.cil-2.c[7115,7128] [2022-07-21 08:07:05,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:07:05,776 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:07:05,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05 WrapperNode [2022-07-21 08:07:05,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:07:05,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:07:05,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:07:05,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:07:05,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,871 INFO L137 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 813 [2022-07-21 08:07:05,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:07:05,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:07:05,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:07:05,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:07:05,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:07:05,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:07:05,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:07:05,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:07:05,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (1/1) ... [2022-07-21 08:07:05,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:07:05,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:05,997 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) [2022-07-21 08:07:06,020 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 [2022-07-21 08:07:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:07:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:07:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:07:06,039 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:07:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:07:06,041 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:07:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:07:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:07:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:07:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:07:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:07:06,042 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:07:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:07:06,043 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:07:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:07:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:07:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:07:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:07:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:07:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:07:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:07:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:07:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:07:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:07:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:07:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:07:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:07:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:07:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:07:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:07:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:07:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:07:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-21 08:07:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-21 08:07:06,156 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:07:06,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:07:06,937 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:07:06,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:07:06,953 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-21 08:07:06,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:06 BoogieIcfgContainer [2022-07-21 08:07:06,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:07:06,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:07:06,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:07:06,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:07:06,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:07:05" (1/3) ... [2022-07-21 08:07:06,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e497c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:06, skipping insertion in model container [2022-07-21 08:07:06,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:05" (2/3) ... [2022-07-21 08:07:06,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e497c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:06, skipping insertion in model container [2022-07-21 08:07:06,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:06" (3/3) ... [2022-07-21 08:07:06,966 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-2.c [2022-07-21 08:07:06,978 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:07:06,979 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:07:07,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:07:07,058 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@11cee496, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71e22fe6 [2022-07-21 08:07:07,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:07:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 335 states have (on average 1.626865671641791) internal successors, (545), 343 states have internal predecessors, (545), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-21 08:07:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:07,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:07,075 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] [2022-07-21 08:07:07,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2101552932, now seen corresponding path program 1 times [2022-07-21 08:07:07,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:07,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131766716] [2022-07-21 08:07:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:07,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:07,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131766716] [2022-07-21 08:07:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131766716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:07,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:07,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:07,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388120118] [2022-07-21 08:07:07,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:07,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:07,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:07,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:07,502 INFO L87 Difference]: Start difference. First operand has 391 states, 335 states have (on average 1.626865671641791) internal successors, (545), 343 states have internal predecessors, (545), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) 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) [2022-07-21 08:07:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:08,605 INFO L93 Difference]: Finished difference Result 892 states and 1408 transitions. [2022-07-21 08:07:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:08,608 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 [2022-07-21 08:07:08,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:08,620 INFO L225 Difference]: With dead ends: 892 [2022-07-21 08:07:08,621 INFO L226 Difference]: Without dead ends: 515 [2022-07-21 08:07:08,626 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 [2022-07-21 08:07:08,629 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1227 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:08,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1694 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-21 08:07:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 476. [2022-07-21 08:07:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 403 states have (on average 1.5086848635235732) internal successors, (608), 410 states have internal predecessors, (608), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2022-07-21 08:07:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 707 transitions. [2022-07-21 08:07:08,703 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 707 transitions. Word has length 65 [2022-07-21 08:07:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:08,703 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 707 transitions. [2022-07-21 08:07:08,704 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) [2022-07-21 08:07:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 707 transitions. [2022-07-21 08:07:08,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:08,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:08,707 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] [2022-07-21 08:07:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:07:08,708 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1789628413, now seen corresponding path program 1 times [2022-07-21 08:07:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:08,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563634338] [2022-07-21 08:07:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:08,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:08,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563634338] [2022-07-21 08:07:08,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563634338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:08,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:08,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:08,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739673381] [2022-07-21 08:07:08,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:08,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:08,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:08,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:08,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:08,863 INFO L87 Difference]: Start difference. First operand 476 states and 707 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) [2022-07-21 08:07:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:09,907 INFO L93 Difference]: Finished difference Result 823 states and 1184 transitions. [2022-07-21 08:07:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:07:09,908 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 [2022-07-21 08:07:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:09,913 INFO L225 Difference]: With dead ends: 823 [2022-07-21 08:07:09,913 INFO L226 Difference]: Without dead ends: 646 [2022-07-21 08:07:09,914 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 [2022-07-21 08:07:09,916 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1155 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:09,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 2201 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:09,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-07-21 08:07:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 572. [2022-07-21 08:07:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 479 states have (on average 1.4864300626304803) internal successors, (712), 488 states have internal predecessors, (712), 60 states have call successors, (60), 29 states have call predecessors, (60), 31 states have return successors, (69), 58 states have call predecessors, (69), 56 states have call successors, (69) [2022-07-21 08:07:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 841 transitions. [2022-07-21 08:07:09,966 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 841 transitions. Word has length 65 [2022-07-21 08:07:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:09,967 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 841 transitions. [2022-07-21 08:07:09,967 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) [2022-07-21 08:07:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 841 transitions. [2022-07-21 08:07:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:09,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:09,971 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] [2022-07-21 08:07:09,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:07:09,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:09,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash 476752773, now seen corresponding path program 1 times [2022-07-21 08:07:09,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:09,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113968364] [2022-07-21 08:07:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:09,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:10,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:10,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113968364] [2022-07-21 