./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b395f094f2d3990354e9b2c1428e908d883c16492f3b21174dd87f3c0cfda780 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:05:21,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:05:21,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:05:21,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:05:21,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:05:21,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:05:21,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:05:21,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:05:21,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:05:21,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:05:21,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:05:21,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:05:21,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:05:21,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:05:21,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:05:21,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:05:21,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:05:21,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:05:21,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:05:21,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:05:21,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:05:21,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:05:21,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:05:21,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:05:21,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:05:21,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:05:21,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:05:21,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:05:21,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:05:21,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:05:21,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:05:21,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:05:21,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:05:21,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:05:21,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:05:21,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:05:21,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:05:21,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:05:21,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:05:21,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:05:21,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:05:21,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 21:05:21,907 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:05:21,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:05:21,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:05:21,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:05:21,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:05:21,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:05:21,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:05:21,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:05:21,910 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:05:21,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:05:21,910 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:05:21,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 21:05:21,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:05:21,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:05:21,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:05:21,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:05:21,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:05:21,912 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:05:21,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:05:21,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:05:21,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:05:21,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:05:21,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:05:21,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:05:21,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:05:21,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:05:21,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:05:21,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:05:21,914 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 21:05:21,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 21:05:21,915 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:05:21,915 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:05:21,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:05:21,915 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:05:21,915 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b395f094f2d3990354e9b2c1428e908d883c16492f3b21174dd87f3c0cfda780 [2021-12-17 21:05:22,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:05:22,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:05:22,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:05:22,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:05:22,150 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:05:22,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2021-12-17 21:05:22,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdd259a5/dac52a4e3a584cee8dfa25d69a58c9dd/FLAG0a79676d9 [2021-12-17 21:05:22,586 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:05:22,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2021-12-17 21:05:22,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdd259a5/dac52a4e3a584cee8dfa25d69a58c9dd/FLAG0a79676d9 [2021-12-17 21:05:22,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdd259a5/dac52a4e3a584cee8dfa25d69a58c9dd [2021-12-17 21:05:22,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:05:22,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:05:22,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:05:22,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:05:22,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:05:22,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:05:22" (1/1) ... [2021-12-17 21:05:22,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39eeed6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:22, skipping insertion in model container [2021-12-17 21:05:22,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:05:22" (1/1) ... [2021-12-17 21:05:22,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:05:23,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:05:23,139 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.07.cil-1.c[914,927] [2021-12-17 21:05:23,196 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.07.cil-1.c[7115,7128] [2021-12-17 21:05:23,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:05:23,270 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:05:23,277 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.07.cil-1.c[914,927] [2021-12-17 21:05:23,287 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.07.cil-1.c[7115,7128] [2021-12-17 21:05:23,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:05:23,363 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:05:23,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23 WrapperNode [2021-12-17 21:05:23,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:05:23,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:05:23,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:05:23,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:05:23,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,421 INFO L137 Inliner]: procedures = 67, calls = 78, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 750 [2021-12-17 21:05:23,421 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:05:23,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:05:23,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:05:23,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:05:23,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:05:23,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:05:23,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:05:23,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:05:23,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (1/1) ... [2021-12-17 21:05:23,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:05:23,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:23,524 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) [2021-12-17 21:05:23,576 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 [2021-12-17 21:05:23,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:05:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 21:05:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 21:05:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-17 21:05:23,592 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-17 21:05:23,592 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-17 21:05:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-17 21:05:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-17 21:05:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-17 21:05:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-17 21:05:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-17 21:05:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-17 21:05:23,593 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-17 21:05:23,593 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-17 21:05:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-17 21:05:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-17 21:05:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-17 21:05:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-17 21:05:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-17 21:05:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-17 21:05:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-17 21:05:23,594 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-17 21:05:23,594 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-17 21:05:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 21:05:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-17 21:05:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-17 21:05:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-17 21:05:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-17 21:05:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:05:23,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:05:23,595 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-17 21:05:23,596 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-17 21:05:23,726 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:05:23,728 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:05:24,152 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:05:24,160 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:05:24,160 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-17 21:05:24,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:05:24 BoogieIcfgContainer [2021-12-17 21:05:24,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:05:24,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:05:24,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:05:24,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:05:24,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:05:22" (1/3) ... [2021-12-17 21:05:24,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7805c048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:05:24, skipping insertion in model container [2021-12-17 21:05:24,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:05:23" (2/3) ... [2021-12-17 21:05:24,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7805c048 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:05:24, skipping insertion in model container [2021-12-17 21:05:24,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:05:24" (3/3) ... [2021-12-17 21:05:24,185 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-1.c [2021-12-17 21:05:24,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:05:24,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:05:24,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:05:24,231 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 21:05:24,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:05:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 306 states have (on average 1.6143790849673203) internal successors, (494), 312 states have internal predecessors, (494), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-17 21:05:24,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:24,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:24,259 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:24,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:24,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2006337748, now seen corresponding path program 1 times [2021-12-17 21:05:24,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:24,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153707106] [2021-12-17 21:05:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:24,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:24,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:24,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:24,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153707106] [2021-12-17 21:05:24,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153707106] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:24,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:24,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:24,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109587070] [2021-12-17 21:05:24,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:24,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:24,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:24,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:24,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:24,557 INFO L87 Difference]: Start difference. First operand has 358 states, 306 states have (on average 1.6143790849673203) internal successors, (494), 312 states have internal