./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 [2021-12-16 02:34:08,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:34:08,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:34:08,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:34:08,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:34:08,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:34:08,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:34:08,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:34:08,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:34:08,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:34:08,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:34:08,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:34:08,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:34:08,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:34:08,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:34:08,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:34:08,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:34:08,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:34:08,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:34:08,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:34:08,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:34:08,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:34:08,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:34:08,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:34:08,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:34:08,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:34:08,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:34:08,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:34:08,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:34:08,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:34:08,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:34:08,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:34:08,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:34:08,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:34:08,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:34:08,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:34:08,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:34:08,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:34:08,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:34:08,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:34:08,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:34:08,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:34:08,215 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:34:08,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:34:08,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:34:08,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:34:08,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:34:08,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:34:08,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:34:08,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:34:08,217 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:34:08,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:34:08,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:34:08,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:34:08,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:34:08,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:34:08,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:34:08,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:34:08,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:34:08,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:34:08,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:34:08,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:34:08,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:34:08,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:34:08,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:34:08,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:34:08,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:34:08,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:34:08,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:34:08,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:34:08,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:34:08,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:34:08,221 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:34:08,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:34:08,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:34:08,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:34:08,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af [2021-12-16 02:34:08,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:34:08,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:34:08,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:34:08,515 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:34:08,516 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:34:08,517 INFO L432 ainManager$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 [2021-12-16 02:34:08,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5f2f2e1/58b94d08f6214d93927e4f746035445e/FLAGe885eb635 [2021-12-16 02:34:08,971 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:34:08,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-16 02:34:08,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5f2f2e1/58b94d08f6214d93927e4f746035445e/FLAGe885eb635 [2021-12-16 02:34:09,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf5f2f2e1/58b94d08f6214d93927e4f746035445e [2021-12-16 02:34:09,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:34:09,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:34:09,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:34:09,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:34:09,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:34:09,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7ae366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09, skipping insertion in model container [2021-12-16 02:34:09,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:34:09,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:34:09,473 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] [2021-12-16 02:34:09,586 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] [2021-12-16 02:34:09,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:34:09,673 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:34:09,680 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] [2021-12-16 02:34:09,701 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] [2021-12-16 02:34:09,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:34:09,751 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:34:09,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09 WrapperNode [2021-12-16 02:34:09,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:34:09,753 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:34:09,753 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:34:09,753 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:34:09,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,830 INFO L137 Inliner]: procedures = 69, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 793 [2021-12-16 02:34:09,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:34:09,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:34:09,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:34:09,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:34:09,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:34:09,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:34:09,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:34:09,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:34:09,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (1/1) ... [2021-12-16 02:34:09,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:34:09,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:34:09,914 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) [2021-12-16 02:34:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:34:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:34:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:34:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-16 02:34:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-16 02:34:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-16 02:34:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-16 02:34:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-16 02:34:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-16 02:34:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-16 02:34:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-16 02:34:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-16 02:34:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-16 02:34:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-16 02:34:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-16 02:34:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-16 02:34:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-16 02:34:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-16 02:34:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-16 02:34:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-16 02:34:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-16 02:34:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-16 02:34:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-16 02:34:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:34:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-16 02:34:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-16 02:34:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-16 02:34:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-16 