08:07:10,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113968364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:10,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:10,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:10,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230803750] [2022-07-21 08:07:10,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:10,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:10,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:10,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:10,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:10,097 INFO L87 Difference]: Start difference. First operand 572 states and 841 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) [2022-07-21 08:07:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:11,072 INFO L93 Difference]: Finished difference Result 873 states and 1255 transitions. [2022-07-21 08:07:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:07:11,072 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 [2022-07-21 08:07:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:11,076 INFO L225 Difference]: With dead ends: 873 [2022-07-21 08:07:11,076 INFO L226 Difference]: Without dead ends: 606 [2022-07-21 08:07:11,077 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 [2022-07-21 08:07:11,078 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 731 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2266 SdHoareTripleChecker+Invalid, 1428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:11,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 2266 Invalid, 1428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:11,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-07-21 08:07:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 577. [2022-07-21 08:07:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 483 states have (on average 1.4782608695652173) internal successors, (714), 492 states have internal predecessors, (714), 60 states have call successors, (60), 29 states have call predecessors, (60), 32 states have return successors, (70), 59 states have call predecessors, (70), 56 states have call successors, (70) [2022-07-21 08:07:11,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 844 transitions. [2022-07-21 08:07:11,115 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 844 transitions. Word has length 65 [2022-07-21 08:07:11,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:11,116 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 844 transitions. [2022-07-21 08:07:11,116 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) [2022-07-21 08:07:11,116 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 844 transitions. [2022-07-21 08:07:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:11,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:11,119 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] [2022-07-21 08:07:11,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:07:11,119 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash -552606525, now seen corresponding path program 1 times [2022-07-21 08:07:11,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:11,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625741247] [2022-07-21 08:07:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:11,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:11,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:11,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625741247] [2022-07-21 08:07:11,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625741247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:11,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:11,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:11,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571461429] [2022-07-21 08:07:11,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:11,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:11,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:11,261 INFO L87 Difference]: Start difference. First operand 577 states and 844 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:07:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:13,086 INFO L93 Difference]: Finished difference Result 2239 states and 3116 transitions. [2022-07-21 08:07:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:07:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-21 08:07:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:13,099 INFO L225 Difference]: With dead ends: 2239 [2022-07-21 08:07:13,100 INFO L226 Difference]: Without dead ends: 1967 [2022-07-21 08:07:13,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 08:07:13,104 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 2513 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:13,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 2140 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:07:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-07-21 08:07:13,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1717. [2022-07-21 08:07:13,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1383 states have (on average 1.3702096890817064) internal successors, (1895), 1412 states have internal predecessors, (1895), 177 states have call successors, (177), 131 states have call predecessors, (177), 155 states have return successors, (256), 177 states have call predecessors, (256), 173 states have call successors, (256) [2022-07-21 08:07:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2328 transitions. [2022-07-21 08:07:13,227 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2328 transitions. Word has length 65 [2022-07-21 08:07:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:13,228 INFO L495 AbstractCegarLoop]: Abstraction has 1717 states and 2328 transitions. [2022-07-21 08:07:13,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:07:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2328 transitions. [2022-07-21 08:07:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:13,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:13,230 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] [2022-07-21 08:07:13,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:07:13,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:13,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:13,231 INFO L85 PathProgramCache]: Analyzing trace with hash 498842564, now seen corresponding path program 1 times [2022-07-21 08:07:13,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:13,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116586287] [2022-07-21 08:07:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:13,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:13,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:13,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116586287] [2022-07-21 08:07:13,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116586287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:13,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:13,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:13,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100876723] [2022-07-21 08:07:13,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:13,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:13,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:13,333 INFO L87 Difference]: Start difference. First operand 1717 states and 2328 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) [2022-07-21 08:07:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:14,333 INFO L93 Difference]: Finished difference Result 3318 states and 4452 transitions. [2022-07-21 08:07:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:07:14,334 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 [2022-07-21 08:07:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:14,343 INFO L225 Difference]: With dead ends: 3318 [2022-07-21 08:07:14,343 INFO L226 Difference]: Without dead ends: 1906 [2022-07-21 08:07:14,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:07:14,348 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 490 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:14,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 2523 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-07-21 08:07:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1762. [2022-07-21 08:07:14,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1419 states have (on average 1.354474982381959) internal successors, (1922), 1448 states have internal predecessors, (1922), 177 states have call successors, (177), 131 states have call predecessors, (177), 164 states have return successors, (268), 186 states have call predecessors, (268), 173 states have call successors, (268) [2022-07-21 08:07:14,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2367 transitions. [2022-07-21 08:07:14,445 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2367 transitions. Word has length 65 [2022-07-21 08:07:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:14,446 INFO L495 AbstractCegarLoop]: Abstraction has 1762 states and 2367 transitions. [2022-07-21 08:07:14,446 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) [2022-07-21 08:07:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2367 transitions. [2022-07-21 08:07:14,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:14,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:14,448 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] [2022-07-21 08:07:14,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:07:14,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:14,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:14,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1885045958, now seen corresponding path program 1 times [2022-07-21 08:07:14,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:14,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888781565] [2022-07-21 08:07:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:14,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:14,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:14,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:14,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888781565] [2022-07-21 08:07:14,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888781565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:14,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:14,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:14,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417525273] [2022-07-21 08:07:14,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:14,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:14,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:14,536 INFO L87 Difference]: Start difference. First operand 1762 states and 2367 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) [2022-07-21 08:07:15,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:15,491 INFO L93 Difference]: Finished difference Result 3197 states and 4206 transitions. [2022-07-21 08:07:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:07:15,492 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 [2022-07-21 08:07:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:15,500 INFO L225 Difference]: With dead ends: 3197 [2022-07-21 08:07:15,501 INFO L226 Difference]: Without dead ends: 1960 [2022-07-21 08:07:15,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:07:15,505 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1131 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:15,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1935 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:15,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-07-21 08:07:15,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1740. [2022-07-21 08:07:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1405 states have (on average 1.3508896797153025) internal successors, (1898), 1428 states have internal predecessors, (1898), 177 states have call successors, (177), 131 states have call predecessors, (177), 156 states have return successors, (252), 184 states have call predecessors, (252), 173 states have call successors, (252) [2022-07-21 08:07:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2327 transitions. [2022-07-21 08:07:15,592 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2327 transitions. Word has length 65 [2022-07-21 08:07:15,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:15,594 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2327 transitions. [2022-07-21 08:07:15,594 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) [2022-07-21 08:07:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2327 transitions. [2022-07-21 