predecessors, (494), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:25,059 INFO L93 Difference]: Finished difference Result 712 states and 1119 transitions. [2021-12-17 21:05:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 21:05:25,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-17 21:05:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:25,072 INFO L225 Difference]: With dead ends: 712 [2021-12-17 21:05:25,072 INFO L226 Difference]: Without dead ends: 366 [2021-12-17 21:05:25,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:25,079 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 770 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:25,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 1223 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-12-17 21:05:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 348. [2021-12-17 21:05:25,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 298 states have (on average 1.5201342281879195) internal successors, (453), 302 states have internal predecessors, (453), 35 states have call successors, (35), 14 states have call predecessors, (35), 13 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-17 21:05:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 521 transitions. [2021-12-17 21:05:25,143 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 521 transitions. Word has length 65 [2021-12-17 21:05:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:25,147 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 521 transitions. [2021-12-17 21:05:25,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-17 21:05:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 521 transitions. [2021-12-17 21:05:25,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:25,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:25,150 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:25,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 21:05:25,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2047012498, now seen corresponding path program 1 times [2021-12-17 21:05:25,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:25,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121830628] [2021-12-17 21:05:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:25,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:25,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:25,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121830628] [2021-12-17 21:05:25,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121830628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:25,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:25,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:25,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083185080] [2021-12-17 21:05:25,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:25,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:25,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:25,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:25,288 INFO L87 Difference]: Start difference. First operand 348 states and 521 transitions. 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) [2021-12-17 21:05:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:26,026 INFO L93 Difference]: Finished difference Result 571 states and 835 transitions. [2021-12-17 21:05:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:26,027 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 [2021-12-17 21:05:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:26,030 INFO L225 Difference]: With dead ends: 571 [2021-12-17 21:05:26,030 INFO L226 Difference]: Without dead ends: 483 [2021-12-17 21:05:26,031 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:05:26,031 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 652 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:26,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 1988 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:26,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-12-17 21:05:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 444. [2021-12-17 21:05:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 374 states have (on average 1.4893048128342246) internal successors, (557), 380 states have internal predecessors, (557), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-17 21:05:26,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 652 transitions. [2021-12-17 21:05:26,064 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 652 transitions. Word has length 65 [2021-12-17 21:05:26,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:26,064 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 652 transitions. [2021-12-17 21:05:26,065 INFO L471 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) [2021-12-17 21:05:26,065 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 652 transitions. [2021-12-17 21:05:26,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:26,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:26,067 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:26,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 21:05:26,067 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -368123858, now seen corresponding path program 1 times [2021-12-17 21:05:26,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587347334] [2021-12-17 21:05:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:26,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:26,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:26,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587347334] [2021-12-17 21:05:26,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587347334] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:26,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:26,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:26,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542287816] [2021-12-17 21:05:26,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:26,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:26,170 INFO L87 Difference]: Start difference. First operand 444 states and 652 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) [2021-12-17 21:05:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:26,956 INFO L93 Difference]: Finished difference Result 791 states and 1128 transitions. [2021-12-17 21:05:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 21:05:26,957 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 [2021-12-17 21:05:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:26,960 INFO L225 Difference]: With dead ends: 791 [2021-12-17 21:05:26,960 INFO L226 Difference]: Without dead ends: 614 [2021-12-17 21:05:26,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-17 21:05:26,962 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 1034 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:26,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 1814 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-17 21:05:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 540. [2021-12-17 21:05:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 450 states have (on average 1.4666666666666666) internal successors, (660), 458 states have internal predecessors, (660), 57 states have call successors, (57), 28 states have call predecessors, (57), 31 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2021-12-17 21:05:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 785 transitions. [2021-12-17 21:05:26,990 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 785 transitions. Word has length 65 [2021-12-17 21:05:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:26,991 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 785 transitions. [2021-12-17 21:05:26,991 INFO L471 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) [2021-12-17 21:05:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 785 transitions. [2021-12-17 21:05:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:26,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:26,993 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:26,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 21:05:26,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1898257328, now seen corresponding path program 1 times [2021-12-17 21:05:26,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:26,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065122216] [2021-12-17 21:05:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:26,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:27,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:27,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065122216] [2021-12-17 21:05:27,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065122216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:27,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:27,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:27,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084083867] [2021-12-17 21:05:27,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:27,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:27,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:27,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:27,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:27,075 INFO L87 Difference]: Start difference. First operand 540 states and 785 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) [2021-12-17 21:05:27,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:27,635 INFO L93 Difference]: Finished difference Result 867 states and 1239 transitions. [2021-12-17 21:05:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:05:27,635 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 [2021-12-17 21:05:27,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:27,638 INFO L225 Difference]: With dead ends: 867 [2021-12-17 21:05:27,638 INFO L226 Difference]: Without dead ends: 600 [2021-12-17 21:05:27,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:05:27,640 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 659 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:27,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 2183 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:05:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-17 21:05:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 555. [2021-12-17 21:05:27,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 462 states have (on average 1.4545454545454546) internal successors, (672), 470 states have internal predecessors, (672), 57 states have call successors, (57), 28 states have call predecessors, (57), 34 states have return successors, (71), 60 states have call predecessors, (71), 55 states have call successors, (71) [2021-12-17 21:05:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 800 transitions. [2021-12-17 21:05:27,661 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 800 transitions. Word has length 65 [2021-12-17 21:05:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:27,662 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 800 transitions. [2021-12-17 21:05:27,662 INFO L471 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) [2021-12-17 21:05:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 800 transitions. [2021-12-17 21:05:27,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:27,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:27,664 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:27,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 21:05:27,664 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:27,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash 512053934, now seen corresponding path program 1 times [2021-12-17 21:05:27,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:27,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322899908] [2021-12-17 21:05:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:27,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:27,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:27,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322899908] [2021-12-17 21:05:27,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322899908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:27,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:27,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:27,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679248856] [2021-12-17 21:05:27,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:27,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:27,756 INFO L87 Difference]: Start difference. First operand 555 states and 800 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) [2021-12-17 21:05:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:28,319 INFO L93 Difference]: Finished difference Result 873 states and 1232 transitions. [2021-12-17 21:05:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:05:28,320 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 [2021-12-17 21:05:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:28,322 INFO L225 Difference]: With dead ends: 873 [2021-12-17 21:05:28,322 INFO L226 Difference]: Without dead ends: 591 [2021-12-17 21:05:28,323 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:05:28,324 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 669 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:28,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 2165 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:05:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-12-17 21:05:28,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 560. [2021-12-17 21:05:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 466 states have (on average 1.446351931330472) internal successors, (674), 474 states have internal predecessors, (674), 57 states have call successors, (57), 28 states have call predecessors, (57), 35 states have return successors, (72), 61 states have call predecessors, (72), 55 states have call successors, (72) [2021-12-17 21:05:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 803 transitions. [2021-12-17 21:05:28,343 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 