./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.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_3.cil+token_ring.07.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 21:08:48,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 21:08:48,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 21:08:48,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 21:08:48,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 21:08:48,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 21:08:48,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 21:08:48,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 21:08:48,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 21:08:48,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 21:08:48,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 21:08:48,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 21:08:48,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 21:08:48,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 21:08:48,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 21:08:48,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 21:08:48,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 21:08:48,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 21:08:49,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 21:08:49,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 21:08:49,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 21:08:49,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 21:08:49,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 21:08:49,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 21:08:49,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 21:08:49,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 21:08:49,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 21:08:49,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 21:08:49,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 21:08:49,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 21:08:49,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 21:08:49,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 21:08:49,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 21:08:49,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 21:08:49,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 21:08:49,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 21:08:49,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 21:08:49,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 21:08:49,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 21:08:49,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 21:08:49,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 21:08:49,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 21:08:49,042 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 21:08:49,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 21:08:49,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 21:08:49,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 21:08:49,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 21:08:49,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 21:08:49,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 21:08:49,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 21:08:49,044 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 21:08:49,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 21:08:49,044 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 21:08:49,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 21:08:49,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 21:08:49,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 21:08:49,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 21:08:49,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 21:08:49,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 21:08:49,045 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 21:08:49,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 21:08:49,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 21:08:49,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 21:08:49,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 21:08:49,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 21:08:49,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 21:08:49,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:08:49,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 21:08:49,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 21:08:49,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 21:08:49,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 21:08:49,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 21:08:49,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 21:08:49,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 21:08:49,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 21:08:49,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 21:08:49,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af [2021-12-17 21:08:49,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 21:08:49,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 21:08:49,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 21:08:49,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 21:08:49,214 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 21:08:49,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-17 21:08:49,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedd49eb1/f4f0b6edb17c4a24aa10d623a3a07359/FLAG344ebefe7 [2021-12-17 21:08:49,614 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 21:08:49,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-17 21:08:49,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedd49eb1/f4f0b6edb17c4a24aa10d623a3a07359/FLAG344ebefe7 [2021-12-17 21:08:49,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bedd49eb1/f4f0b6edb17c4a24aa10d623a3a07359 [2021-12-17 21:08:49,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 21:08:49,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 21:08:49,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 21:08:49,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 21:08:49,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 21:08:49,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:08:49" (1/1) ... [2021-12-17 21:08:49,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d762bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:49, skipping insertion in model container [2021-12-17 21:08:49,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:08:49" (1/1) ... [2021-12-17 21:08:49,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 21:08:49,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 21:08:49,847 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_3.cil+token_ring.07.cil-2.c[911,924] [2021-12-17 21:08:49,910 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_3.cil+token_ring.07.cil-2.c[8416,8429] [2021-12-17 21:08:49,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:08:49,973 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 21:08:49,987 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_3.cil+token_ring.07.cil-2.c[911,924] [2021-12-17 21:08:50,005 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_3.cil+token_ring.07.cil-2.c[8416,8429] [2021-12-17 21:08:50,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 21:08:50,036 INFO L208 MainTranslator]: Completed translation [2021-12-17 21:08:50,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50 WrapperNode [2021-12-17 21:08:50,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 21:08:50,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 21:08:50,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 21:08:50,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 21:08:50,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,085 INFO L137 Inliner]: procedures = 69, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 793 [2021-12-17 21:08:50,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 21:08:50,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 21:08:50,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 21:08:50,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 21:08:50,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 21:08:50,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 21:08:50,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 21:08:50,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 21:08:50,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (1/1) ... [2021-12-17 21:08:50,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 21:08:50,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 21:08:50,160 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 21:08:50,178 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 21:08:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 21:08:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 21:08:50,194 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 21:08:50,194 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-17 21:08:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-17 21:08:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-17 21:08:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-17 21:08:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-17 21:08:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-17 21:08:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-17 21:08:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-17 21:08:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-17 21:08:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-17 21:08:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-17 21:08:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-17 21:08:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-17 21:08:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-17 21:08:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-17 21:08:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-17 21:08:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-17 21:08:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-17 21:08:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-17 21:08:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-17 21:08:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 21:08:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-17 21:08:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-17 21:08:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-17 21:08:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-17 21:08:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 21:08:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 21:08:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-17 21:08:50,198 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-17 21:08:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-17 21:08:50,199 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-17 21:08:50,277 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 21:08:50,281 