08:07:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:15,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:15,596 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] [2022-07-21 08:07:15,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:07:15,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:15,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1751032452, now seen corresponding path program 1 times [2022-07-21 08:07:15,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:15,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136957919] [2022-07-21 08:07:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:15,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:15,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:15,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136957919] [2022-07-21 08:07:15,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136957919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:15,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:15,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:15,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726978811] [2022-07-21 08:07:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:15,682 INFO L87 Difference]: Start difference. First operand 1740 states and 2327 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) [2022-07-21 08:07:16,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:16,153 INFO L93 Difference]: Finished difference Result 4815 states and 6306 transitions. [2022-07-21 08:07:16,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:07:16,155 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 [2022-07-21 08:07:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:16,172 INFO L225 Difference]: With dead ends: 4815 [2022-07-21 08:07:16,173 INFO L226 Difference]: Without dead ends: 3383 [2022-07-21 08:07:16,178 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 [2022-07-21 08:07:16,179 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 1650 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:16,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1121 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:16,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2022-07-21 08:07:16,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3111. [2022-07-21 08:07:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2471 states have (on average 1.301092675030352) internal successors, (3215), 2515 states have internal predecessors, (3215), 329 states have call successors, (329), 254 states have call predecessors, (329), 309 states have return successors, (524), 348 states have call predecessors, (524), 325 states have call successors, (524) [2022-07-21 08:07:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 4068 transitions. [2022-07-21 08:07:16,331 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 4068 transitions. Word has length 65 [2022-07-21 08:07:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:16,331 INFO L495 AbstractCegarLoop]: Abstraction has 3111 states and 4068 transitions. [2022-07-21 08:07:16,332 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) [2022-07-21 08:07:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 4068 transitions. [2022-07-21 08:07:16,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:07:16,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:16,337 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] [2022-07-21 08:07:16,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:07:16,337 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:16,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -869770994, now seen corresponding path program 1 times [2022-07-21 08:07:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:16,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426259383] [2022-07-21 08:07:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:16,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426259383] [2022-07-21 08:07:16,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426259383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:16,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:16,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:16,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195683503] [2022-07-21 08:07:16,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:16,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:16,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:16,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:16,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:16,413 INFO L87 Difference]: Start difference. First operand 3111 states and 4068 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) [2022-07-21 08:07:17,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:17,048 INFO L93 Difference]: Finished difference Result 8129 states and 10582 transitions. [2022-07-21 08:07:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:17,049 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 [2022-07-21 08:07:17,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:17,073 INFO L225 Difference]: With dead ends: 8129 [2022-07-21 08:07:17,074 INFO L226 Difference]: Without dead ends: 5305 [2022-07-21 08:07:17,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:17,083 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 934 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:17,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1377 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:07:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5305 states. [2022-07-21 08:07:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5305 to 4789. [2022-07-21 08:07:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4789 states, 3756 states have (on average 1.2819488817891374) internal successors, (4815), 3807 states have internal predecessors, (4815), 523 states have call successors, (523), 428 states have call predecessors, (523), 508 states have return successors, (845), 560 states have call predecessors, (845), 519 states have call successors, (845) [2022-07-21 08:07:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4789 states to 4789 states and 6183 transitions. [2022-07-21 08:07:17,331 INFO L78 Accepts]: Start accepts. Automaton has 4789 states and 6183 transitions. Word has length 66 [2022-07-21 08:07:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:17,331 INFO L495 AbstractCegarLoop]: Abstraction has 4789 states and 6183 transitions. [2022-07-21 08:07:17,332 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) [2022-07-21 08:07:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4789 states and 6183 transitions. [2022-07-21 08:07:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 08:07:17,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:17,334 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] [2022-07-21 08:07:17,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:07:17,334 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:17,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -79299166, now seen corresponding path program 1 times [2022-07-21 08:07:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081731330] [2022-07-21 08:07:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:17,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:17,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081731330] [2022-07-21 08:07:17,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081731330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:17,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:17,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:17,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398022718] [2022-07-21 08:07:17,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:17,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:17,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:17,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:17,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:17,400 INFO L87 Difference]: Start difference. First operand 4789 states and 6183 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) [2022-07-21 08:07:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:18,038 INFO L93 Difference]: Finished difference Result 6419 states and 8185 transitions. [2022-07-21 08:07:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:07:18,039 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 [2022-07-21 08:07:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:18,070 INFO L225 Difference]: With dead ends: 6419 [2022-07-21 08:07:18,070 INFO L226 Difference]: Without dead ends: 6416 [2022-07-21 08:07:18,074 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 [2022-07-21 08:07:18,076 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1639 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:18,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 1404 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:07:18,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6416 states. [2022-07-21 08:07:18,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6416 to 5843. [2022-07-21 08:07:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5843 states, 4559 states have (on average 1.2689186225049354) internal successors, (5785), 4619 states have internal predecessors, (5785), 649 states have call successors, (649), 542 states have call predecessors, (649), 633 states have return successors, (1038), 688 states have call predecessors, (1038), 646 states have call successors, (1038) [2022-07-21 08:07:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5843 states to 5843 states and 7472 transitions. [2022-07-21 08:07:18,399 INFO L78 Accepts]: Start accepts. Automaton has 5843 states and 7472 transitions. Word has length 73 [2022-07-21 08:07:18,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:18,400 INFO L495 AbstractCegarLoop]: Abstraction has 5843 states and 7472 transitions. [2022-07-21 08:07:18,401 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) [2022-07-21 08:07:18,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5843 states and 7472 transitions. [2022-07-21 08:07:18,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 08:07:18,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:18,404 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] [2022-07-21 08:07:18,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:07:18,405 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:18,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:18,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1835525111, now seen corresponding path program 1 times [2022-07-21 08:07:18,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:18,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487459163] [2022-07-21 08:07:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:18,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:18,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487459163] [2022-07-21 08:07:18,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487459163] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:07:18,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106254556] [2022-07-21 08:07:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:18,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:07:18,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:18,511 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) [2022-07-21 08:07:18,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:07:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:18,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:07:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:07:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:19,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:07:19,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:19,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106254556] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:07:19,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:07:19,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-21 08:07:19,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818110045] [2022-07-21 08:07:19,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:07:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:07:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:07:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:07:19,181 INFO L87 Difference]: Start difference. First operand 5843 states and 7472 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) [2022-07-21 08:07:21,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:21,196 INFO L93 Difference]: Finished difference Result 13489 states and 17000 transitions. [2022-07-21 