803 transitions. Word has length 65 [2021-12-17 21:05:28,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:28,343 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 803 transitions. [2021-12-17 21:05:28,343 INFO L471 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) [2021-12-17 21:05:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 803 transitions. [2021-12-17 21:05:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:28,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:28,345 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:28,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 21:05:28,345 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:28,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:28,346 INFO L85 PathProgramCache]: Analyzing trace with hash -517305364, now seen corresponding path program 1 times [2021-12-17 21:05:28,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:28,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90230892] [2021-12-17 21:05:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:28,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:28,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:28,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90230892] [2021-12-17 21:05:28,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90230892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:28,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:28,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:28,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273101356] [2021-12-17 21:05:28,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:28,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:28,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:28,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:28,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:28,442 INFO L87 Difference]: Start difference. First operand 560 states and 803 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) [2021-12-17 21:05:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:29,714 INFO L93 Difference]: Finished difference Result 2271 states and 3132 transitions. [2021-12-17 21:05:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 21:05:29,714 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 [2021-12-17 21:05:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:29,721 INFO L225 Difference]: With dead ends: 2271 [2021-12-17 21:05:29,721 INFO L226 Difference]: Without dead ends: 1984 [2021-12-17 21:05:29,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 21:05:29,723 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 2374 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:29,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2397 Valid, 1975 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 21:05:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-12-17 21:05:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1730. [2021-12-17 21:05:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1390 states have (on average 1.3517985611510792) internal successors, (1879), 1418 states have internal predecessors, (1879), 174 states have call successors, (174), 130 states have call predecessors, (174), 164 states have return successors, (267), 185 states have call predecessors, (267), 172 states have call successors, (267) [2021-12-17 21:05:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2320 transitions. [2021-12-17 21:05:29,781 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2320 transitions. Word has length 65 [2021-12-17 21:05:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:29,782 INFO L470 AbstractCegarLoop]: Abstraction has 1730 states and 2320 transitions. [2021-12-17 21:05:29,782 INFO L471 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) [2021-12-17 21:05:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2320 transitions. [2021-12-17 21:05:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:05:29,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:29,783 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:29,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 21:05:29,783 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:29,784 INFO L85 PathProgramCache]: Analyzing trace with hash 462107460, now seen corresponding path program 1 times [2021-12-17 21:05:29,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:29,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756804271] [2021-12-17 21:05:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:29,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:29,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:29,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756804271] [2021-12-17 21:05:29,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756804271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:29,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:29,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:29,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700671273] [2021-12-17 21:05:29,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:29,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:29,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:29,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:29,846 INFO L87 Difference]: Start difference. First operand 1730 states and 2320 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) [2021-12-17 21:05:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:30,218 INFO L93 Difference]: Finished difference Result 4618 states and 6096 transitions. [2021-12-17 21:05:30,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:05:30,218 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 [2021-12-17 21:05:30,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:30,231 INFO L225 Difference]: With dead ends: 4618 [2021-12-17 21:05:30,231 INFO L226 Difference]: Without dead ends: 3164 [2021-12-17 21:05:30,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:05:30,235 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 1256 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:30,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 1228 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:05:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-12-17 21:05:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2896. [2021-12-17 21:05:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2301 states have (on average 1.3094306823120383) internal successors, (3013), 2349 states have internal predecessors, (3013), 293 states have call successors, (293), 232 states have call predecessors, (293), 300 states have return successors, (505), 318 states have call predecessors, (505), 291 states have call successors, (505) [2021-12-17 21:05:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 3811 transitions. [2021-12-17 21:05:30,351 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 3811 transitions. Word has length 65 [2021-12-17 21:05:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:30,351 INFO L470 AbstractCegarLoop]: Abstraction has 2896 states and 3811 transitions. [2021-12-17 21:05:30,351 INFO L471 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) [2021-12-17 21:05:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 3811 transitions. [2021-12-17 21:05:30,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:05:30,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:30,352 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:30,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 21:05:30,353 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2123328339, now seen corresponding path program 1 times [2021-12-17 21:05:30,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:30,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845937350] [2021-12-17 21:05:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:30,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:30,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:30,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:30,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845937350] [2021-12-17 21:05:30,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845937350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:30,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:30,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:30,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941487054] [2021-12-17 21:05:30,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:30,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:30,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:30,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:30,398 INFO L87 Difference]: Start difference. First operand 2896 states and 3811 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) [2021-12-17 21:05:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:30,905 INFO L93 Difference]: Finished difference Result 7780 states and 10204 transitions. [2021-12-17 21:05:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:05:30,906 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 [2021-12-17 21:05:30,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:30,922 INFO L225 Difference]: With dead ends: 7780 [2021-12-17 21:05:30,923 INFO L226 Difference]: Without dead ends: 5139 [2021-12-17 21:05:30,928 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:05:30,929 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 612 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:30,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1508 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2021-12-17 21:05:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 4612. [2021-12-17 21:05:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 3614 states have (on average 1.29136690647482) internal successors, (4667), 3675 states have internal predecessors, (4667), 490 states have call successors, (490), 406 states have call predecessors, (490), 506 states have return successors, (840), 534 states have call predecessors, (840), 488 states have call successors, (840) [2021-12-17 21:05:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 5997 transitions. [2021-12-17 21:05:31,115 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 5997 transitions. Word has length 66 [2021-12-17 21:05:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:31,116 INFO L470 AbstractCegarLoop]: Abstraction has 4612 states and 5997 transitions. [2021-12-17 21:05:31,116 INFO L471 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) [2021-12-17 21:05:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 5997 transitions. [2021-12-17 21:05:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 21:05:31,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:31,118 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:31,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 21:05:31,118 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:31,118 INFO L85 PathProgramCache]: Analyzing trace with hash 327965069, now seen corresponding path program 1 times [2021-12-17 21:05:31,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:31,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635079189] [2021-12-17 21:05:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:31,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 21:05:31,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:31,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635079189] [2021-12-17 21:05:31,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635079189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:31,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:31,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:31,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233838575] [2021-12-17 21:05:31,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:31,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:31,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:31,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:31,170 INFO L87 Difference]: Start difference. First operand 4612 states and 5997 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:31,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:31,526 INFO L93 Difference]: Finished difference Result 6697 states and 8605 transitions. [2021-12-17 21:05:31,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:05:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2021-12-17 21:05:31,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:31,539 INFO L225 Difference]: With dead ends: 6697 [2021-12-17 21:05:31,539 INFO L226 Difference]: Without dead ends: 3972 [2021-12-17 21:05:31,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-17 21:05:31,543 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 995 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:31,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 1247 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:05:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2021-12-17 21:05:31,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 3619. [2021-12-17 21:05:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3619 states, 2841 states have (on average 1.2763111580429427) internal successors, (3626), 2890 states have internal predecessors, (3626), 392 states have call successors, (392), 324 states have call predecessors, (392), 384 states have return successors, (597), 408 states have call predecessors, (597), 390 states have call successors, (597) [2021-12-17 21:05:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3619 states to 3619 states and 4615 transitions. [2021-12-17 21:05:31,680 INFO L78 Accepts]: Start accepts. Automaton has 3619 states and 4615 transitions. Word has length 73 [2021-12-17 21:05:31,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:31,681 INFO L470 AbstractCegarLoop]: Abstraction has 3619 states and 4615 transitions. [2021-12-17 21:05:31,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 21:05:31,681 INFO L276 IsEmpty]: Start isEmpty. Operand 3619 states and 4615 transitions. [2021-12-17 