02:34:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:34:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:34:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-16 02:34:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-16 02:34:09,942 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-16 02:34:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-16 02:34:09,944 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 [2021-12-16 02:34:10,031 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:34:10,033 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:34:10,509 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-16 02:34:10,510 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; [2021-12-16 02:34:10,548 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:34:10,556 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:34:10,556 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-16 02:34:10,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:34:10 BoogieIcfgContainer [2021-12-16 02:34:10,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:34:10,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:34:10,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:34:10,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:34:10,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:34:09" (1/3) ... [2021-12-16 02:34:10,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63208466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:34:10, skipping insertion in model container [2021-12-16 02:34:10,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:34:09" (2/3) ... [2021-12-16 02:34:10,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63208466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:34:10, skipping insertion in model container [2021-12-16 02:34:10,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:34:10" (3/3) ... [2021-12-16 02:34:10,564 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2021-12-16 02:34:10,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:34:10,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:34:10,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:34:10,604 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 [2021-12-16 02:34:10,604 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:34:10,633 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) [2021-12-16 02:34:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:34:10,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:10,641 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] [2021-12-16 02:34:10,642 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:10,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1097425506, now seen corresponding path program 1 times [2021-12-16 02:34:10,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:10,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010987824] [2021-12-16 02:34:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:10,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:34:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:34:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:10,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:10,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010987824] [2021-12-16 02:34:10,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010987824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:10,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:10,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:34:10,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70653176] [2021-12-16 02:34:10,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:10,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:34:10,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:11,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:34:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:34:11,032 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) [2021-12-16 02:34:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:11,660 INFO L93 Difference]: Finished difference Result 758 states and 1198 transitions. [2021-12-16 02:34:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 02:34:11,663 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 [2021-12-16 02:34:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:11,681 INFO L225 Difference]: With dead ends: 758 [2021-12-16 02:34:11,681 INFO L226 Difference]: Without dead ends: 389 [2021-12-16 02:34:11,688 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 [2021-12-16 02:34:11,691 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, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:11,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1583 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 02:34:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-16 02:34:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2021-12-16 02:34:11,752 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) [2021-12-16 02:34:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 559 transitions. [2021-12-16 02:34:11,756 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 559 transitions. Word has length 65 [2021-12-16 02:34:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:11,756 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 559 transitions. [2021-12-16 02:34:11,757 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) [2021-12-16 02:34:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 559 transitions. [2021-12-16 02:34:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:34:11,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:11,761 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] [2021-12-16 02:34:11,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:34:11,761 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:11,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1810756380, now seen corresponding path program 1 times [2021-12-16 02:34:11,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:11,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992452366] [2021-12-16 02:34:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:11,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:34:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:34:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:11,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:11,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992452366] [2021-12-16 02:34:11,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992452366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:11,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:11,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:34:11,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79545399] [2021-12-16 02:34:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:11,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:34:11,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:34:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:11,887 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) [2021-12-16 02:34:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:12,585 INFO L93 Difference]: Finished difference Result 626 states and 928 transitions. [2021-12-16 02:34:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:12,585 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 [2021-12-16 02:34:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:12,588 INFO L225 Difference]: With dead ends: 626 [2021-12-16 02:34:12,588 INFO L226 Difference]: Without dead ends: 522 [2021-12-16 02:34:12,589 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 [2021-12-16 02:34:12,590 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 [2021-12-16 02:34:12,590 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] [2021-12-16 02:34:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-12-16 02:34:12,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 483. [2021-12-16 02:34:12,615 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) [2021-12-16 02:34:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2021-12-16 02:34:12,618 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 65 [2021-12-16 02:34:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:12,618 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2021-12-16 02:34:12,618 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) [2021-12-16 02:34:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2021-12-16 02:34:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:34:12,620 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:12,620 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] [2021-12-16 02:34:12,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:34:12,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:12,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash -805322276, now seen corresponding path program 1 times [2021-12-16 02:34:12,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:12,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920417235] [2021-12-16 02:34:12,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:12,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:34:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:34:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:12,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:12,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:12,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920417235] [2021-12-16 02:34:12,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920417235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:12,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:12,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:34:12,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308739775] [2021-12-16 