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 21:08:50,682 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-17 21:08:50,683 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-12-17 21:08:50,745 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 21:08:50,756 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 21:08:50,757 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-17 21:08:50,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:08:50 BoogieIcfgContainer [2021-12-17 21:08:50,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 21:08:50,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 21:08:50,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 21:08:50,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 21:08:50,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:08:49" (1/3) ... [2021-12-17 21:08:50,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5942a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:08:50, skipping insertion in model container [2021-12-17 21:08:50,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:08:50" (2/3) ... [2021-12-17 21:08:50,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5942a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:08:50, skipping insertion in model container [2021-12-17 21:08:50,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:08:50" (3/3) ... [2021-12-17 21:08:50,768 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-17 21:08:50,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 21:08:50,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 21:08:50,808 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 21:08:50,827 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 21:08:50,827 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 21:08:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-17 21:08:50,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:08:50,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:50,862 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 21:08:50,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:50,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1097425506, now seen corresponding path program 1 times [2021-12-17 21:08:50,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389361676] [2021-12-17 21:08:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:50,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:08:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:08:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:08:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,084 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 21:08:51,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:51,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389361676] [2021-12-17 21:08:51,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389361676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:51,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:51,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:08:51,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248777687] [2021-12-17 21:08:51,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:51,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:08:51,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:51,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:08:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:08:51,109 INFO L87 Difference]: Start difference. First operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) 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 21:08:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:51,553 INFO L93 Difference]: Finished difference Result 758 states and 1198 transitions. [2021-12-17 21:08:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 21:08:51,556 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 21:08:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:51,564 INFO L225 Difference]: With dead ends: 758 [2021-12-17 21:08:51,564 INFO L226 Difference]: Without dead ends: 389 [2021-12-17 21:08:51,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:08:51,570 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 596 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:51,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1583 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 21:08:51,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-17 21:08:51,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2021-12-17 21:08:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 317 states have (on average 1.5299684542586751) internal successors, (485), 322 states have internal predecessors, (485), 39 states have call successors, (39), 15 states have call predecessors, (39), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-17 21:08:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 559 transitions. [2021-12-17 21:08:51,617 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 559 transitions. Word has length 65 [2021-12-17 21:08:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:51,617 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 559 transitions. [2021-12-17 21:08:51,617 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 21:08:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 559 transitions. [2021-12-17 21:08:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:08:51,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:51,620 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 21:08:51,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 21:08:51,620 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:51,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:51,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1810756380, now seen corresponding path program 1 times [2021-12-17 21:08:51,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:51,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083799115] [2021-12-17 21:08:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:51,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:08:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:08:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:08:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:51,726 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 21:08:51,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:51,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083799115] [2021-12-17 21:08:51,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083799115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:51,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:51,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:08:51,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695149502] [2021-12-17 21:08:51,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:51,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:08:51,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:51,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:08:51,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:08:51,729 INFO L87 Difference]: Start difference. First operand 371 states and 559 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 21:08:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:52,404 INFO L93 Difference]: Finished difference Result 626 states and 928 transitions. [2021-12-17 21:08:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:08:52,405 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 21:08:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:52,408 INFO L225 Difference]: With dead ends: 626 [2021-12-17 21:08:52,408 INFO L226 Difference]: Without dead ends: 522 [2021-12-17 21:08:52,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-17 21:08:52,410 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 967 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:52,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 1664 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:08:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-17 21:08:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 483. [2021-12-17 21:08:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 407 states have (on average 1.5012285012285012) internal successors, (611), 414 states have internal predecessors, (611), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2021-12-17 21:08:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2021-12-17 21:08:52,436 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 65 [2021-12-17 21:08:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:52,437 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2021-12-17 21:08:52,437 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 21:08:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2021-12-17 21:08:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:08:52,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:52,439 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 21:08:52,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 21:08:52,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash -805322276, now seen corresponding path program 1 times [2021-12-17 21:08:52,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34231234] [2021-12-17 21:08:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:52,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:08:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:08:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:08:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:52,544 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 21:08:52,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:52,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34231234] [2021-12-17 21:08:52,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34231234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:52,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:52,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 21:08:52,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511661127] [2021-12-17 21:08:52,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:52,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 21:08:52,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 21:08:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:08:52,547 INFO L87 Difference]: Start difference. First operand 483 states and 716 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 21:08:53,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:53,388 INFO L93 Difference]: Finished difference Result 880 states and 1281 transitions. [2021-12-17 21:08:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 21:08:53,389 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 21:08:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:53,395 INFO L225 Difference]: With dead ends: 880 [2021-12-17 21:08:53,395 INFO L226 Difference]: Without dead ends: 671 [2021-12-17 21:08:53,398 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 21:08:53,401 