21:05:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 21:05:31,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:31,682 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:31,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 21:05:31,683 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:31,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1130274590, now seen corresponding path program 1 times [2021-12-17 21:05:31,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:31,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792160461] [2021-12-17 21:05:31,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:31,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:31,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:31,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792160461] [2021-12-17 21:05:31,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792160461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:31,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:31,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:31,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236627068] [2021-12-17 21:05:31,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:31,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:31,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:31,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:31,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:31,741 INFO L87 Difference]: Start difference. First operand 3619 states and 4615 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) [2021-12-17 21:05:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:32,224 INFO L93 Difference]: Finished difference Result 5160 states and 6511 transitions. [2021-12-17 21:05:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:05:32,225 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 [2021-12-17 21:05:32,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:32,241 INFO L225 Difference]: With dead ends: 5160 [2021-12-17 21:05:32,241 INFO L226 Difference]: Without dead ends: 5157 [2021-12-17 21:05:32,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:05:32,243 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 1738 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:32,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 1017 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:05:32,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2021-12-17 21:05:32,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 4693. [2021-12-17 21:05:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4693 states, 3658 states have (on average 1.2624384909786768) internal successors, (4618), 3720 states have internal predecessors, (4618), 518 states have call successors, (518), 438 states have call predecessors, (518), 515 states have return successors, (800), 538 states have call predecessors, (800), 517 states have call successors, (800) [2021-12-17 21:05:32,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 5936 transitions. [2021-12-17 21:05:32,462 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 5936 transitions. Word has length 73 [2021-12-17 21:05:32,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:32,463 INFO L470 AbstractCegarLoop]: Abstraction has 4693 states and 5936 transitions. [2021-12-17 21:05:32,463 INFO L471 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) [2021-12-17 21:05:32,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 5936 transitions. [2021-12-17 21:05:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-17 21:05:32,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:32,464 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:32,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 21:05:32,465 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:32,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash -679840836, now seen corresponding path program 1 times [2021-12-17 21:05:32,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:32,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960632583] [2021-12-17 21:05:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:32,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:32,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:32,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960632583] [2021-12-17 21:05:32,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960632583] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 21:05:32,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033511363] [2021-12-17 21:05:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:32,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 21:05:32,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:05:32,568 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) [2021-12-17 21:05:32,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 21:05:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:32,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 21:05:32,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 21:05:32,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:32,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 21:05:33,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:33,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033511363] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 21:05:33,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 21:05:33,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-17 21:05:33,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947655229] [2021-12-17 21:05:33,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 21:05:33,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 21:05:33,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 21:05:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:33,165 INFO L87 Difference]: Start difference. First operand 4693 states and 5936 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) [2021-12-17 21:05:34,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:34,509 INFO L93 Difference]: Finished difference Result 10985 states and 13702 transitions. [2021-12-17 21:05:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 21:05:34,510 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 [2021-12-17 21:05:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:34,550 INFO L225 Difference]: With dead ends: 10985 [2021-12-17 21:05:34,550 INFO L226 Difference]: Without dead ends: 10982 [2021-12-17 21:05:34,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 173 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2021-12-17 21:05:34,557 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 1715 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:34,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 2234 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 21:05:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10982 states. [2021-12-17 21:05:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10982 to 8821. [2021-12-17 21:05:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 6865 states have (on average 1.2520029133284778) internal successors, (8595), 6982 states have internal predecessors, (8595), 962 states have call successors, (962), 825 states have call predecessors, (962), 992 states have return successors, (1501), 1017 states have call predecessors, (1501), 961 states have call successors, (1501) [2021-12-17 21:05:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 11058 transitions. [2021-12-17 21:05:35,019 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 11058 transitions. Word has length 74 [2021-12-17 21:05:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:35,019 INFO L470 AbstractCegarLoop]: Abstraction has 8821 states and 11058 transitions. [2021-12-17 21:05:35,020 INFO L471 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) [2021-12-17 21:05:35,020 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 11058 transitions. [2021-12-17 21:05:35,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 21:05:35,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:35,023 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:35,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 21:05:35,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 21:05:35,240 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:35,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:35,240 INFO L85 PathProgramCache]: Analyzing trace with hash 669680098, now seen corresponding path program 2 times [2021-12-17 21:05:35,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:35,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717836832] [2021-12-17 21:05:35,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:35,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:35,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:35,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717836832] [2021-12-17 21:05:35,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717836832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:35,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:35,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:35,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375408242] [2021-12-17 21:05:35,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:35,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:35,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:35,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:35,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:35,294 INFO L87 Difference]: Start difference. First operand 8821 states and 11058 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) [2021-12-17 21:05:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:35,712 INFO L93 Difference]: Finished difference Result 13597 states and 17046 transitions. [2021-12-17 21:05:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 21:05:35,712 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 [2021-12-17 21:05:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:35,732 INFO L225 Difference]: With dead ends: 13597 [2021-12-17 21:05:35,732 INFO L226 Difference]: Without dead ends: 5496 [2021-12-17 21:05:35,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-17 21:05:35,745 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1136 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:35,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 1123 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 21:05:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-12-17 21:05:35,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 4649. [2021-12-17 21:05:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 3651 states have (on average 1.234730210901123) internal successors, (4508), 3712 states have internal predecessors, (4508), 496 states have call successors, (496), 415 states have call predecessors, (496), 500 states have return successors, (735), 525 states have call predecessors, (735), 495 states have call successors, (735) [2021-12-17 21:05:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 5739 transitions. [2021-12-17 21:05:35,900 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 5739 transitions. Word has length 77 [2021-12-17 21:05:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:35,901 INFO L470 AbstractCegarLoop]: Abstraction has 4649 states and 5739 transitions. [2021-12-17 21:05:35,901 INFO L471 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) [2021-12-17 21:05:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 5739 transitions. [2021-12-17 21:05:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-17 21:05:35,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:35,903 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:35,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 21:05:35,903 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1857100594, now seen corresponding path program 1 times [2021-12-17 21:05:35,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:35,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131736587] [2021-12-17 21:05:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:35,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-17 21:05:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 21:05:35,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:35,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131736587] [2021-12-17 21:05:35,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131736587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:35,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:35,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:05:35,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983390696] [2021-12-17 21:05:35,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:35,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:05:35,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:35,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:05:35,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:05:35,963 INFO L87 Difference]: Start difference. First operand 4649 states and 5739 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) [2021-12-17 21:05:36,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:36,915 INFO L93 Difference]: Finished difference Result 13403 states and 16483 transitions. [2021-12-17 21:05:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 21:05:36,915 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 [2021-12-17 21:05:36,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:36,943 INFO L225 Difference]: With dead ends: 13403 [2021-12-17 21:05:36,943 INFO L226 Difference]: Without dead ends: 9023 [2021-12-17 21:05:36,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-17 21:05:36,957 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1410 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:36,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 1624 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:36,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9023 states. [2021-12-17 21:05:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9023 