02:34:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:12,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:34:12,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:34:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:34:12,769 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) [2021-12-16 02:34:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:13,522 INFO L93 Difference]: Finished difference Result 880 states and 1281 transitions. [2021-12-16 02:34:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 02:34:13,522 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 [2021-12-16 02:34:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:13,526 INFO L225 Difference]: With dead ends: 880 [2021-12-16 02:34:13,526 INFO L226 Difference]: Without dead ends: 671 [2021-12-16 02:34:13,527 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 [2021-12-16 02:34:13,528 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1070 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:13,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 2343 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:34:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-12-16 02:34:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 595. [2021-12-16 02:34:13,556 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) [2021-12-16 02:34:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 875 transitions. [2021-12-16 02:34:13,558 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 875 transitions. Word has length 65 [2021-12-16 02:34:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:13,559 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 875 transitions. [2021-12-16 02:34:13,559 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) [2021-12-16 02:34:13,559 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 875 transitions. [2021-12-16 02:34:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-16 02:34:13,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:13,561 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] [2021-12-16 02:34:13,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:34:13,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:13,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1461058910, now seen corresponding path program 1 times [2021-12-16 02:34:13,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:13,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402615762] [2021-12-16 02:34:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:13,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 02:34:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 02:34:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 02:34:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:13,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402615762] [2021-12-16 02:34:13,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402615762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:13,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:13,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:13,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124033834] [2021-12-16 02:34:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:13,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:13,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:13,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:13,632 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) [2021-12-16 02:34:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:14,157 INFO L93 Difference]: Finished difference Result 1267 states and 1817 transitions. [2021-12-16 02:34:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 02:34:14,158 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 [2021-12-16 02:34:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:14,162 INFO L225 Difference]: With dead ends: 1267 [2021-12-16 02:34:14,163 INFO L226 Difference]: Without dead ends: 952 [2021-12-16 02:34:14,164 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 [2021-12-16 02:34:14,165 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, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:14,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1544 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 02:34:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-12-16 02:34:14,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 876. [2021-12-16 02:34:14,225 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) [2021-12-16 02:34:14,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1250 transitions. [2021-12-16 02:34:14,229 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1250 transitions. Word has length 65 [2021-12-16 02:34:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:14,229 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1250 transitions. [2021-12-16 02:34:14,229 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) [2021-12-16 02:34:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1250 transitions. [2021-12-16 02:34:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 02:34:14,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:14,231 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] [2021-12-16 02:34:14,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:34:14,231 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1639333971, now seen corresponding path program 1 times [2021-12-16 02:34:14,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:14,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116843162] [2021-12-16 02:34:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:14,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 02:34:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 02:34:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:14,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:14,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116843162] [2021-12-16 02:34:14,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116843162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:14,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:14,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:14,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455917970] [2021-12-16 02:34:14,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:14,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:14,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:14,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:14,316 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) [2021-12-16 02:34:14,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:14,958 INFO L93 Difference]: Finished difference Result 1592 states and 2255 transitions. [2021-12-16 02:34:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 02:34:14,958 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 [2021-12-16 02:34:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:14,962 INFO L225 Difference]: With dead ends: 1592 [2021-12-16 02:34:14,963 INFO L226 Difference]: Without dead ends: 996 [2021-12-16 02:34:14,964 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 [2021-12-16 02:34:14,965 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 461 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 2651 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:14,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 2651 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 02:34:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2021-12-16 02:34:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 906. [2021-12-16 02:34:15,000 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) [2021-12-16 02:34:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1280 transitions. [2021-12-16 02:34:15,004 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1280 transitions. Word has length 66 [2021-12-16 02:34:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:15,005 INFO L470 AbstractCegarLoop]: Abstraction has 906 states and 1280 transitions. [2021-12-16 02:34:15,005 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) [2021-12-16 02:34:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1280 transitions. [2021-12-16 02:34:15,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 02:34:15,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:15,007 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] [2021-12-16 02:34:15,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:34:15,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:15,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash 253130577, now seen corresponding path program 1 times [2021-12-16 02:34:15,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:15,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044558095] [2021-12-16 02:34:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:15,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 02:34:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 02:34:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:15,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:15,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044558095] [2021-12-16 02:34:15,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044558095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:15,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:15,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:15,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707618075] [2021-12-16 02:34:15,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:15,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:15,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:15,097 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) [2021-12-16 02:34:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:15,759 INFO L93 Difference]: Finished difference Result 1616 states and 2255 transitions. [2021-12-16 02:34:15,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:34:15,760 