08:07:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:07:21,196 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 [2022-07-21 08:07:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:21,253 INFO L225 Difference]: With dead ends: 13489 [2022-07-21 08:07:21,254 INFO L226 Difference]: Without dead ends: 13486 [2022-07-21 08:07:21,261 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 [2022-07-21 08:07:21,262 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 1523 mSDsluCounter, 2005 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 2232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:21,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 2742 Invalid, 2232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:07:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2022-07-21 08:07:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 11101. [2022-07-21 08:07:21,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11101 states, 8651 states have (on average 1.2592763842330366) internal successors, (10894), 8763 states have internal predecessors, (10894), 1215 states have call successors, (1215), 1032 states have call predecessors, (1215), 1233 states have return successors, (1977), 1312 states have call predecessors, (1977), 1212 states have call successors, (1977) [2022-07-21 08:07:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 14086 transitions. [2022-07-21 08:07:21,957 INFO L78 Accepts]: Start accepts. Automaton has 11101 states and 14086 transitions. Word has length 74 [2022-07-21 08:07:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:21,958 INFO L495 AbstractCegarLoop]: Abstraction has 11101 states and 14086 transitions. [2022-07-21 08:07:21,958 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) [2022-07-21 08:07:21,958 INFO L276 IsEmpty]: Start isEmpty. Operand 11101 states and 14086 transitions. [2022-07-21 08:07:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 08:07:21,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:21,961 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] [2022-07-21 08:07:21,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:07:22,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 08:07:22,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1541776738, now seen corresponding path program 2 times [2022-07-21 08:07:22,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:22,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383863074] [2022-07-21 08:07:22,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:22,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:22,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383863074] [2022-07-21 08:07:22,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383863074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:22,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:22,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499510466] [2022-07-21 08:07:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:22,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:22,248 INFO L87 Difference]: Start difference. First operand 11101 states and 14086 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) [2022-07-21 08:07:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:23,092 INFO L93 Difference]: Finished difference Result 17644 states and 22428 transitions. [2022-07-21 08:07:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:07:23,093 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 [2022-07-21 08:07:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:23,116 INFO L225 Difference]: With dead ends: 17644 [2022-07-21 08:07:23,116 INFO L226 Difference]: Without dead ends: 7706 [2022-07-21 08:07:23,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:07:23,137 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1000 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:23,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1509 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:07:23,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-07-21 08:07:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 7154. [2022-07-21 08:07:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7154 states, 5598 states have (on average 1.2386566630939622) internal successors, (6934), 5666 states have internal predecessors, (6934), 782 states have call successors, (782), 656 states have call predecessors, (782), 772 states have return successors, (1196), 838 states have call predecessors, (1196), 779 states have call successors, (1196) [2022-07-21 08:07:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7154 states to 7154 states and 8912 transitions. [2022-07-21 08:07:23,488 INFO L78 Accepts]: Start accepts. Automaton has 7154 states and 8912 transitions. Word has length 77 [2022-07-21 08:07:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:23,489 INFO L495 AbstractCegarLoop]: Abstraction has 7154 states and 8912 transitions. [2022-07-21 08:07:23,489 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) [2022-07-21 08:07:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7154 states and 8912 transitions. [2022-07-21 08:07:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 08:07:23,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:23,492 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] [2022-07-21 08:07:23,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:07:23,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash 68149481, now seen corresponding path program 1 times [2022-07-21 08:07:23,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:23,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364689876] [2022-07-21 08:07:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:23,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:07:23,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:23,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364689876] [2022-07-21 08:07:23,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364689876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:23,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:23,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193733103] [2022-07-21 08:07:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:23,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:23,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:23,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:23,580 INFO L87 Difference]: Start difference. First operand 7154 states and 8912 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) [2022-07-21 08:07:25,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:25,022 INFO L93 Difference]: Finished difference Result 21028 states and 26129 transitions. [2022-07-21 08:07:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:07:25,022 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 [2022-07-21 08:07:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:25,081 INFO L225 Difference]: With dead ends: 21028 [2022-07-21 08:07:25,081 INFO L226 Difference]: Without dead ends: 14185 [2022-07-21 08:07:25,105 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 [2022-07-21 08:07:25,106 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1475 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:25,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1794 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:25,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14185 states. [2022-07-21 08:07:25,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14185 to 13326. [2022-07-21 08:07:25,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13326 states, 10274 states have (on average 1.208974109402375) internal successors, (12421), 10448 states have internal predecessors, (12421), 1498 states have call successors, (1498), 1260 states have call predecessors, (1498), 1552 states have return successors, (2599), 1630 states have call predecessors, (2599), 1495 states have call successors, (2599) [2022-07-21 08:07:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13326 states to 13326 states and 16518 transitions. [2022-07-21 08:07:25,782 INFO L78 Accepts]: Start accepts. Automaton has 13326 states and 16518 transitions. Word has length 84 [2022-07-21 08:07:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:25,782 INFO L495 AbstractCegarLoop]: Abstraction has 13326 states and 16518 transitions. [2022-07-21 08:07:25,783 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) [2022-07-21 08:07:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13326 states and 16518 transitions. [2022-07-21 08:07:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 08:07:25,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:25,837 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] [2022-07-21 08:07:25,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:07:25,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:25,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1418215744, now seen corresponding path program 1 times [2022-07-21 08:07:25,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:25,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581299648] [2022-07-21 08:07:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:25,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:25,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:07:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:07:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:25,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581299648] [2022-07-21 08:07:25,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581299648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:25,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:25,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358502081] [2022-07-21 08:07:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:25,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:25,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:25,938 INFO L87 Difference]: Start difference. First operand 13326 states and 16518 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) [2022-07-21 08:07:27,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:27,713 INFO L93 Difference]: Finished difference Result 24200 states and 29837 transitions. [2022-07-21 08:07:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:07:27,714 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 [2022-07-21 08:07:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:27,765 INFO L225 Difference]: With dead ends: 24200 [2022-07-21 08:07:27,765 INFO L226 Difference]: Without dead ends: 11801 [2022-07-21 08:07:27,806 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 [2022-07-21 08:07:27,807 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 2042 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:27,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 2099 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:07:27,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11801 states. [2022-07-21 08:07:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11801 to 10901. [2022-07-21 08:07:28,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10901 states, 8440 states have (on average 1.2004739336492891) internal successors, (10132), 8581 states have internal predecessors, (10132), 1199 states have call successors, (1199), 1009 states have call predecessors, (1199), 1260 states have return successors, (1931), 1320 states have call predecessors, (1931), 1196 states have call successors, (1931) [2022-07-21 08:07:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10901 states to 10901 states and 13262 transitions. [2022-07-21 08:07:28,511 INFO L78 Accepts]: Start accepts. Automaton has 10901 states and 13262 transitions. Word has length 93 [2022-07-21 08:07:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:28,512 INFO L495 AbstractCegarLoop]: Abstraction has 10901 states and 13262 transitions. [2022-07-21 08:07:28,512 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) [2022-07-21 08:07:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10901 states and 13262 transitions. [2022-07-21 08:07:28,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:28,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:28,526 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] [2022-07-21 08:07:28,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:07:28,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:28,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:28,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1086528831, now seen corresponding path program 1 times [2022-07-21 08:07:28,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:28,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878435174] [2022-07-21 