to 8509. [2021-12-17 21:05:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8509 states, 6535 states have (on average 1.2100994644223413) internal successors, (7908), 6738 states have internal predecessors, (7908), 944 states have call successors, (944), 793 states have call predecessors, (944), 1028 states have return successors, (1603), 984 states have call predecessors, (1603), 943 states have call successors, (1603) [2021-12-17 21:05:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8509 states to 8509 states and 10455 transitions. [2021-12-17 21:05:37,301 INFO L78 Accepts]: Start accepts. Automaton has 8509 states and 10455 transitions. Word has length 84 [2021-12-17 21:05:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:37,301 INFO L470 AbstractCegarLoop]: Abstraction has 8509 states and 10455 transitions. [2021-12-17 21:05:37,301 INFO L471 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) [2021-12-17 21:05:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8509 states and 10455 transitions. [2021-12-17 21:05:37,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 21:05:37,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:37,307 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:37,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 21:05:37,307 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:37,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash 887628672, now seen corresponding path program 1 times [2021-12-17 21:05:37,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:37,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56650173] [2021-12-17 21:05:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:37,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:05:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:05:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:05:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:05:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:05:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 21:05:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 21:05:37,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:37,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56650173] [2021-12-17 21:05:37,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56650173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:37,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:37,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:05:37,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367943652] [2021-12-17 21:05:37,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:37,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:05:37,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:37,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:05:37,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:37,380 INFO L87 Difference]: Start difference. First operand 8509 states and 10455 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) [2021-12-17 21:05:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:38,485 INFO L93 Difference]: Finished difference Result 14950 states and 18277 transitions. [2021-12-17 21:05:38,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-17 21:05:38,485 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 [2021-12-17 21:05:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:38,509 INFO L225 Difference]: With dead ends: 14950 [2021-12-17 21:05:38,510 INFO L226 Difference]: Without dead ends: 7560 [2021-12-17 21:05:38,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-17 21:05:38,527 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 1927 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:38,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1968 Valid, 1601 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:05:38,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2021-12-17 21:05:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 7036. [2021-12-17 21:05:38,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7036 states, 5431 states have (on average 1.201436199594918) internal successors, (6525), 5582 states have internal predecessors, (6525), 774 states have call successors, (774), 648 states have call predecessors, (774), 829 states have return successors, (1196), 812 states have call predecessors, (1196), 773 states have call successors, (1196) [2021-12-17 21:05:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 8495 transitions. [2021-12-17 21:05:38,839 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 8495 transitions. Word has length 93 [2021-12-17 21:05:38,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:38,839 INFO L470 AbstractCegarLoop]: Abstraction has 7036 states and 8495 transitions. [2021-12-17 21:05:38,839 INFO L471 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) [2021-12-17 21:05:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 8495 transitions. [2021-12-17 21:05:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:38,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:38,845 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:38,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 21:05:38,845 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash 521017431, now seen corresponding path program 1 times [2021-12-17 21:05:38,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:38,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222848224] [2021-12-17 21:05:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:38,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:38,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:38,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:38,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222848224] [2021-12-17 21:05:38,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222848224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:38,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:38,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 21:05:38,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404299616] [2021-12-17 21:05:38,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:38,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 21:05:38,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 21:05:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 21:05:38,912 INFO L87 Difference]: Start difference. First operand 7036 states and 8495 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:39,893 INFO L93 Difference]: Finished difference Result 7366 states and 9021 transitions. [2021-12-17 21:05:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:39,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:39,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:39,913 INFO L225 Difference]: With dead ends: 7366 [2021-12-17 21:05:39,913 INFO L226 Difference]: Without dead ends: 7123 [2021-12-17 21:05:39,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:05:39,918 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 754 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:39,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1005 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:05:39,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7123 states. [2021-12-17 21:05:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7123 to 7036. [2021-12-17 21:05:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7036 states, 5431 states have (on average 1.2012520714417234) internal successors, (6524), 5582 states have internal predecessors, (6524), 774 states have call successors, (774), 648 states have call predecessors, (774), 829 states have return successors, (1196), 812 states have call predecessors, (1196), 773 states have call successors, (1196) [2021-12-17 21:05:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7036 states to 7036 states and 8494 transitions. [2021-12-17 21:05:40,265 INFO L78 Accepts]: Start accepts. Automaton has 7036 states and 8494 transitions. Word has length 123 [2021-12-17 21:05:40,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:40,265 INFO L470 AbstractCegarLoop]: Abstraction has 7036 states and 8494 transitions. [2021-12-17 21:05:40,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:40,266 INFO L276 IsEmpty]: Start isEmpty. Operand 7036 states and 8494 transitions. [2021-12-17 21:05:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:40,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:40,271 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:40,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 21:05:40,272 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:40,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash 49661081, now seen corresponding path program 1 times [2021-12-17 21:05:40,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982648699] [2021-12-17 21:05:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:40,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:40,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:40,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982648699] [2021-12-17 21:05:40,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982648699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:40,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:40,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:05:40,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924026705] [2021-12-17 21:05:40,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:40,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:05:40,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:40,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:05:40,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:05:40,357 INFO L87 Difference]: Start difference. First operand 7036 states and 8494 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:41,869 INFO L93 Difference]: Finished difference Result 7692 states and 9541 transitions. [2021-12-17 21:05:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:05:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:41,889 INFO L225 Difference]: With dead ends: 7692 [2021-12-17 21:05:41,889 INFO L226 Difference]: Without dead ends: 7455 [2021-12-17 21:05:41,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:05:41,893 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1193 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:41,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1217 Valid, 1406 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 21:05:41,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7455 states. [2021-12-17 21:05:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7455 to 7282. [2021-12-17 21:05:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7282 states, 5654 states have (on average 1.215953307392996) internal successors, (6875), 5806 states have internal predecessors, (6875), 790 states have call successors, (790), 654 states have call predecessors, (790), 836 states have return successors, (1215), 828 states have call predecessors, (1215), 789 states have call successors, (1215) [2021-12-17 21:05:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7282 states to 7282 states and 8880 transitions. [2021-12-17 21:05:42,237 INFO L78 Accepts]: Start accepts. Automaton has 7282 states and 8880 transitions. Word has length 123 [2021-12-17 21:05:42,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:42,237 INFO L470 AbstractCegarLoop]: Abstraction has 7282 states and 8880 transitions. [2021-12-17 21:05:42,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 7282 states and 8880 transitions. [2021-12-17 21:05:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:42,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:42,247 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:42,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 21:05:42,247 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:42,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash -675902947, now seen corresponding path program 1 times [2021-12-17 21:05:42,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:42,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948081257] [2021-12-17 21:05:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:42,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:42,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:42,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948081257] [2021-12-17 21:05:42,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948081257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:42,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:42,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:42,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194759809] [2021-12-17 21:05:42,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:42,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:42,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:42,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:42,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:42,340 INFO L87 Difference]: Start difference. First operand 7282 states and 8880 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:44,244 INFO L93 Difference]: Finished difference Result 8280 states and 10470 transitions. [2021-12-17 21:05:44,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:44,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:44,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:44,263 INFO L225 Difference]: With dead ends: 8280 [2021-12-17 21:05:44,263 INFO L226 Difference]: Without dead ends: 7797 [2021-12-17 21:05:44,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:44,268 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 1202 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:44,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 2257 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 21:05:44,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2021-12-17 21:05:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7511. [2021-12-17 21:05:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7511 states, 