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 [2021-12-16 02:34:15,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:15,764 INFO L225 Difference]: With dead ends: 1616 [2021-12-16 02:34:15,764 INFO L226 Difference]: Without dead ends: 990 [2021-12-16 02:34:15,765 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 [2021-12-16 02:34:15,766 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 [2021-12-16 02:34:15,766 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] [2021-12-16 02:34:15,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-12-16 02:34:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 921. [2021-12-16 02:34:15,807 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) [2021-12-16 02:34:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1292 transitions. [2021-12-16 02:34:15,813 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1292 transitions. Word has length 66 [2021-12-16 02:34:15,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:15,814 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1292 transitions. [2021-12-16 02:34:15,814 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) [2021-12-16 02:34:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1292 transitions. [2021-12-16 02:34:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 02:34:15,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:15,816 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] [2021-12-16 02:34:15,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:34:15,816 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:15,817 INFO L85 PathProgramCache]: Analyzing trace with hash -776228721, now seen corresponding path program 1 times [2021-12-16 02:34:15,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:15,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30224415] [2021-12-16 02:34:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:15,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-16 02:34:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-16 02:34:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:15,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:15,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30224415] [2021-12-16 02:34:15,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30224415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:15,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:15,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:15,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035563257] [2021-12-16 02:34:15,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:15,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:15,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:15,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:15,962 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) [2021-12-16 02:34:17,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:17,504 INFO L93 Difference]: Finished difference Result 3253 states and 4581 transitions. [2021-12-16 02:34:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-16 02:34:17,505 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 [2021-12-16 02:34:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:17,510 INFO L225 Difference]: With dead ends: 3253 [2021-12-16 02:34:17,510 INFO L226 Difference]: Without dead ends: 1307 [2021-12-16 02:34:17,515 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 [2021-12-16 02:34:17,518 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 2025 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:17,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 2717 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:34:17,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2021-12-16 02:34:17,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1144. [2021-12-16 02:34:17,553 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) [2021-12-16 02:34:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1570 transitions. [2021-12-16 02:34:17,557 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1570 transitions. Word has length 66 [2021-12-16 02:34:17,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:17,558 INFO L470 AbstractCegarLoop]: Abstraction has 1144 states and 1570 transitions. [2021-12-16 02:34:17,558 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) [2021-12-16 02:34:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1570 transitions. [2021-12-16 02:34:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 02:34:17,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:17,560 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] [2021-12-16 02:34:17,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:34:17,561 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1984786467, now seen corresponding path program 1 times [2021-12-16 02:34:17,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:17,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815035086] [2021-12-16 02:34:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:17,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 02:34:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 02:34:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-16 02:34:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 02:34:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 02:34:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:17,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815035086] [2021-12-16 02:34:17,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815035086] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:17,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:17,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 02:34:17,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087730879] [2021-12-16 02:34:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:17,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 02:34:17,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 02:34:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:34:17,645 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) [2021-12-16 02:34:18,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:18,284 INFO L93 Difference]: Finished difference Result 2329 states and 3212 transitions. [2021-12-16 02:34:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:34:18,285 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 [2021-12-16 02:34:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:18,287 INFO L225 Difference]: With dead ends: 2329 [2021-12-16 02:34:18,287 INFO L226 Difference]: Without dead ends: 260 [2021-12-16 02:34:18,290 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 [2021-12-16 02:34:18,291 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1157 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:18,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 2094 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 02:34:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-16 02:34:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-12-16 02:34:18,299 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) [2021-12-16 02:34:18,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 403 transitions. [2021-12-16 02:34:18,300 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 403 transitions. Word has length 67 [2021-12-16 02:34:18,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:18,300 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 403 transitions. [2021-12-16 02:34:18,300 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) [2021-12-16 02:34:18,301 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 403 transitions. [2021-12-16 02:34:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:18,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:18,302 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] [2021-12-16 02:34:18,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:34:18,302 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash 959549796, now seen corresponding path program 1 times [2021-12-16 02:34:18,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:18,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287251761] [2021-12-16 02:34:18,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:18,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:18,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:18,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287251761] [2021-12-16 02:34:18,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287251761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:18,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:18,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:34:18,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713103497] [2021-12-16 02:34:18,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:18,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:34:18,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:34:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:34:18,385 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) [2021-12-16 02:34:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:19,040 INFO L93 Difference]: Finished difference Result 600 states and 947 transitions. [2021-12-16 02:34:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:34:19,040 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 [2021-12-16 02:34:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:19,042 INFO L225 Difference]: With dead ends: 600 [2021-12-16 02:34:19,042 INFO L226 Difference]: Without dead ends: 347 [2021-12-16 02:34:19,043 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 [2021-12-16 02:34:19,043 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 669 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:19,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 