08:07:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:28,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:07:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:07:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:07:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 08:07:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 08:07:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 08:07:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878435174] [2022-07-21 08:07:28,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878435174] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:07:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059932959] [2022-07-21 08:07:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:28,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:07:28,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:28,652 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) [2022-07-21 08:07:28,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:07:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 08:07:28,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:07:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:07:28,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:07:28,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059932959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:28,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:07:28,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-21 08:07:28,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454884647] [2022-07-21 08:07:28,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:28,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:07:28,828 INFO L87 Difference]: Start difference. First operand 10901 states and 13262 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) [2022-07-21 08:07:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:29,157 INFO L93 Difference]: Finished difference Result 16049 states and 19482 transitions. [2022-07-21 08:07:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:29,157 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 [2022-07-21 08:07:29,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:29,179 INFO L225 Difference]: With dead ends: 16049 [2022-07-21 08:07:29,180 INFO L226 Difference]: Without dead ends: 5467 [2022-07-21 08:07:29,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:07:29,204 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 34 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2825 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 [2022-07-21 08:07:29,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2825 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:07:29,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5467 states. [2022-07-21 08:07:29,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5467 to 5025. [2022-07-21 08:07:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 4005 states have (on average 1.1980024968789014) internal successors, (4798), 4044 states have internal predecessors, (4798), 501 states have call successors, (501), 403 states have call predecessors, (501), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2022-07-21 08:07:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6070 transitions. [2022-07-21 08:07:29,458 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6070 transitions. Word has length 145 [2022-07-21 08:07:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:29,459 INFO L495 AbstractCegarLoop]: Abstraction has 5025 states and 6070 transitions. [2022-07-21 08:07:29,459 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) [2022-07-21 08:07:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6070 transitions. [2022-07-21 08:07:29,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:29,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:29,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:29,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:07:29,683 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,SelfDestructingSolverStorable13 [2022-07-21 08:07:29,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1051309190, now seen corresponding path program 1 times [2022-07-21 08:07:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746632907] [2022-07-21 08:07:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:29,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:29,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:29,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746632907] [2022-07-21 08:07:29,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746632907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:29,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:29,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:07:29,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673852457] [2022-07-21 08:07:29,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:29,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:07:29,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:29,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:07:29,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:07:29,786 INFO L87 Difference]: Start difference. First operand 5025 states and 6070 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:31,110 INFO L93 Difference]: Finished difference Result 5396 states and 6664 transitions. [2022-07-21 08:07:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:31,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-07-21 08:07:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:31,126 INFO L225 Difference]: With dead ends: 5396 [2022-07-21 08:07:31,126 INFO L226 Difference]: Without dead ends: 5123 [2022-07-21 08:07:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:31,130 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 841 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:31,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1088 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:07:31,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5123 states. [2022-07-21 08:07:31,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5123 to 5025. [2022-07-21 08:07:31,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 4005 states have (on average 1.1977528089887641) internal successors, (4797), 4044 states have internal predecessors, (4797), 501 states have call successors, (501), 403 states have call predecessors, (501), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2022-07-21 08:07:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6069 transitions. [2022-07-21 08:07:31,489 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6069 transitions. Word has length 135 [2022-07-21 08:07:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:31,490 INFO L495 AbstractCegarLoop]: Abstraction has 5025 states and 6069 transitions. [2022-07-21 08:07:31,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6069 transitions. [2022-07-21 08:07:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:31,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:31,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:31,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:07:31,499 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:31,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:31,499 INFO L85 PathProgramCache]: Analyzing trace with hash 999099708, now seen corresponding path program 1 times [2022-07-21 08:07:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:31,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285187705] [2022-07-21 08:07:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:31,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:31,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:31,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:31,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285187705] [2022-07-21 08:07:31,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285187705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:31,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:31,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:31,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529085586] [2022-07-21 08:07:31,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:31,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:31,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:31,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:31,612 INFO L87 Difference]: Start difference. First operand 5025 states and 6069 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-07-21 08:07:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:33,732 INFO L93 Difference]: Finished difference Result 5767 states and 7260 transitions. [2022-07-21 08:07:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:33,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:33,751 INFO L225 Difference]: With dead ends: 5767 [2022-07-21 08:07:33,752 INFO L226 Difference]: Without dead ends: 5499 [2022-07-21 08:07:33,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:33,757 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1326 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:33,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1351 Valid, 1530 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:07:33,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5499 states. [2022-07-21 08:07:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5499 to 5302. [2022-07-21 08:07:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5302 states, 4258 states have (on average 1.2209957726632221) internal successors, (5199), 4298 states have internal predecessors, (5199), 518 states have call successors, (518), 409 states have call predecessors, (518), 524 states have return successors, (791), 595 states have call predecessors, (791), 515 states have call successors, (791) [2022-07-21 08:07:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5302 states to 5302 states and 6508 transitions. [2022-07-21 08:07:34,167 INFO L78 Accepts]: Start accepts. Automaton has 5302 states and 6508 transitions. Word has length 135 [2022-07-21 08:07:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:34,167 INFO L495 AbstractCegarLoop]: Abstraction has 5302 states and 6508 transitions. [2022-07-21 08:07:34,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-07-21 08:07:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5302 states and 6508 transitions. [2022-07-21 08:07:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:34,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:34,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:34,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:07:34,177 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash -362902728, now seen corresponding path program 1 times [2022-07-21 08:07:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:34,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487446388] [2022-07-21 08:07:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:34,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:34,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487446388] [2022-07-21 08:07:34,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487446388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:34,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:34,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:34,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141485282] [2022-07-21 08:07:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:34,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:34,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:34,289 INFO L87 Difference]: Start difference. First operand 5302 states and 6508 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:36,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:36,830 INFO L93 Difference]: Finished difference Result 6430 states and 8318 transitions. [2022-07-21 08:07:36,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:36,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:36,847 INFO L225 Difference]: With dead ends: 6430 [2022-07-21 08:07:36,848 INFO L226 Difference]: Without dead ends: 5885 [2022-07-21 08:07:36,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:36,853 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1337 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 2526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:36,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 2522 Invalid, 2526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:07:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2022-07-21 08:07:37,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 5560. [2022-07-21 08:07:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 