5860 states have (on average 1.2273037542662115) internal successors, (7192), 6013 states have internal predecessors, (7192), 806 states have call successors, (806), 660 states have call predecessors, (806), 843 states have return successors, (1233), 845 states have call predecessors, (1233), 805 states have call successors, (1233) [2021-12-17 21:05:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7511 states to 7511 states and 9231 transitions. [2021-12-17 21:05:44,684 INFO L78 Accepts]: Start accepts. Automaton has 7511 states and 9231 transitions. Word has length 123 [2021-12-17 21:05:44,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:44,685 INFO L470 AbstractCegarLoop]: Abstraction has 7511 states and 9231 transitions. [2021-12-17 21:05:44,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:44,685 INFO L276 IsEmpty]: Start isEmpty. Operand 7511 states and 9231 transitions. [2021-12-17 21:05:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:44,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:44,691 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:44,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 21:05:44,691 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:44,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:44,692 INFO L85 PathProgramCache]: Analyzing trace with hash 713391067, now seen corresponding path program 1 times [2021-12-17 21:05:44,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:44,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330962753] [2021-12-17 21:05:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:44,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:44,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:44,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:44,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330962753] [2021-12-17 21:05:44,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330962753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:44,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:44,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:44,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462745191] [2021-12-17 21:05:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:44,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:44,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:44,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:44,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:44,772 INFO L87 Difference]: Start difference. First operand 7511 states and 9231 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:46,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:46,770 INFO L93 Difference]: Finished difference Result 9146 states and 11829 transitions. [2021-12-17 21:05:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:46,770 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:46,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:46,793 INFO L225 Difference]: With dead ends: 9146 [2021-12-17 21:05:46,793 INFO L226 Difference]: Without dead ends: 8434 [2021-12-17 21:05:46,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:46,799 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 1199 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:46,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1223 Valid, 2245 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:05:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8434 states. [2021-12-17 21:05:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8434 to 7970. [2021-12-17 21:05:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7970 states, 6273 states have (on average 1.2477283596365376) internal successors, (7827), 6428 states have internal predecessors, (7827), 838 states have call successors, (838), 672 states have call predecessors, (838), 857 states have return successors, (1273), 879 states have call predecessors, (1273), 837 states have call successors, (1273) [2021-12-17 21:05:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 9938 transitions. [2021-12-17 21:05:47,165 INFO L78 Accepts]: Start accepts. Automaton has 7970 states and 9938 transitions. Word has length 123 [2021-12-17 21:05:47,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:47,165 INFO L470 AbstractCegarLoop]: Abstraction has 7970 states and 9938 transitions. [2021-12-17 21:05:47,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7970 states and 9938 transitions. [2021-12-17 21:05:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:47,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:47,172 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:47,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 21:05:47,173 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:47,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1320002979, now seen corresponding path program 1 times [2021-12-17 21:05:47,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:47,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66495837] [2021-12-17 21:05:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:47,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:47,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:47,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66495837] [2021-12-17 21:05:47,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66495837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:47,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:47,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:47,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275590129] [2021-12-17 21:05:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:47,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:47,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:47,253 INFO L87 Difference]: Start difference. First operand 7970 states and 9938 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:48,479 INFO L93 Difference]: Finished difference Result 9595 states and 12529 transitions. [2021-12-17 21:05:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:48,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:48,500 INFO L225 Difference]: With dead ends: 9595 [2021-12-17 21:05:48,501 INFO L226 Difference]: Without dead ends: 8424 [2021-12-17 21:05:48,508 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:05:48,509 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 926 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:48,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 1339 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 21:05:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2021-12-17 21:05:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 7970. [2021-12-17 21:05:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7970 states, 6273 states have (on average 1.2469312928423402) internal successors, (7822), 6428 states have internal predecessors, (7822), 838 states have call successors, (838), 672 states have call predecessors, (838), 857 states have return successors, (1273), 879 states have call predecessors, (1273), 837 states have call successors, (1273) [2021-12-17 21:05:48,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7970 states to 7970 states and 9933 transitions. [2021-12-17 21:05:48,870 INFO L78 Accepts]: Start accepts. Automaton has 7970 states and 9933 transitions. Word has length 123 [2021-12-17 21:05:48,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:48,870 INFO L470 AbstractCegarLoop]: Abstraction has 7970 states and 9933 transitions. [2021-12-17 21:05:48,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:48,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7970 states and 9933 transitions. [2021-12-17 21:05:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:48,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:48,876 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:48,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 21:05:48,876 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1108255643, now seen corresponding path program 1 times [2021-12-17 21:05:48,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:48,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851063427] [2021-12-17 21:05:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:48,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:48,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:48,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:48,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851063427] [2021-12-17 21:05:48,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851063427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:48,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:48,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:48,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082440980] [2021-12-17 21:05:48,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:48,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:48,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:48,960 INFO L87 Difference]: Start difference. First operand 7970 states and 9933 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:51,007 INFO L93 Difference]: Finished difference Result 10802 states and 14390 transitions. [2021-12-17 21:05:51,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:51,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:51,033 INFO L225 Difference]: With dead ends: 10802 [2021-12-17 21:05:51,033 INFO L226 Difference]: Without dead ends: 9631 [2021-12-17 21:05:51,040 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:05:51,041 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1189 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:51,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 2229 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:05:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9631 states. [2021-12-17 21:05:51,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9631 to 8898. [2021-12-17 21:05:51,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8898 states, 7109 states have (on average 1.2804895203263469) internal successors, (9103), 7268 states have internal predecessors, (9103), 902 states have call successors, (902), 696 states have call predecessors, (902), 885 states have return successors, (1359), 947 states have call predecessors, (1359), 901 states have call successors, (1359) [2021-12-17 21:05:51,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 11364 transitions. [2021-12-17 21:05:51,543 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 11364 transitions. Word has length 123 [2021-12-17 21:05:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:51,543 INFO L470 AbstractCegarLoop]: Abstraction has 8898 states and 11364 transitions. [2021-12-17 21:05:51,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:51,543 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 11364 transitions. [2021-12-17 21:05:51,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:51,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:51,550 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:51,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 21:05:51,550 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:51,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:51,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1289214887, now seen corresponding path program 1 times [2021-12-17 21:05:51,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:51,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279580858] [2021-12-17 21:05:51,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:51,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:51,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279580858] [2021-12-17 21:05:51,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279580858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:51,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:51,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:51,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774937728] [2021-12-17 21:05:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:51,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:51,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:51,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:51,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:51,630 INFO L87 Difference]: Start difference. First operand 8898 states and 11364 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:53,683 INFO L93 Difference]: Finished difference Result 14138 states and 19597 transitions. [2021-12-17 21:05:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:53,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:53,711 INFO L225 Difference]: With dead ends: 14138 [2021-12-17 21:05:53,711 INFO L226 Difference]: Without dead ends: 12039 [2021-12-17 21:05:53,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:53,721 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 1188 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:53,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 2224 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 21:05:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12039 states. [2021-12-17 21:05:54,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12039 to 10757. [2021-12-17 21:05:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 8784 states have (on average 1.3282103825136613) internal successors, (11667), 8951 states have internal predecessors, (11667), 1030 states have call successors, (1030), 744 states have call predecessors, (1030), 941 states have return successors, (1549), 1083 states have call predecessors, (1549), 1029 states have call successors, (1549) [2021-12-17 21:05:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 14246 transitions. [2021-12-17 21:05:54,246 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 14246 transitions. Word has length 123 [2021-12-17 21:05:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:54,246 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 14246 transitions. [2021-12-17 21:05:54,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:54,247 