734 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:34:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-16 02:34:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 260. [2021-12-16 02:34:19,052 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) [2021-12-16 02:34:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 402 transitions. [2021-12-16 02:34:19,053 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 402 transitions. Word has length 124 [2021-12-16 02:34:19,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:19,054 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 402 transitions. [2021-12-16 02:34:19,054 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) [2021-12-16 02:34:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 402 transitions. [2021-12-16 02:34:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:19,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:19,055 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] [2021-12-16 02:34:19,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:34:19,055 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1292192934, now seen corresponding path program 1 times [2021-12-16 02:34:19,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:19,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898540401] [2021-12-16 02:34:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:19,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:19,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:19,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898540401] [2021-12-16 02:34:19,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898540401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:19,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:19,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:34:19,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815894004] [2021-12-16 02:34:19,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:19,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:34:19,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:19,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:34:19,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:34:19,139 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) [2021-12-16 02:34:20,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:20,426 INFO L93 Difference]: Finished difference Result 930 states and 1473 transitions. [2021-12-16 02:34:20,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:34:20,427 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 [2021-12-16 02:34:20,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:20,429 INFO L225 Difference]: With dead ends: 930 [2021-12-16 02:34:20,429 INFO L226 Difference]: Without dead ends: 686 [2021-12-16 02:34:20,430 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 [2021-12-16 02:34:20,430 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 994 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:20,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1188 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:34:20,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-16 02:34:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 511. [2021-12-16 02:34:20,462 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) [2021-12-16 02:34:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 798 transitions. [2021-12-16 02:34:20,464 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 798 transitions. Word has length 124 [2021-12-16 02:34:20,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:20,464 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 798 transitions. [2021-12-16 02:34:20,464 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) [2021-12-16 02:34:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 798 transitions. [2021-12-16 02:34:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:20,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:20,465 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] [2021-12-16 02:34:20,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:34:20,465 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 274544546, now seen corresponding path program 1 times [2021-12-16 02:34:20,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:20,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857577212] [2021-12-16 02:34:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:20,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:20,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:20,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:20,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:20,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857577212] [2021-12-16 02:34:20,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857577212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:20,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:20,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:20,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836975646] [2021-12-16 02:34:20,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:20,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:20,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:20,571 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) [2021-12-16 02:34:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:22,137 INFO L93 Difference]: Finished difference Result 1528 states and 2422 transitions. [2021-12-16 02:34:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:22,138 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 [2021-12-16 02:34:22,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:22,143 INFO L225 Difference]: With dead ends: 1528 [2021-12-16 02:34:22,143 INFO L226 Difference]: Without dead ends: 1033 [2021-12-16 02:34:22,145 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 [2021-12-16 02:34:22,146 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1001 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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 [2021-12-16 02:34:22,146 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] [2021-12-16 02:34:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-12-16 02:34:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 745. [2021-12-16 02:34:22,188 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) [2021-12-16 02:34:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1159 transitions. [2021-12-16 02:34:22,195 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1159 transitions. Word has length 124 [2021-12-16 02:34:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:22,196 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1159 transitions. [2021-12-16 02:34:22,196 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) [2021-12-16 02:34:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1159 transitions. [2021-12-16 02:34:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:22,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:22,197 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] [2021-12-16 02:34:22,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:34:22,197 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:22,198 INFO L85 PathProgramCache]: Analyzing trace with hash 392986020, now seen corresponding path program 1 times [2021-12-16 02:34:22,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:22,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096207216] [2021-12-16 02:34:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:22,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:22,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:22,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:22,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:22,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:22,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096207216] [2021-12-16 02:34:22,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096207216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:22,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:22,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:22,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366249831] [2021-12-16 02:34:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:22,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:22,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:22,291 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) [2021-12-16 02:34:23,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:23,821 INFO L93 Difference]: Finished difference Result 2409 states and 3811 transitions. [2021-12-16 02:34:23,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:23,822 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 [2021-12-16 02:34:23,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:23,833 INFO L225 Difference]: With dead ends: 2409 [2021-12-16 02:34:23,833 INFO L226 Difference]: Without dead ends: 1680 [2021-12-16 02:34:23,835 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 [2021-12-16 02:34:23,836 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 998 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1964 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:23,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 2033 Invalid, 2036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1964 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:34:23,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2021-12-16 02:34:23,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1214. [2021-12-16 02:34:23,899 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) [2021-12-16 02:34:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1886 transitions. [2021-12-16 02:34:23,902 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1886 