4492 states have (on average 1.2384238646482635) internal successors, (5563), 4533 states have internal predecessors, (5563), 535 states have call successors, (535), 415 states have call predecessors, (535), 531 states have return successors, (810), 613 states have call predecessors, (810), 532 states have call successors, (810) [2022-07-21 08:07:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 6908 transitions. [2022-07-21 08:07:37,225 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 6908 transitions. Word has length 135 [2022-07-21 08:07:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:37,226 INFO L495 AbstractCegarLoop]: Abstraction has 5560 states and 6908 transitions. [2022-07-21 08:07:37,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:37,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 6908 transitions. [2022-07-21 08:07:37,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:37,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:37,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:37,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:07:37,236 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1566029498, now seen corresponding path program 1 times [2022-07-21 08:07:37,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:37,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850171575] [2022-07-21 08:07:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:37,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:37,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:37,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:37,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850171575] [2022-07-21 08:07:37,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850171575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:37,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:37,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12312515] [2022-07-21 08:07:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:37,423 INFO L87 Difference]: Start difference. First operand 5560 states and 6908 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:39,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:39,998 INFO L93 Difference]: Finished difference Result 7407 states and 9866 transitions. [2022-07-21 08:07:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:40,025 INFO L225 Difference]: With dead ends: 7407 [2022-07-21 08:07:40,026 INFO L226 Difference]: Without dead ends: 6604 [2022-07-21 08:07:40,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:40,034 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1337 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 2512 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:40,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 2512 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:07:40,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2022-07-21 08:07:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 6077. [2022-07-21 08:07:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6077 states, 4961 states have (on average 1.2682926829268293) internal successors, (6292), 5004 states have internal predecessors, (6292), 569 states have call successors, (569), 427 states have call predecessors, (569), 545 states have return successors, (852), 649 states have call predecessors, (852), 566 states have call successors, (852) [2022-07-21 08:07:40,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6077 states to 6077 states and 7713 transitions. [2022-07-21 08:07:40,539 INFO L78 Accepts]: Start accepts. Automaton has 6077 states and 7713 transitions. Word has length 135 [2022-07-21 08:07:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:40,540 INFO L495 AbstractCegarLoop]: Abstraction has 6077 states and 7713 transitions. [2022-07-21 08:07:40,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6077 states and 7713 transitions. [2022-07-21 08:07:40,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:40,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:40,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:40,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:07:40,550 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash -727051528, now seen corresponding path program 1 times [2022-07-21 08:07:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:40,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416135716] [2022-07-21 08:07:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:40,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:40,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416135716] [2022-07-21 08:07:40,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416135716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:40,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:40,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:40,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169945594] [2022-07-21 08:07:40,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:40,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:40,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:40,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:40,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:40,675 INFO L87 Difference]: Start difference. First operand 6077 states and 7713 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:43,198 INFO L93 Difference]: Finished difference Result 9285 states and 12827 transitions. [2022-07-21 08:07:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:43,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:43,225 INFO L225 Difference]: With dead ends: 9285 [2022-07-21 08:07:43,226 INFO L226 Difference]: Without dead ends: 7965 [2022-07-21 08:07:43,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:43,233 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 1332 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:43,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 2504 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:07:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2022-07-21 08:07:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7117. [2022-07-21 08:07:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3141405588484336) internal successors, (7760), 5952 states have internal predecessors, (7760), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-21 08:07:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9339 transitions. [2022-07-21 08:07:43,646 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9339 transitions. Word has length 135 [2022-07-21 08:07:43,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:43,646 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9339 transitions. [2022-07-21 08:07:43,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:43,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9339 transitions. [2022-07-21 08:07:43,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:43,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:43,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:43,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:07:43,656 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash -255695178, now seen corresponding path program 1 times [2022-07-21 08:07:43,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:43,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572644747] [2022-07-21 08:07:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:43,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:43,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:43,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572644747] [2022-07-21 08:07:43,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572644747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:43,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:43,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809645998] [2022-07-21 08:07:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:43,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:43,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:43,750 INFO L87 Difference]: Start difference. First operand 7117 states and 9339 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:45,022 INFO L93 Difference]: Finished difference Result 10338 states and 14504 transitions. [2022-07-21 08:07:45,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:45,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:45,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:45,039 INFO L225 Difference]: With dead ends: 10338 [2022-07-21 08:07:45,039 INFO L226 Difference]: Without dead ends: 7978 [2022-07-21 08:07:45,044 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 [2022-07-21 08:07:45,044 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1194 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:45,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1298 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:45,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-07-21 08:07:45,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 7117. [2022-07-21 08:07:45,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3126164267569855) internal successors, (7751), 5952 states have internal predecessors, (7751), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-21 08:07:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9330 transitions. [2022-07-21 08:07:45,442 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9330 transitions. Word has length 135 [2022-07-21 08:07:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:45,442 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9330 transitions. [2022-07-21 08:07:45,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9330 transitions. [2022-07-21 08:07:45,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:45,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:45,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:45,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:07:45,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:45,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1903058120, now seen corresponding path program 1 times [2022-07-21 08:07:45,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:45,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406450873] [2022-07-21 08:07:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:45,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:45,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:45,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406450873] [2022-07-21 08:07:45,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406450873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:45,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:45,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:45,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57908731] [2022-07-21 08:07:45,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:45,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:45,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:45,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:45,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:45,548 INFO L87 Difference]: Start difference. First operand 7117 states and 9330 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:46,820 INFO L93 Difference]: Finished difference Result 10328 states and 14457 transitions. [2022-07-21 08:07:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:46,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:46,846 INFO L225 Difference]: With dead ends: 10328 [2022-07-21 08:07:46,846 INFO L226 Difference]: Without dead ends: 7968 [2022-07-21 08:07:46,856 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 [2022-07-21 08:07:46,857 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1192 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:46,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 1294 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:46,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-07-21 08:07:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7117. [2022-07-21 08:07:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3110922946655377) internal successors, (7742), 5952 states have internal predecessors, (7742), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-21 08:07:47,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9321 transitions. [2022-07-21 08:07:47,330 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9321 transitions. Word has length 135 [2022-07-21 08:07:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:47,331 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9321 transitions. [2022-07-21 08:07:47,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9321 transitions. [2022-07-21 