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1070 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:53,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1097 Valid, 2343 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:08:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-12-17 21:08:53,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 595. [2021-12-17 21:08:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 497 states have (on average 1.4808853118712273) internal successors, (736), 506 states have internal predecessors, (736), 65 states have call successors, (65), 29 states have call predecessors, (65), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2021-12-17 21:08:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 875 transitions. [2021-12-17 21:08:53,451 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 875 transitions. Word has length 65 [2021-12-17 21:08:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:53,451 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 875 transitions. [2021-12-17 21:08:53,451 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 21:08:53,452 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 875 transitions. [2021-12-17 21:08:53,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 21:08:53,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:53,457 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 21:08:53,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 21:08:53,458 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1461058910, now seen corresponding path program 1 times [2021-12-17 21:08:53,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:53,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625898617] [2021-12-17 21:08:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:53,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-17 21:08:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 21:08:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 21:08:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:53,570 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 21:08:53,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:53,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625898617] [2021-12-17 21:08:53,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625898617] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:53,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:53,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:08:53,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846385056] [2021-12-17 21:08:53,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:53,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:08:53,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:08:53,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:08:53,576 INFO L87 Difference]: Start difference. First operand 595 states and 875 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), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:08:54,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:54,238 INFO L93 Difference]: Finished difference Result 1267 states and 1817 transitions. [2021-12-17 21:08:54,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:08:54,238 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), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-12-17 21:08:54,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:54,242 INFO L225 Difference]: With dead ends: 1267 [2021-12-17 21:08:54,242 INFO L226 Difference]: Without dead ends: 952 [2021-12-17 21:08:54,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-12-17 21:08:54,243 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1443 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:54,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1544 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:08:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-12-17 21:08:54,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 876. [2021-12-17 21:08:54,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 723 states have (on average 1.4426002766251729) internal successors, (1043), 736 states have internal predecessors, (1043), 95 states have call successors, (95), 50 states have call predecessors, (95), 56 states have return successors, (112), 93 states have call predecessors, (112), 91 states have call successors, (112) [2021-12-17 21:08:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1250 transitions. [2021-12-17 21:08:54,275 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1250 transitions. Word has length 65 [2021-12-17 21:08:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:54,275 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1250 transitions. [2021-12-17 21:08:54,275 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), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:08:54,276 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1250 transitions. [2021-12-17 21:08:54,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:08:54,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:54,277 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 21:08:54,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 21:08:54,277 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:54,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:54,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1639333971, now seen corresponding path program 1 times [2021-12-17 21:08:54,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:54,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317286751] [2021-12-17 21:08:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:54,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 21:08:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 21:08:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 21:08:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:54,346 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 21:08:54,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:54,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317286751] [2021-12-17 21:08:54,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317286751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:54,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:54,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:08:54,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230702019] [2021-12-17 21:08:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:54,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:08:54,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:08:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:08:54,349 INFO L87 Difference]: Start difference. First operand 876 states and 1250 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 21:08:54,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:54,996 INFO L93 Difference]: Finished difference Result 1592 states and 2255 transitions. [2021-12-17 21:08:54,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 21:08:54,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2021-12-17 21:08:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:55,000 INFO L225 Difference]: With dead ends: 1592 [2021-12-17 21:08:55,001 INFO L226 Difference]: Without dead ends: 996 [2021-12-17 21:08:55,002 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 21:08:55,002 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 461 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:55,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2657 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:08:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-12-17 21:08:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 906. [2021-12-17 21:08:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 747 states have (on average 1.428380187416332) internal successors, (1067), 760 states have internal predecessors, (1067), 95 states have call successors, (95), 50 states have call predecessors, (95), 62 states have return successors, (118), 99 states have call predecessors, (118), 91 states have call successors, (118) [2021-12-17 21:08:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1280 transitions. [2021-12-17 21:08:55,033 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1280 transitions. Word has length 66 [2021-12-17 21:08:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:55,033 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1280 transitions. [2021-12-17 21:08:55,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 21:08:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1280 transitions. [2021-12-17 21:08:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:08:55,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:55,034 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 21:08:55,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 21:08:55,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:55,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:55,035 INFO L85 PathProgramCache]: Analyzing trace with hash 253130577, now seen corresponding path program 1 times [2021-12-17 21:08:55,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:55,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262253840] [2021-12-17 21:08:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:55,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 21:08:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 21:08:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 21:08:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,114 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 21:08:55,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:55,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262253840] [2021-12-17 21:08:55,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262253840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:55,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:55,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:08:55,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536194033] [2021-12-17 21:08:55,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:55,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:08:55,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:55,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:08:55,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:08:55,117 INFO L87 Difference]: Start difference. First operand 906 states and 1280 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 21:08:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:55,768 INFO L93 Difference]: Finished difference Result 1616 states and 2255 transitions. [2021-12-17 21:08:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 21:08:55,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2021-12-17 21:08:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:55,773 INFO L225 Difference]: With dead ends: 1616 [2021-12-17 21:08:55,773 INFO L226 Difference]: Without dead ends: 990 [2021-12-17 21:08:55,774 