transitions. Word has length 124 [2021-12-16 02:34:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:23,902 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1886 transitions. [2021-12-16 02:34:23,903 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) [2021-12-16 02:34:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1886 transitions. [2021-12-16 02:34:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:23,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:23,904 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] [2021-12-16 02:34:23,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:34:23,904 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1782280034, now seen corresponding path program 1 times [2021-12-16 02:34:23,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:23,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455827379] [2021-12-16 02:34:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:23,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:24,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:24,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455827379] [2021-12-16 02:34:24,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455827379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:24,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:24,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:24,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130919807] [2021-12-16 02:34:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:24,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:24,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:24,005 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) [2021-12-16 02:34:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:24,804 INFO L93 Difference]: Finished difference Result 2866 states and 4529 transitions. [2021-12-16 02:34:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:24,804 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 [2021-12-16 02:34:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:24,811 INFO L225 Difference]: With dead ends: 2866 [2021-12-16 02:34:24,812 INFO L226 Difference]: Without dead ends: 1668 [2021-12-16 02:34:24,815 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 [2021-12-16 02:34:24,817 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 883 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:24,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [898 Valid, 902 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:34:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-12-16 02:34:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1214. [2021-12-16 02:34:24,894 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) [2021-12-16 02:34:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1881 transitions. [2021-12-16 02:34:24,898 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1881 transitions. Word has length 124 [2021-12-16 02:34:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:24,898 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1881 transitions. [2021-12-16 02:34:24,899 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) [2021-12-16 02:34:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1881 transitions. [2021-12-16 02:34:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:24,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:24,900 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] [2021-12-16 02:34:24,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:34:24,901 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:24,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:24,901 INFO L85 PathProgramCache]: Analyzing trace with hash -251114012, now seen corresponding path program 1 times [2021-12-16 02:34:24,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:24,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901098944] [2021-12-16 02:34:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:24,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:24,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:24,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901098944] [2021-12-16 02:34:24,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901098944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:24,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:24,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:24,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107241811] [2021-12-16 02:34:24,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:24,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:24,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:24,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:24,998 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) [2021-12-16 02:34:26,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:26,604 INFO L93 Difference]: Finished difference Result 4095 states and 6432 transitions. [2021-12-16 02:34:26,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:26,605 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 [2021-12-16 02:34:26,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:26,639 INFO L225 Difference]: With dead ends: 4095 [2021-12-16 02:34:26,639 INFO L226 Difference]: Without dead ends: 2897 [2021-12-16 02:34:26,642 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 [2021-12-16 02:34:26,642 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 988 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1923 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:26,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 2017 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1923 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:34:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-12-16 02:34:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2162. [2021-12-16 02:34:26,722 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) [2021-12-16 02:34:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3352 transitions. [2021-12-16 02:34:26,726 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3352 transitions. Word has length 124 [2021-12-16 02:34:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:26,727 INFO L470 AbstractCegarLoop]: Abstraction has 2162 states and 3352 transitions. [2021-12-16 02:34:26,727 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) [2021-12-16 02:34:26,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3352 transitions. [2021-12-16 02:34:26,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:26,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:26,729 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] [2021-12-16 02:34:26,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:34:26,729 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1558256410, now seen corresponding path program 1 times [2021-12-16 02:34:26,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:26,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637987336] [2021-12-16 02:34:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:26,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:26,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:26,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:26,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637987336] [2021-12-16 02:34:26,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637987336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:26,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:26,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:26,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044069362] [2021-12-16 02:34:26,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:26,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:26,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:26,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:26,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:26,824 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) [2021-12-16 02:34:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:28,465 INFO L93 Difference]: Finished difference Result 7491 states and 11759 transitions. [2021-12-16 02:34:28,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:28,465 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 [2021-12-16 02:34:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:28,497 INFO L225 Difference]: With dead ends: 7491 [2021-12-16 02:34:28,497 INFO L226 Difference]: Without dead ends: 5345 [2021-12-16 02:34:28,506 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 [2021-12-16 02:34:28,508 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 987 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:28,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 2012 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:34:28,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2021-12-16 02:34:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 4061. [2021-12-16 02:34:28,755 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) [2021-12-16 02:34:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 6314 transitions. [2021-12-16 02:34:28,764 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 6314 transitions. Word has length 124 [2021-12-16 02:34:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:28,764 INFO L470 AbstractCegarLoop]: Abstraction has 4061 states and 6314 transitions. [2021-12-16 02:34:28,764 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) [2021-12-16 02:34:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 6314 transitions. [2021-12-16 02:34:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:28,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:28,768 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] [2021-12-16 