08:07:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:47,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:47,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:47,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:07:47,344 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash 260558454, now seen corresponding path program 1 times [2022-07-21 08:07:47,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:47,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442277165] [2022-07-21 08:07:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442277165] [2022-07-21 08:07:47,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442277165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:47,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:47,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:47,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816095229] [2022-07-21 08:07:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:47,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:47,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:47,448 INFO L87 Difference]: Start difference. First operand 7117 states and 9321 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:48,683 INFO L93 Difference]: Finished difference Result 10318 states and 14410 transitions. [2022-07-21 08:07:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:48,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:48,752 INFO L225 Difference]: With dead ends: 10318 [2022-07-21 08:07:48,752 INFO L226 Difference]: Without dead ends: 7958 [2022-07-21 08:07:48,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:07:48,759 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1232 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:48,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1268 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:07:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2022-07-21 08:07:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 7117. [2022-07-21 08:07:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5905 states have (on average 1.3095681625740898) internal successors, (7733), 5952 states have internal predecessors, (7733), 637 states have call successors, (637), 451 states have call predecessors, (637), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-21 08:07:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 9312 transitions. [2022-07-21 08:07:49,217 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 9312 transitions. Word has length 135 [2022-07-21 08:07:49,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:49,217 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 9312 transitions. [2022-07-21 08:07:49,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 9312 transitions. [2022-07-21 08:07:49,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:49,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:49,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:49,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:07:49,227 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash -778026120, now seen corresponding path program 1 times [2022-07-21 08:07:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:49,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694814459] [2022-07-21 08:07:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:49,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:49,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694814459] [2022-07-21 08:07:49,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694814459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:49,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:49,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030429658] [2022-07-21 08:07:49,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:49,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:49,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:49,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:49,329 INFO L87 Difference]: Start difference. First operand 7117 states and 9312 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:51,793 INFO L93 Difference]: Finished difference Result 13021 states and 18591 transitions. [2022-07-21 08:07:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:51,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:51,819 INFO L225 Difference]: With dead ends: 13021 [2022-07-21 08:07:51,819 INFO L226 Difference]: Without dead ends: 10661 [2022-07-21 08:07:51,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:51,828 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 1310 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 2447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:51,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 2481 Invalid, 2447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:07:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10661 states. [2022-07-21 08:07:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10661 to 9229. [2022-07-21 08:07:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9229 states, 7825 states have (on average 1.3649840255591055) internal successors, (10681), 7880 states have internal predecessors, (10681), 773 states have call successors, (773), 499 states have call predecessors, (773), 629 states have return successors, (1140), 865 states have call predecessors, (1140), 770 states have call successors, (1140) [2022-07-21 08:07:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9229 states to 9229 states and 12594 transitions. [2022-07-21 08:07:52,455 INFO L78 Accepts]: Start accepts. Automaton has 9229 states and 12594 transitions. Word has length 135 [2022-07-21 08:07:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:52,455 INFO L495 AbstractCegarLoop]: Abstraction has 9229 states and 12594 transitions. [2022-07-21 08:07:52,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:52,456 INFO L276 IsEmpty]: Start isEmpty. Operand 9229 states and 12594 transitions. [2022-07-21 08:07:52,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:52,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:52,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:52,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:07:52,465 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1543775798, now seen corresponding path program 1 times [2022-07-21 08:07:52,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:52,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042576705] [2022-07-21 08:07:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:52,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:52,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:52,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042576705] [2022-07-21 08:07:52,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042576705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:52,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:52,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:52,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474270223] [2022-07-21 08:07:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:52,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:52,571 INFO L87 Difference]: Start difference. First operand 9229 states and 12594 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:55,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:55,908 INFO L93 Difference]: Finished difference Result 22491 states and 33369 transitions. [2022-07-21 08:07:55,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:07:55,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:07:55,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:55,946 INFO L225 Difference]: With dead ends: 22491 [2022-07-21 08:07:55,946 INFO L226 Difference]: Without dead ends: 18019 [2022-07-21 08:07:55,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:07:55,958 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 1392 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 2830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:55,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1416 Valid, 2602 Invalid, 2830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:07:55,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18019 states. [2022-07-21 08:07:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18019 to 13414. [2022-07-21 08:07:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13414 states, 11642 states have (on average 1.4220065280879575) internal successors, (16555), 11713 states have internal predecessors, (16555), 1029 states have call successors, (1029), 595 states have call predecessors, (1029), 741 states have return successors, (1574), 1137 states have call predecessors, (1574), 1026 states have call successors, (1574) [2022-07-21 08:07:56,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13414 states to 13414 states and 19158 transitions. [2022-07-21 08:07:56,915 INFO L78 Accepts]: Start accepts. Automaton has 13414 states and 19158 transitions. Word has length 135 [2022-07-21 08:07:56,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:56,915 INFO L495 AbstractCegarLoop]: Abstraction has 13414 states and 19158 transitions. [2022-07-21 08:07:56,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:07:56,916 INFO L276 IsEmpty]: Start isEmpty. Operand 13414 states and 19158 transitions. [2022-07-21 08:07:56,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:07:56,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:56,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:56,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:07:56,928 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:56,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:56,928 INFO L85 PathProgramCache]: Analyzing trace with hash -598084680, now seen corresponding path program 1 times [2022-07-21 08:07:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:56,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83420144] [2022-07-21 08:07:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:56,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:56,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:07:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:07:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:07:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:57,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83420144] [2022-07-21 08:07:57,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83420144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:57,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:57,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127147876] [2022-07-21 08:07:57,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:57,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:57,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:57,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:57,028 INFO L87 Difference]: Start difference. First operand 13414 states and 19158 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:01,355 INFO L93 Difference]: Finished difference Result 38962 states and 59359 transitions. [2022-07-21 08:08:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:01,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:08:01,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:01,506 INFO L225 Difference]: With dead ends: 38962 [2022-07-21 08:08:01,506 INFO L226 Difference]: Without dead ends: 30305 [2022-07-21 08:08:01,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:01,529 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 1601 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 2455 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:01,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 2455 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:08:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30305 states. [2022-07-21 08:08:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30305 to 21447. [2022-07-21 08:08:03,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21447 states, 18955 states have (on average 1.4635188604589817) internal successors, (27741), 19058 states have internal predecessors, (27741), 1525 states have call successors, (1525), 787 states have call predecessors, (1525), 965 states have return successors, (2588), 1665 states have call predecessors, (2588), 1522 states have call successors, (2588) [2022-07-21 08:08:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21447 states to 21447 states and 31854 transitions. [2022-07-21 08:08:03,127 INFO L78 Accepts]: Start accepts. Automaton has 21447 states and 31854 transitions. Word has length 135 [2022-07-21 08:08:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 21447 states and 31854 transitions. [2022-07-21 