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 21:08:55,776 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 695 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:55,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 2395 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:08:55,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-12-17 21:08:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 921. [2021-12-17 21:08:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 759 states have (on average 1.4176548089591567) internal successors, (1076), 772 states have internal predecessors, (1076), 95 states have call successors, (95), 50 states have call predecessors, (95), 65 states have return successors, (121), 102 states have call predecessors, (121), 91 states have call successors, (121) [2021-12-17 21:08:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1292 transitions. [2021-12-17 21:08:55,807 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1292 transitions. Word has length 66 [2021-12-17 21:08:55,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:55,807 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1292 transitions. [2021-12-17 21:08:55,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 21:08:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1292 transitions. [2021-12-17 21:08:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 21:08:55,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:55,808 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 21:08:55,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 21:08:55,809 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:55,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:55,809 INFO L85 PathProgramCache]: Analyzing trace with hash -776228721, now seen corresponding path program 1 times [2021-12-17 21:08:55,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:55,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542817103] [2021-12-17 21:08:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:55,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 21:08:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 21:08:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 21:08:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:55,932 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 21:08:55,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:55,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542817103] [2021-12-17 21:08:55,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542817103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:55,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:55,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:08:55,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441003433] [2021-12-17 21:08:55,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:55,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:08:55,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:55,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:08:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:08:55,934 INFO L87 Difference]: Start difference. First operand 921 states and 1292 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 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 21:08:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:57,427 INFO L93 Difference]: Finished difference Result 3253 states and 4581 transitions. [2021-12-17 21:08:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 21:08:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 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 66 [2021-12-17 21:08:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:57,432 INFO L225 Difference]: With dead ends: 3253 [2021-12-17 21:08:57,432 INFO L226 Difference]: Without dead ends: 1307 [2021-12-17 21:08:57,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 21:08:57,436 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 2025 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:57,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2049 Valid, 2719 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 21:08:57,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2021-12-17 21:08:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1144. [2021-12-17 21:08:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 923 states have (on average 1.3781148429035752) internal successors, (1272), 940 states have internal predecessors, (1272), 125 states have call successors, (125), 71 states have call predecessors, (125), 94 states have return successors, (173), 136 states have call predecessors, (173), 121 states have call successors, (173) [2021-12-17 21:08:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1570 transitions. [2021-12-17 21:08:57,488 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1570 transitions. Word has length 66 [2021-12-17 21:08:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:57,488 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 1570 transitions. [2021-12-17 21:08:57,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 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 21:08:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1570 transitions. [2021-12-17 21:08:57,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 21:08:57,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:57,490 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] [2021-12-17 21:08:57,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 21:08:57,490 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1984786467, now seen corresponding path program 1 times [2021-12-17 21:08:57,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:57,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302673062] [2021-12-17 21:08:57,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:57,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 21:08:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 21:08:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-17 21:08:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 21:08:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-17 21:08:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:57,565 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 21:08:57,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:57,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302673062] [2021-12-17 21:08:57,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302673062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:57,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:57,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 21:08:57,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841042193] [2021-12-17 21:08:57,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:57,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 21:08:57,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:57,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 21:08:57,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 21:08:57,567 INFO L87 Difference]: Start difference. First operand 1144 states and 1570 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:08:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:58,259 INFO L93 Difference]: Finished difference Result 2329 states and 3212 transitions. [2021-12-17 21:08:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 21:08:58,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 67 [2021-12-17 21:08:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:58,261 INFO L225 Difference]: With dead ends: 2329 [2021-12-17 21:08:58,261 INFO L226 Difference]: Without dead ends: 260 [2021-12-17 21:08:58,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-12-17 21:08:58,265 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1157 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:58,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1203 Valid, 2094 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:08:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-17 21:08:58,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-12-17 21:08:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 230 states have (on average 1.5608695652173914) internal successors, (359), 232 states have internal predecessors, (359), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-17 21:08:58,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 403 transitions. [2021-12-17 21:08:58,272 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 403 transitions. Word has length 67 [2021-12-17 21:08:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:58,272 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 403 transitions. [2021-12-17 21:08:58,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-17 21:08:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 403 transitions. [2021-12-17 21:08:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:08:58,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:58,273 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, 1] [2021-12-17 21:08:58,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 21:08:58,274 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:58,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash 959549796, now seen corresponding path program 1 times [2021-12-17 21:08:58,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:58,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205044815] [2021-12-17 21:08:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:58,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:08:58,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:08:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:08:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,335 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 21:08:58,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:58,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205044815] [2021-12-17 21:08:58,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205044815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:58,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:58,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 21:08:58,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498742222] [2021-12-17 21:08:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:58,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 21:08:58,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:58,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 21:08:58,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 21:08:58,338 INFO L87 Difference]: Start difference. First operand 260 states and 403 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:08:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:08:58,869 INFO L93 Difference]: Finished difference Result 600 states and 947 transitions. [2021-12-17 21:08:58,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 21:08:58,869 