02:34:28,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:34:28,768 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash 339240356, now seen corresponding path program 1 times [2021-12-16 02:34:28,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:28,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139363651] [2021-12-16 02:34:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:28,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:28,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:28,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:28,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139363651] [2021-12-16 02:34:28,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139363651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:28,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:28,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:28,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692849534] [2021-12-16 02:34:28,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:28,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:28,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:28,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:28,872 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) [2021-12-16 02:34:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:30,530 INFO L93 Difference]: Finished difference Result 14280 states and 22467 transitions. [2021-12-16 02:34:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:34:30,531 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 [2021-12-16 02:34:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:30,586 INFO L225 Difference]: With dead ends: 14280 [2021-12-16 02:34:30,586 INFO L226 Difference]: Without dead ends: 10235 [2021-12-16 02:34:30,600 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 [2021-12-16 02:34:30,600 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 986 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:30,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 2007 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:34:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10235 states. [2021-12-16 02:34:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10235 to 7874. [2021-12-16 02:34:31,028 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) [2021-12-16 02:34:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7874 states to 7874 states and 12314 transitions. [2021-12-16 02:34:31,050 INFO L78 Accepts]: Start accepts. Automaton has 7874 states and 12314 transitions. Word has length 124 [2021-12-16 02:34:31,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:31,051 INFO L470 AbstractCegarLoop]: Abstraction has 7874 states and 12314 transitions. [2021-12-16 02:34:31,051 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) [2021-12-16 02:34:31,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7874 states and 12314 transitions. [2021-12-16 02:34:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:31,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:31,060 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] [2021-12-16 02:34:31,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:34:31,061 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:31,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:31,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1370281254, now seen corresponding path program 1 times [2021-12-16 02:34:31,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:31,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094944247] [2021-12-16 02:34:31,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:31,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:31,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:31,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094944247] [2021-12-16 02:34:31,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094944247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:31,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:31,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:31,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677511913] [2021-12-16 02:34:31,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:31,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:31,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:31,148 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) [2021-12-16 02:34:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:33,844 INFO L93 Difference]: Finished difference Result 31283 states and 49263 transitions. [2021-12-16 02:34:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:33,844 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 [2021-12-16 02:34:33,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:33,917 INFO L225 Difference]: With dead ends: 31283 [2021-12-16 02:34:33,917 INFO L226 Difference]: Without dead ends: 23425 [2021-12-16 02:34:33,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:34:33,943 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, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:33,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 2112 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:34:33,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23425 states. [2021-12-16 02:34:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23425 to 15435. [2021-12-16 02:34:34,976 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) [2021-12-16 02:34:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15435 states to 15435 states and 24394 transitions. [2021-12-16 02:34:35,024 INFO L78 Accepts]: Start accepts. Automaton has 15435 states and 24394 transitions. Word has length 124 [2021-12-16 02:34:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:35,024 INFO L470 AbstractCegarLoop]: Abstraction has 15435 states and 24394 transitions. [2021-12-16 02:34:35,024 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) [2021-12-16 02:34:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15435 states and 24394 transitions. [2021-12-16 02:34:35,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:35,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:35,037 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] [2021-12-16 02:34:35,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:34:35,037 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:35,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash -536122012, now seen corresponding path program 1 times [2021-12-16 02:34:35,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:35,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318154481] [2021-12-16 02:34:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:35,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:35,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:35,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318154481] [2021-12-16 02:34:35,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318154481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:35,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:35,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:35,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639941358] [2021-12-16 02:34:35,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:35,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:35,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:35,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:35,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:35,139 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) [2021-12-16 02:34:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:38,975 INFO L93 Difference]: Finished difference Result 60810 states and 96669 transitions. [2021-12-16 02:34:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:38,976 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 [2021-12-16 02:34:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:39,226 INFO L225 Difference]: With dead ends: 60810 [2021-12-16 02:34:39,227 INFO L226 Difference]: Without dead ends: 45391 [2021-12-16 02:34:39,278 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 [2021-12-16 02:34:39,279 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 1235 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:39,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 1983 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:34:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45391 states. [2021-12-16 02:34:40,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45391 to 29884. [2021-12-16 02:34:40,943 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) [2021-12-16 02:34:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29884 states to 29884 states and 47854 transitions. [2021-12-16 02:34:41,038 INFO L78 Accepts]: Start accepts. Automaton has 29884 states and 47854 transitions. Word has length 124 [2021-12-16 02:34:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:41,039 INFO L470 AbstractCegarLoop]: Abstraction has 29884 states and 47854 transitions. [2021-12-16 02:34:41,039 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) [2021-12-16 02:34:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 29884 states and 47854 transitions. [2021-12-16 02:34:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:41,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:41,062 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] [2021-12-16 02:34:41,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:34:41,062 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:41,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1064949094, now seen corresponding path program 1 times [2021-12-16 02:34:41,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:41,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840220973] [2021-12-16 