08:08:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 21447 states and 31854 transitions. [2022-07-21 08:08:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:08:03,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:03,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:03,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:08:03,145 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:03,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:03,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1221366282, now seen corresponding path program 1 times [2022-07-21 08:08:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:03,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476392680] [2022-07-21 08:08:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:03,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:08:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:08:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:08:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:03,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:03,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476392680] [2022-07-21 08:08:03,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476392680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:03,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:03,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:03,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637210301] [2022-07-21 08:08:03,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:03,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:03,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:03,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:03,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:03,244 INFO L87 Difference]: Start difference. First operand 21447 states and 31854 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:09,550 INFO L93 Difference]: Finished difference Result 69391 states and 107873 transitions. [2022-07-21 08:08:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:09,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:08:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:09,736 INFO L225 Difference]: With dead ends: 69391 [2022-07-21 08:08:09,736 INFO L226 Difference]: Without dead ends: 52701 [2022-07-21 08:08:09,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:09,783 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1519 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:09,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 2450 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:08:09,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52701 states. [2022-07-21 08:08:12,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52701 to 37865. [2022-07-21 08:08:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37865 states, 33965 states have (on average 1.497099955836891) internal successors, (50849), 34132 states have internal predecessors, (50849), 2485 states have call successors, (2485), 1171 states have call predecessors, (2485), 1413 states have return successors, (5070), 2689 states have call predecessors, (5070), 2482 states have call successors, (5070) [2022-07-21 08:08:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37865 states to 37865 states and 58404 transitions. [2022-07-21 08:08:12,805 INFO L78 Accepts]: Start accepts. Automaton has 37865 states and 58404 transitions. Word has length 135 [2022-07-21 08:08:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:12,805 INFO L495 AbstractCegarLoop]: Abstraction has 37865 states and 58404 transitions. [2022-07-21 08:08:12,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:12,805 INFO L276 IsEmpty]: Start isEmpty. Operand 37865 states and 58404 transitions. [2022-07-21 08:08:12,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:08:12,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:12,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:12,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:08:12,822 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:12,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash 167927732, now seen corresponding path program 1 times [2022-07-21 08:08:12,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474330847] [2022-07-21 08:08:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:08:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:08:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:08:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:12,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:12,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474330847] [2022-07-21 08:08:12,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474330847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:12,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:12,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:12,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589898223] [2022-07-21 08:08:12,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:12,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:12,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:12,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:12,928 INFO L87 Difference]: Start difference. First operand 37865 states and 58404 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:24,464 INFO L93 Difference]: Finished difference Result 130991 states and 208169 transitions. [2022-07-21 08:08:24,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:24,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:08:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:24,916 INFO L225 Difference]: With dead ends: 130991 [2022-07-21 08:08:24,922 INFO L226 Difference]: Without dead ends: 97883 [2022-07-21 08:08:24,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:24,991 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1479 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 2283 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:24,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2445 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2283 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:08:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97883 states. [2022-07-21 08:08:30,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97883 to 70634. [2022-07-21 08:08:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70634 states, 63982 states have (on average 1.5179738051326936) internal successors, (97123), 64277 states have internal predecessors, (97123), 4341 states have call successors, (4341), 1939 states have call predecessors, (4341), 2309 states have return successors, (11428), 4673 states have call predecessors, (11428), 4338 states have call successors, (11428) [2022-07-21 08:08:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70634 states to 70634 states and 112892 transitions. [2022-07-21 08:08:31,243 INFO L78 Accepts]: Start accepts. Automaton has 70634 states and 112892 transitions. Word has length 135 [2022-07-21 08:08:31,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:31,243 INFO L495 AbstractCegarLoop]: Abstraction has 70634 states and 112892 transitions. [2022-07-21 08:08:31,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:31,244 INFO L276 IsEmpty]: Start isEmpty. Operand 70634 states and 112892 transitions. [2022-07-21 08:08:31,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:08:31,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:31,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:31,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:08:31,268 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:31,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:31,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1865466314, now seen corresponding path program 1 times [2022-07-21 08:08:31,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:31,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541708702] [2022-07-21 08:08:31,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:31,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:08:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:08:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:08:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:31,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:31,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541708702] [2022-07-21 08:08:31,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541708702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:31,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:31,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:31,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100255386] [2022-07-21 08:08:31,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:31,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:31,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:31,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:31,367 INFO L87 Difference]: Start difference. First operand 70634 states and 112892 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:40,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:40,679 INFO L93 Difference]: Finished difference Result 155154 states and 255729 transitions. [2022-07-21 08:08:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:40,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 135 [2022-07-21 08:08:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:40,969 INFO L225 Difference]: With dead ends: 155154 [2022-07-21 08:08:40,969 INFO L226 Difference]: Without dead ends: 89277 [2022-07-21 08:08:41,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:41,100 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1022 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:41,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1470 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:08:41,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89277 states. [2022-07-21 08:08:47,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89277 to 70634. [2022-07-21 08:08:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70634 states, 63982 states have (on average 1.5139570504204307) internal successors, (96866), 64277 states have internal predecessors, (96866), 4341 states have call successors, (4341), 1939 states have call predecessors, (4341), 2309 states have return successors, (11428), 4673 states have call predecessors, (11428), 4338 states have call successors, (11428) [2022-07-21 08:08:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70634 states to 70634 states and 112635 transitions. [2022-07-21 08:08:47,334 INFO L78 Accepts]: Start accepts. Automaton has 70634 states and 112635 transitions. Word has length 135 [2022-07-21 08:08:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:47,334 INFO L495 AbstractCegarLoop]: Abstraction has 70634 states and 112635 transitions. [2022-07-21 08:08:47,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-07-21 08:08:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand 70634 states and 112635 transitions. [2022-07-21 08:08:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-21 08:08:47,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:47,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:08:47,364 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:47,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash 562792308, now seen corresponding path program 1 times [2022-07-21 08:08:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:47,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290159030] [2022-07-21 08:08:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:08:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:08:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:08:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:47,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:47,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290159030] [2022-07-21 08:08:47,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290159030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:47,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:47,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:47,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120110578] [2022-07-21 08:08:47,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:47,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:47,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:47,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:47,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:47,478 INFO L87 Difference]: Start difference. First operand 70634 states and 112635 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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)