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:08:58,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:08:58,871 INFO L225 Difference]: With dead ends: 600 [2021-12-17 21:08:58,871 INFO L226 Difference]: Without dead ends: 347 [2021-12-17 21:08:58,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 21:08:58,872 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 669 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:08:58,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 734 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:08:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-17 21:08:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 260. [2021-12-17 21:08:58,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 230 states have (on average 1.5565217391304347) internal successors, (358), 232 states have internal predecessors, (358), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-17 21:08:58,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 402 transitions. [2021-12-17 21:08:58,882 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 402 transitions. Word has length 124 [2021-12-17 21:08:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:08:58,882 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 402 transitions. [2021-12-17 21:08:58,882 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:08:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 402 transitions. [2021-12-17 21:08:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:08:58,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:08:58,883 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, 1] [2021-12-17 21:08:58,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 21:08:58,889 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:08:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:08:58,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1292192934, now seen corresponding path program 1 times [2021-12-17 21:08:58,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:08:58,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812661390] [2021-12-17 21:08:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:08:58,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:08:58,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:08:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:08:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:08:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:08:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:08:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:08:58,963 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 21:08:58,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:08:58,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812661390] [2021-12-17 21:08:58,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812661390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:08:58,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:08:58,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 21:08:58,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036916374] [2021-12-17 21:08:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:08:58,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 21:08:58,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:08:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 21:08:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 21:08:58,965 INFO L87 Difference]: Start difference. First operand 260 states and 402 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:00,063 INFO L93 Difference]: Finished difference Result 930 states and 1473 transitions. [2021-12-17 21:09:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 21:09:00,064 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:00,067 INFO L225 Difference]: With dead ends: 930 [2021-12-17 21:09:00,067 INFO L226 Difference]: Without dead ends: 686 [2021-12-17 21:09:00,068 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 21:09:00,068 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 994 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:00,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1188 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 21:09:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-17 21:09:00,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 511. [2021-12-17 21:09:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 458 states have (on average 1.5698689956331877) internal successors, (719), 461 states have internal predecessors, (719), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-17 21:09:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 798 transitions. [2021-12-17 21:09:00,086 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 798 transitions. Word has length 124 [2021-12-17 21:09:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:00,086 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 798 transitions. [2021-12-17 21:09:00,087 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 798 transitions. [2021-12-17 21:09:00,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:00,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:00,088 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, 1] [2021-12-17 21:09:00,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 21:09:00,088 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 274544546, now seen corresponding path program 1 times [2021-12-17 21:09:00,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:00,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914828321] [2021-12-17 21:09:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:00,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:00,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:00,170 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 21:09:00,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:00,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914828321] [2021-12-17 21:09:00,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914828321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:00,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:00,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:00,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902823224] [2021-12-17 21:09:00,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:00,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:00,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:00,172 INFO L87 Difference]: Start difference. First operand 511 states and 798 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:01,640 INFO L93 Difference]: Finished difference Result 1528 states and 2422 transitions. [2021-12-17 21:09:01,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:09:01,641 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:01,644 INFO L225 Difference]: With dead ends: 1528 [2021-12-17 21:09:01,644 INFO L226 Difference]: Without dead ends: 1033 [2021-12-17 21:09:01,645 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 21:09:01,646 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1001 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2045 SdHoareTripleChecker+Invalid, 2027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:01,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 2045 Invalid, 2027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 21:09:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-12-17 21:09:01,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 745. [2021-12-17 21:09:01,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 669 states have (on average 1.5635276532137519) internal successors, (1046), 673 states have internal predecessors, (1046), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-17 21:09:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1159 transitions. [2021-12-17 21:09:01,670 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1159 transitions. Word has length 124 [2021-12-17 21:09:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:01,671 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1159 transitions. [2021-12-17 21:09:01,671 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:01,671 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1159 transitions. [2021-12-17 21:09:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:01,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:01,672 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, 1] [2021-12-17 21:09:01,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 21:09:01,672 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash 392986020, now seen corresponding path program 1 times [2021-12-17 21:09:01,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:01,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690635095] [2021-12-17 21:09:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:01,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:01,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:01,744 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 21:09:01,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:01,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690635095] [2021-12-17 21:09:01,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690635095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:01,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:01,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:01,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059580157] [2021-12-17 21:09:01,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:01,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:01,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:01,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:01,746 INFO L87 Difference]: Start difference. First operand 745 states and 1159 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:03,154 INFO L93 Difference]: Finished difference Result 2409 states and 3811 transitions. [2021-12-17 21:09:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:09:03,154 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:03,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:03,162 INFO L225 Difference]: With dead ends: 2409 [2021-12-17 21:09:03,163 INFO L226 Difference]: Without dead ends: 1680 [2021-12-17 21:09:03,167 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 21:09:03,167 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 998 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 2036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:03,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 2033 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 21:09:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2021-12-17 21:09:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1214. [2021-12-17 21:09:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1092 states have (on average 1.5576923076923077) internal successors, (1701), 1098 states have internal predecessors, (1701), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-17 21:09:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1886 