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 14246 transitions. [2021-12-17 21:05:54,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:54,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:54,254 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:54,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 21:05:54,254 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:54,254 INFO L85 PathProgramCache]: Analyzing trace with hash -258173989, now seen corresponding path program 1 times [2021-12-17 21:05:54,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:54,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898189927] [2021-12-17 21:05:54,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:54,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:54,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:54,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898189927] [2021-12-17 21:05:54,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898189927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:54,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:54,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:54,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722477233] [2021-12-17 21:05:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:54,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:54,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:54,327 INFO L87 Difference]: Start difference. First operand 10757 states and 14246 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:56,312 INFO L93 Difference]: Finished difference Result 20807 states and 30065 transitions. [2021-12-17 21:05:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:05:56,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:56,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:56,356 INFO L225 Difference]: With dead ends: 20807 [2021-12-17 21:05:56,357 INFO L226 Difference]: Without dead ends: 16849 [2021-12-17 21:05:56,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 21:05:56,370 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 1187 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 2184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:56,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 2219 Invalid, 2184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2078 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 21:05:56,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16849 states. [2021-12-17 21:05:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16849 to 14490. [2021-12-17 21:05:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14490 states, 12149 states have (on average 1.3842291546629353) internal successors, (16817), 12332 states have internal predecessors, (16817), 1286 states have call successors, (1286), 840 states have call predecessors, (1286), 1053 states have return successors, (1983), 1355 states have call predecessors, (1983), 1285 states have call successors, (1983) [2021-12-17 21:05:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14490 states to 14490 states and 20086 transitions. [2021-12-17 21:05:57,032 INFO L78 Accepts]: Start accepts. Automaton has 14490 states and 20086 transitions. Word has length 123 [2021-12-17 21:05:57,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:57,033 INFO L470 AbstractCegarLoop]: Abstraction has 14490 states and 20086 transitions. [2021-12-17 21:05:57,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:57,033 INFO L276 IsEmpty]: Start isEmpty. Operand 14490 states and 20086 transitions. [2021-12-17 21:05:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:57,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:57,043 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:57,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 21:05:57,043 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:57,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:57,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2130390041, now seen corresponding path program 1 times [2021-12-17 21:05:57,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:57,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348482010] [2021-12-17 21:05:57,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:57,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:57,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:57,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:57,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:57,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:57,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348482010] [2021-12-17 21:05:57,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348482010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:57,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:57,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:57,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469662146] [2021-12-17 21:05:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:57,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:57,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:57,118 INFO L87 Difference]: Start difference. First operand 14490 states and 20086 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:05:58,731 INFO L93 Difference]: Finished difference Result 24638 states and 36305 transitions. [2021-12-17 21:05:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:05:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:05:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:05:58,783 INFO L225 Difference]: With dead ends: 24638 [2021-12-17 21:05:58,784 INFO L226 Difference]: Without dead ends: 16947 [2021-12-17 21:05:58,806 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:05:58,806 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 924 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 21:05:58,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 1322 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 21:05:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16947 states. [2021-12-17 21:05:59,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16947 to 14490. [2021-12-17 21:05:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14490 states, 12149 states have (on average 1.38151288171866) internal successors, (16784), 12332 states have internal predecessors, (16784), 1286 states have call successors, (1286), 840 states have call predecessors, (1286), 1053 states have return successors, (1983), 1355 states have call predecessors, (1983), 1285 states have call successors, (1983) [2021-12-17 21:05:59,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14490 states to 14490 states and 20053 transitions. [2021-12-17 21:05:59,711 INFO L78 Accepts]: Start accepts. Automaton has 14490 states and 20053 transitions. Word has length 123 [2021-12-17 21:05:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:05:59,711 INFO L470 AbstractCegarLoop]: Abstraction has 14490 states and 20053 transitions. [2021-12-17 21:05:59,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:05:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 14490 states and 20053 transitions. [2021-12-17 21:05:59,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:05:59,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:05:59,720 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:05:59,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 21:05:59,720 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:05:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:05:59,721 INFO L85 PathProgramCache]: Analyzing trace with hash -563506149, now seen corresponding path program 1 times [2021-12-17 21:05:59,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:05:59,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195010676] [2021-12-17 21:05:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:05:59,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:05:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:05:59,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:05:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:05:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:59,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:05:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:59,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:05:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:05:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:05:59,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:05:59,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195010676] [2021-12-17 21:05:59,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195010676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:05:59,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:05:59,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:05:59,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997257639] [2021-12-17 21:05:59,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:05:59,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:05:59,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:05:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:05:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:05:59,794 INFO L87 Difference]: Start difference. First operand 14490 states and 20053 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:01,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:01,304 INFO L93 Difference]: Finished difference Result 24604 states and 36138 transitions. [2021-12-17 21:06:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:06:01,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:06:01,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:01,342 INFO L225 Difference]: With dead ends: 24604 [2021-12-17 21:06:01,342 INFO L226 Difference]: Without dead ends: 16913 [2021-12-17 21:06:01,355 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:06:01,356 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1079 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:01,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1104 Valid, 1137 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:06:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16913 states. [2021-12-17 21:06:02,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16913 to 14490. [2021-12-17 21:06:02,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14490 states, 12149 states have (on average 1.3787966087743848) internal successors, (16751), 12332 states have internal predecessors, (16751), 1286 states have call successors, (1286), 840 states have call predecessors, (1286), 1053 states have return successors, (1983), 1355 states have call predecessors, (1983), 1285 states have call successors, (1983) [2021-12-17 21:06:02,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14490 states to 14490 states and 20020 transitions. [2021-12-17 21:06:02,066 INFO L78 Accepts]: Start accepts. Automaton has 14490 states and 20020 transitions. Word has length 123 [2021-12-17 21:06:02,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:02,067 INFO L470 AbstractCegarLoop]: Abstraction has 14490 states and 20020 transitions. [2021-12-17 21:06:02,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 14490 states and 20020 transitions. [2021-12-17 21:06:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:06:02,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:02,075 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:06:02,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 21:06:02,075 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:02,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1620237351, now seen corresponding path program 1 times [2021-12-17 21:06:02,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:02,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312081410] [2021-12-17 21:06:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:02,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:06:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:06:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:06:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:06:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:02,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:02,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312081410] [2021-12-17 21:06:02,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312081410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:02,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:02,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:02,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536655830] [2021-12-17 21:06:02,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:02,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:02,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:02,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:02,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:02,149 INFO L87 Difference]: Start difference. First operand 14490 states and 20020 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:03,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:03,663 INFO L93 Difference]: Finished difference Result 24570 states and 35971 transitions. [2021-12-17 21:06:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:06:03,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:06:03,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:03,709 INFO L225 Difference]: With dead ends: 24570 [2021-12-17 21:06:03,709 INFO L226 Difference]: Without dead ends: 16879 [2021-12-17 21:06:03,729 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:06:03,729 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 1077 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:03,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 1133 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:06:03,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16879 states. [2021-12-17 21:06:04,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16879 to 14490. [2021-12-17 21:06:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14490 