transitions. [2021-12-17 21:09:03,217 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1886 transitions. Word has length 124 [2021-12-17 21:09:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:03,217 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1886 transitions. [2021-12-17 21:09:03,217 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1886 transitions. [2021-12-17 21:09:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:03,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:03,218 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, 1] [2021-12-17 21:09:03,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 21:09:03,219 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:03,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:03,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1782280034, now seen corresponding path program 1 times [2021-12-17 21:09:03,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:03,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15398692] [2021-12-17 21:09:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:03,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,304 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 21:09:03,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:03,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15398692] [2021-12-17 21:09:03,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15398692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:03,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:03,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:03,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118265305] [2021-12-17 21:09:03,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:03,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:03,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:03,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:03,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:03,306 INFO L87 Difference]: Start difference. First operand 1214 states and 1886 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:03,847 INFO L93 Difference]: Finished difference Result 2866 states and 4529 transitions. [2021-12-17 21:09:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:09:03,847 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:03,852 INFO L225 Difference]: With dead ends: 2866 [2021-12-17 21:09:03,852 INFO L226 Difference]: Without dead ends: 1668 [2021-12-17 21:09:03,855 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 21:09:03,857 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 883 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:03,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 902 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 21:09:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-12-17 21:09:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1214. [2021-12-17 21:09:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1092 states have (on average 1.5531135531135531) internal successors, (1696), 1098 states have internal predecessors, (1696), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-17 21:09:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1881 transitions. [2021-12-17 21:09:03,916 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1881 transitions. Word has length 124 [2021-12-17 21:09:03,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:03,917 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1881 transitions. [2021-12-17 21:09:03,917 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:03,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1881 transitions. [2021-12-17 21:09:03,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:03,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:03,918 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, 1] [2021-12-17 21:09:03,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 21:09:03,919 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:03,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -251114012, now seen corresponding path program 1 times [2021-12-17 21:09:03,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085368706] [2021-12-17 21:09:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:03,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:03,986 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 21:09:03,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:03,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085368706] [2021-12-17 21:09:03,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085368706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:03,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:03,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:03,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85946424] [2021-12-17 21:09:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:03,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:03,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:03,988 INFO L87 Difference]: Start difference. First operand 1214 states and 1881 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:05,286 INFO L93 Difference]: Finished difference Result 4095 states and 6432 transitions. [2021-12-17 21:09:05,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:09:05,287 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:05,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:05,296 INFO L225 Difference]: With dead ends: 4095 [2021-12-17 21:09:05,296 INFO L226 Difference]: Without dead ends: 2897 [2021-12-17 21:09:05,298 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 21:09:05,299 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 988 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:05,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 2017 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 21:09:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-12-17 21:09:05,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2162. [2021-12-17 21:09:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 1948 states have (on average 1.5487679671457906) internal successors, (3017), 1958 states have internal predecessors, (3017), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-17 21:09:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3352 transitions. [2021-12-17 21:09:05,387 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3352 transitions. Word has length 124 [2021-12-17 21:09:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:05,388 INFO L470 AbstractCegarLoop]: Abstraction has 2162 states and 3352 transitions. [2021-12-17 21:09:05,388 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3352 transitions. [2021-12-17 21:09:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:05,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:05,390 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, 1] [2021-12-17 21:09:05,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 21:09:05,391 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:05,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1558256410, now seen corresponding path program 1 times [2021-12-17 21:09:05,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:05,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701258304] [2021-12-17 21:09:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:05,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:05,473 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 21:09:05,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701258304] [2021-12-17 21:09:05,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701258304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:05,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:05,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:05,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341106500] [2021-12-17 21:09:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:05,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:05,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:05,475 INFO L87 Difference]: Start difference. First operand 2162 states and 3352 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:06,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:06,805 INFO L93 Difference]: Finished difference Result 7491 states and 11759 transitions. [2021-12-17 21:09:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:09:06,805 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:06,824 INFO L225 Difference]: With dead ends: 7491 [2021-12-17 21:09:06,824 INFO L226 Difference]: Without dead ends: 5345 [2021-12-17 21:09:06,831 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 21:09:06,832 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 987 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:06,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 2012 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 21:09:06,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-12-17 21:09:07,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4061. [2021-12-17 21:09:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4061 states, 3663 states have (on average 1.5454545454545454) internal successors, (5661), 3681 states have internal predecessors, (5661), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-17 21:09:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 6314 transitions. [2021-12-17 21:09:07,028 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 6314 transitions. Word has length 124 [2021-12-17 21:09:07,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:07,028 INFO L470 AbstractCegarLoop]: Abstraction has 4061 states and 6314 transitions. [2021-12-17 21:09:07,028 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:07,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 6314 transitions. [2021-12-17 21:09:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:07,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:07,031 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, 1] [2021-12-17 21:09:07,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 21:09:07,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:07,032 INFO L85 PathProgramCache]: Analyzing trace with hash 339240356, now seen corresponding path program 1 times [2021-12-17 21:09:07,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:07,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269771632] [2021-12-17 21:09:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:07,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:07,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:07,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:07,105 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 21:09:07,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:07,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269771632] [2021-12-17 21:09:07,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269771632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:07,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:07,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:07,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069442950] [2021-12-17 21:09:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:07,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:07,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:07,108 INFO L87 Difference]: Start difference. First operand 4061 states and 6314 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:08,886 INFO L93 Difference]: Finished difference Result 14280 states and 22467 transitions. [2021-12-17 21:09:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 21:09:08,887 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:08,920 INFO L225 Difference]: With dead ends: 14280 [2021-12-17 21:09:08,920 INFO L226 Difference]: Without dead ends: 10235 [2021-12-17 21:09:08,931 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 21:09:08,932 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 986 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:08,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 2007 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 21:09:08,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2021-12-17 21:09:09,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 7874. [2021-12-17 21:09:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7874 states, 7108 states have (on average 1.5434721440630277) internal successors, (10971), 7142 states have internal predecessors, (10971), 535 states have call successors, (535), 199 states have call predecessors, (535), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-17 21:09:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 12314 transitions. [2021-12-17 21:09:09,363 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 12314 transitions. Word has length 124 [2021-12-17 21:09:09,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:09,363 INFO L470 AbstractCegarLoop]: Abstraction has 7874 states and 12314 transitions. [2021-12-17 21:09:09,364 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 12314 transitions. [2021-12-17 21:09:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:09,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:09,368 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, 1] [2021-12-17 21:09:09,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 21:09:09,368 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:09,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:09,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1370281254, now seen corresponding path program 1 times [2021-12-17 21:09:09,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:09,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693894833] [2021-12-17 21:09:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:09,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:09,450 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 21:09:09,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:09,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693894833] [2021-12-17 21:09:09,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693894833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:09,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:09,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:09,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880791773] [2021-12-17 21:09:09,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:09,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:09,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:09,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:09,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:09,452 INFO L87 Difference]: Start difference. First operand 7874 states and 12314 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:12,170 INFO L93 Difference]: Finished difference Result 31283 states and 49263 transitions. [2021-12-17 21:09:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:09:12,171 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:12,235 INFO L225 Difference]: With dead ends: 31283 [2021-12-17 21:09:12,235 INFO L226 Difference]: Without dead ends: 23425 [2021-12-17 21:09:12,305 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 21:09:12,305 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 1058 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:12,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 2112 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 21:09:12,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2021-12-17 21:09:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 15435. [2021-12-17 21:09:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15435 states, 13965 states have (on average 1.5447905477980666) internal successors, (21573), 14031 states have internal predecessors, (21573), 1015 states have call successors, (1015), 391 states have call predecessors, (1015), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-17 21:09:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15435 states to 15435 states and 24394 transitions. [2021-12-17 21:09:13,186 INFO L78 Accepts]: Start accepts. Automaton has 15435 states and 24394 transitions. Word has length 124 [2021-12-17 21:09:13,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:13,186 INFO L470 AbstractCegarLoop]: Abstraction has 15435 states and 24394 transitions. [2021-12-17 21:09:13,187 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 15435 states and 24394 transitions. [2021-12-17 21:09:13,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:13,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:13,195 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, 1] [2021-12-17 21:09:13,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 21:09:13,195 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash -536122012, now seen corresponding path program 1 times [2021-12-17 21:09:13,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:13,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572150075] [2021-12-17 21:09:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:13,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:13,273 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 21:09:13,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:13,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572150075] [2021-12-17 21:09:13,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572150075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:13,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:13,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:13,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673414479] [2021-12-17 21:09:13,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:13,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:13,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:13,275 INFO L87 Difference]: Start difference. First operand 15435 states and 24394 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:17,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:17,129 INFO L93 Difference]: Finished difference Result 60810 states and 96669 transitions. [2021-12-17 21:09:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:09:17,130 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:17,273 INFO L225 Difference]: With dead ends: 60810 [2021-12-17 21:09:17,274 INFO L226 Difference]: Without dead ends: 45391 [2021-12-17 21:09:17,317 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 21:09:17,317 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1235 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:17,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 1983 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 21:09:17,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45391 states. [2021-12-17 21:09:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45391 to 29884. [2021-12-17 21:09:18,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29884 states, 27038 states have (on average 1.5406095125379096) internal successors, (41655), 27168 states have internal predecessors, (41655), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-17 21:09:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29884 states to 29884 states and 47854 transitions. [2021-12-17 21:09:19,008 INFO L78 Accepts]: Start accepts. Automaton has 29884 states and 47854 transitions. Word has length 124 [2021-12-17 21:09:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:19,009 INFO L470 AbstractCegarLoop]: Abstraction has 29884 states and 47854 transitions. [2021-12-17 21:09:19,009 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 29884 states and 47854 transitions. [2021-12-17 21:09:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:19,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:19,024 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, 1] [2021-12-17 21:09:19,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 21:09:19,025 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1064949094, now seen corresponding path program 1 times [2021-12-17 21:09:19,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:19,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353817419] [2021-12-17 21:09:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:19,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:19,109 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 21:09:19,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:19,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353817419] [2021-12-17 21:09:19,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353817419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:19,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:19,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:19,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544783551] [2021-12-17 21:09:19,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:19,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:19,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:19,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:19,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:19,112 INFO L87 Difference]: Start difference. First operand 29884 states and 47854 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:21,764 INFO L93 Difference]: Finished difference Result 68701 states and 112153 transitions. [2021-12-17 21:09:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:09:21,765 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:21,896 INFO L225 Difference]: With dead ends: 68701 [2021-12-17 21:09:21,896 INFO L226 Difference]: Without dead ends: 38833 [2021-12-17 21:09:21,966 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 21:09:21,967 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 832 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:21,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 906 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 