states, 12149 states have (on average 1.3760803358301095) internal successors, (16718), 12332 states have internal predecessors, (16718), 1286 states have call successors, (1286), 840 states have call predecessors, (1286), 1053 states have return successors, (1983), 1355 states have call predecessors, (1983), 1285 states have call successors, (1983) [2021-12-17 21:06:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14490 states to 14490 states and 19987 transitions. [2021-12-17 21:06:04,519 INFO L78 Accepts]: Start accepts. Automaton has 14490 states and 19987 transitions. Word has length 123 [2021-12-17 21:06:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:04,519 INFO L470 AbstractCegarLoop]: Abstraction has 14490 states and 19987 transitions. [2021-12-17 21:06:04,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 14490 states and 19987 transitions. [2021-12-17 21:06:04,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:06:04,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:04,527 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:06:04,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 21:06:04,527 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:04,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:04,527 INFO L85 PathProgramCache]: Analyzing trace with hash -268852133, now seen corresponding path program 1 times [2021-12-17 21:06:04,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:04,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367306405] [2021-12-17 21:06:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:04,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:06:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:06:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:06:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:06:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:04,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:04,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367306405] [2021-12-17 21:06:04,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367306405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:04,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:04,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:04,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260083782] [2021-12-17 21:06:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:04,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:04,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:04,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:04,607 INFO L87 Difference]: Start difference. First operand 14490 states and 19987 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:07,856 INFO L93 Difference]: Finished difference Result 36220 states and 53893 transitions. [2021-12-17 21:06:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:06:07,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:06:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:07,933 INFO L225 Difference]: With dead ends: 36220 [2021-12-17 21:06:07,933 INFO L226 Difference]: Without dead ends: 28529 [2021-12-17 21:06:07,956 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:06:07,956 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1342 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:07,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2184 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:06:07,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28529 states. [2021-12-17 21:06:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28529 to 21990. [2021-12-17 21:06:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21990 states, 18945 states have (on average 1.4254948535233571) internal successors, (27006), 19160 states have internal predecessors, (27006), 1766 states have call successors, (1766), 1032 states have call predecessors, (1766), 1277 states have return successors, (2981), 1867 states have call predecessors, (2981), 1765 states have call successors, (2981) [2021-12-17 21:06:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21990 states to 21990 states and 31753 transitions. [2021-12-17 21:06:09,265 INFO L78 Accepts]: Start accepts. Automaton has 21990 states and 31753 transitions. Word has length 123 [2021-12-17 21:06:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:09,266 INFO L470 AbstractCegarLoop]: Abstraction has 21990 states and 31753 transitions. [2021-12-17 21:06:09,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 21990 states and 31753 transitions. [2021-12-17 21:06:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:06:09,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:09,278 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:06:09,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 21:06:09,278 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1887827047, now seen corresponding path program 1 times [2021-12-17 21:06:09,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:09,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239716626] [2021-12-17 21:06:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:09,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:06:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:09,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:06:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:09,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:06:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:06:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:09,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:09,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239716626] [2021-12-17 21:06:09,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239716626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:09,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:09,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:09,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825388925] [2021-12-17 21:06:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:09,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:09,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:09,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:09,356 INFO L87 Difference]: Start difference. First operand 21990 states and 31753 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:13,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:13,531 INFO L93 Difference]: Finished difference Result 62932 states and 96373 transitions. [2021-12-17 21:06:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:06:13,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:06:13,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:13,674 INFO L225 Difference]: With dead ends: 62932 [2021-12-17 21:06:13,674 INFO L226 Difference]: Without dead ends: 47741 [2021-12-17 21:06:13,712 INFO L932 BasicCegarLoop]: 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 [2021-12-17 21:06:13,712 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1186 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:13,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 2219 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:06:13,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47741 states. [2021-12-17 21:06:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47741 to 37016. [2021-12-17 21:06:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37016 states, 32595 states have (on average 1.4643350207086976) internal successors, (47730), 32874 states have internal predecessors, (47730), 2694 states have call successors, (2694), 1416 states have call predecessors, (2694), 1725 states have return successors, (5431), 2859 states have call predecessors, (5431), 2693 states have call successors, (5431) [2021-12-17 21:06:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37016 states to 37016 states and 55855 transitions. [2021-12-17 21:06:16,337 INFO L78 Accepts]: Start accepts. Automaton has 37016 states and 55855 transitions. Word has length 123 [2021-12-17 21:06:16,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:16,337 INFO L470 AbstractCegarLoop]: Abstraction has 37016 states and 55855 transitions. [2021-12-17 21:06:16,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:16,338 INFO L276 IsEmpty]: Start isEmpty. Operand 37016 states and 55855 transitions. [2021-12-17 21:06:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:06:16,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:16,356 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:06:16,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 21:06:16,357 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1916327337, now seen corresponding path program 1 times [2021-12-17 21:06:16,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:16,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098757358] [2021-12-17 21:06:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:16,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:06:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:06:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:06:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:06:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:16,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:16,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098757358] [2021-12-17 21:06:16,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098757358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:16,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:16,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:16,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887298176] [2021-12-17 21:06:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:16,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:16,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:16,463 INFO L87 Difference]: Start difference. First operand 37016 states and 55855 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:23,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:06:23,038 INFO L93 Difference]: Finished difference Result 116196 states and 182925 transitions. [2021-12-17 21:06:23,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:06:23,038 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-17 21:06:23,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:06:23,275 INFO L225 Difference]: With dead ends: 116196 [2021-12-17 21:06:23,275 INFO L226 Difference]: Without dead ends: 85979 [2021-12-17 21:06:23,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:06:23,341 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1219 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:06:23,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 2170 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 21:06:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85979 states. [2021-12-17 21:06:27,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85979 to 67001. [2021-12-17 21:06:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67001 states, 59892 states have (on average 1.4899485741000467) internal successors, (89236), 60299 states have internal predecessors, (89236), 4486 states have call successors, (4486), 2184 states have call predecessors, (4486), 2621 states have return successors, (11725), 4779 states have call predecessors, (11725), 4485 states have call successors, (11725) [2021-12-17 21:06:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67001 states to 67001 states and 105447 transitions. [2021-12-17 21:06:27,700 INFO L78 Accepts]: Start accepts. Automaton has 67001 states and 105447 transitions. Word has length 123 [2021-12-17 21:06:27,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:06:27,700 INFO L470 AbstractCegarLoop]: Abstraction has 67001 states and 105447 transitions. [2021-12-17 21:06:27,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:06:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 67001 states and 105447 transitions. [2021-12-17 21:06:27,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 21:06:27,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:06:27,726 INFO L514 BasicCegarLoop]: 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] [2021-12-17 21:06:27,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 21:06:27,726 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:06:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:06:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash 438057945, now seen corresponding path program 1 times [2021-12-17 21:06:27,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:06:27,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804792060] [2021-12-17 21:06:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:06:27,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:06:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:27,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:06:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:06:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:06:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:06:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:06:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:06:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 21:06:27,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:06:27,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804792060] [2021-12-17 21:06:27,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804792060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:06:27,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:06:27,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:06:27,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607400254] [2021-12-17 21:06:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:06:27,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:06:27,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:06:27,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:06:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:06:27,823 INFO L87 Difference]: Start difference. First operand 67001 states and 105447 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)