21:09:21,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38833 states. [2021-12-17 21:09:23,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38833 to 29884. [2021-12-17 21:09:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29884 states, 27038 states have (on average 1.5358384495894666) internal successors, (41526), 27168 states have internal predecessors, (41526), 1943 states have call successors, (1943), 775 states have call predecessors, (1943), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-17 21:09:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29884 states to 29884 states and 47725 transitions. [2021-12-17 21:09:23,775 INFO L78 Accepts]: Start accepts. Automaton has 29884 states and 47725 transitions. Word has length 124 [2021-12-17 21:09:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:23,775 INFO L470 AbstractCegarLoop]: Abstraction has 29884 states and 47725 transitions. [2021-12-17 21:09:23,776 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 29884 states and 47725 transitions. [2021-12-17 21:09:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:23,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:23,791 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, 1] [2021-12-17 21:09:23,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 21:09:23,791 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:23,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:23,792 INFO L85 PathProgramCache]: Analyzing trace with hash 8217892, now seen corresponding path program 1 times [2021-12-17 21:09:23,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:23,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690168780] [2021-12-17 21:09:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:23,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:23,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:23,872 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 21:09:23,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:23,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690168780] [2021-12-17 21:09:23,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690168780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:23,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:23,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:23,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163799387] [2021-12-17 21:09:23,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:23,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:23,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:23,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:23,874 INFO L87 Difference]: Start difference. First operand 29884 states and 47725 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:30,076 INFO L93 Difference]: Finished difference Result 114839 states and 184555 transitions. [2021-12-17 21:09:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 21:09:30,077 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:30,343 INFO L225 Difference]: With dead ends: 114839 [2021-12-17 21:09:30,343 INFO L226 Difference]: Without dead ends: 84971 [2021-12-17 21:09:30,413 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 21:09:30,414 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 1213 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:30,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 1379 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 21:09:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84971 states. [2021-12-17 21:09:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84971 to 59486. [2021-12-17 21:09:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59486 states, 53952 states have (on average 1.5366622182680902) internal successors, (82906), 54210 states have internal predecessors, (82906), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2021-12-17 21:09:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59486 states to 59486 states and 97191 transitions. [2021-12-17 21:09:33,816 INFO L78 Accepts]: Start accepts. Automaton has 59486 states and 97191 transitions. Word has length 124 [2021-12-17 21:09:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:33,817 INFO L470 AbstractCegarLoop]: Abstraction has 59486 states and 97191 transitions. [2021-12-17 21:09:33,817 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 59486 states and 97191 transitions. [2021-12-17 21:09:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:33,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:33,843 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, 1] [2021-12-17 21:09:33,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 21:09:33,844 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1359603110, now seen corresponding path program 1 times [2021-12-17 21:09:33,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:33,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141468723] [2021-12-17 21:09:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:33,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:33,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:33,923 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 21:09:33,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:33,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141468723] [2021-12-17 21:09:33,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141468723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:33,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:33,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:33,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77671226] [2021-12-17 21:09:33,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:33,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:33,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:33,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:33,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:33,926 INFO L87 Difference]: Start difference. First operand 59486 states and 97191 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:38,587 INFO L93 Difference]: Finished difference Result 135579 states and 226708 transitions. [2021-12-17 21:09:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:09:38,587 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:38,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:38,871 INFO L225 Difference]: With dead ends: 135579 [2021-12-17 21:09:38,871 INFO L226 Difference]: Without dead ends: 76109 [2021-12-17 21:09:38,990 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 21:09:38,991 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 725 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:38,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1034 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 21:09:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76109 states. [2021-12-17 21:09:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76109 to 59486. [2021-12-17 21:09:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59486 states, 53952 states have (on average 1.531898724792408) internal successors, (82649), 54210 states have internal predecessors, (82649), 3735 states have call successors, (3735), 1543 states have call predecessors, (3735), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2021-12-17 21:09:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59486 states to 59486 states and 96934 transitions. [2021-12-17 21:09:42,752 INFO L78 Accepts]: Start accepts. Automaton has 59486 states and 96934 transitions. Word has length 124 [2021-12-17 21:09:42,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 21:09:42,752 INFO L470 AbstractCegarLoop]: Abstraction has 59486 states and 96934 transitions. [2021-12-17 21:09:42,752 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 59486 states and 96934 transitions. [2021-12-17 21:09:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 21:09:42,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 21:09:42,782 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, 1] [2021-12-17 21:09:42,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 21:09:42,783 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 21:09:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 21:09:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 476094120, now seen corresponding path program 1 times [2021-12-17 21:09:42,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 21:09:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747754939] [2021-12-17 21:09:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 21:09:42,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 21:09:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 21:09:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:42,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 21:09:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:42,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 21:09:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 21:09:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 21:09:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 21:09:42,859 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 21:09:42,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 21:09:42,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747754939] [2021-12-17 21:09:42,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747754939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 21:09:42,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 21:09:42,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 21:09:42,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786786188] [2021-12-17 21:09:42,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 21:09:42,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 21:09:42,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 21:09:42,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 21:09:42,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 21:09:42,861 INFO L87 Difference]: Start difference. First operand 59486 states and 96934 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 21:09:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 21:09:47,963 INFO L93 Difference]: Finished difference Result 135321 states and 225421 transitions. [2021-12-17 21:09:47,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 21:09:47,965 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-12-17 21:09:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 21:09:48,187 INFO L225 Difference]: With dead ends: 135321 [2021-12-17 21:09:48,187 INFO L226 Difference]: Without dead ends: 75851 [2021-12-17 21:09:48,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 21:09:48,291 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 723 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 21:09:48,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1030 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 21:09:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75851 states.