02:34:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:41,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:41,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:41,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:41,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840220973] [2021-12-16 02:34:41,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840220973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:41,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:41,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:41,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437829922] [2021-12-16 02:34:41,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:41,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:41,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:41,181 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) [2021-12-16 02:34:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:44,148 INFO L93 Difference]: Finished difference Result 68701 states and 112153 transitions. [2021-12-16 02:34:44,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:34:44,149 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 [2021-12-16 02:34:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:44,267 INFO L225 Difference]: With dead ends: 68701 [2021-12-16 02:34:44,268 INFO L226 Difference]: Without dead ends: 38833 [2021-12-16 02:34:44,326 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 [2021-12-16 02:34:44,326 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 832 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:44,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 906 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:34:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38833 states. [2021-12-16 02:34:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38833 to 29884. [2021-12-16 02:34:45,940 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) [2021-12-16 02:34:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29884 states to 29884 states and 47725 transitions. [2021-12-16 02:34:46,040 INFO L78 Accepts]: Start accepts. Automaton has 29884 states and 47725 transitions. Word has length 124 [2021-12-16 02:34:46,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:46,041 INFO L470 AbstractCegarLoop]: Abstraction has 29884 states and 47725 transitions. [2021-12-16 02:34:46,041 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) [2021-12-16 02:34:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 29884 states and 47725 transitions. [2021-12-16 02:34:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:46,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:46,059 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] [2021-12-16 02:34:46,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:34:46,059 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash 8217892, now seen corresponding path program 1 times [2021-12-16 02:34:46,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571019158] [2021-12-16 02:34:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:46,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:46,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:46,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:46,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571019158] [2021-12-16 02:34:46,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571019158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:46,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:46,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:46,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563328957] [2021-12-16 02:34:46,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:46,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:46,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:46,145 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) [2021-12-16 02:34:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:34:52,435 INFO L93 Difference]: Finished difference Result 114839 states and 184555 transitions. [2021-12-16 02:34:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:34:52,435 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 [2021-12-16 02:34:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:34:52,735 INFO L225 Difference]: With dead ends: 114839 [2021-12-16 02:34:52,735 INFO L226 Difference]: Without dead ends: 84971 [2021-12-16 02:34:52,863 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 [2021-12-16 02:34:52,864 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, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:34:52,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 1379 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:34:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84971 states. [2021-12-16 02:34:56,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84971 to 59486. [2021-12-16 02:34:56,264 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) [2021-12-16 02:34:56,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59486 states to 59486 states and 97191 transitions. [2021-12-16 02:34:56,459 INFO L78 Accepts]: Start accepts. Automaton has 59486 states and 97191 transitions. Word has length 124 [2021-12-16 02:34:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:34:56,460 INFO L470 AbstractCegarLoop]: Abstraction has 59486 states and 97191 transitions. [2021-12-16 02:34:56,460 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) [2021-12-16 02:34:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 59486 states and 97191 transitions. [2021-12-16 02:34:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:34:56,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:34:56,494 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] [2021-12-16 02:34:56,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 02:34:56,495 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:34:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:34:56,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1359603110, now seen corresponding path program 1 times [2021-12-16 02:34:56,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:34:56,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737815084] [2021-12-16 02:34:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:34:56,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:34:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:56,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:34:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:34:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:34:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:34:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:34:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:34:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:34:56,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:34:56,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737815084] [2021-12-16 02:34:56,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737815084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:34:56,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:34:56,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:34:56,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32525576] [2021-12-16 02:34:56,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:34:56,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:34:56,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:34:56,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:34:56,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:34:56,573 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) [2021-12-16 02:35:01,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:35:01,649 INFO L93 Difference]: Finished difference Result 135579 states and 226708 transitions. [2021-12-16 02:35:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:35:01,650 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 [2021-12-16 02:35:01,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:35:02,093 INFO L225 Difference]: With dead ends: 135579 [2021-12-16 02:35:02,093 INFO L226 Difference]: Without dead ends: 76109 [2021-12-16 02:35:02,196 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 [2021-12-16 02:35:02,198 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 725 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:35:02,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 1034 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:35:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76109 states. [2021-12-16 02:35:05,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76109 to 59486. [2021-12-16 02:35:05,987 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) [2021-12-16 02:35:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59486 states to 59486 states and 96934 transitions. [2021-12-16 02:35:06,329 INFO L78 Accepts]: Start accepts. Automaton has 59486 states and 96934 transitions. Word has length 124 [2021-12-16 02:35:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:35:06,330 INFO L470 AbstractCegarLoop]: Abstraction has 59486 states and 96934 transitions. [2021-12-16 02:35:06,330 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) [2021-12-16 02:35:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 59486 states and 96934 transitions. [2021-12-16 02:35:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 02:35:06,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:35:06,360 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] [2021-12-16 02:35:06,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 02:35:06,360 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:35:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:35:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash 476094120, now seen corresponding path program 1 times [2021-12-16 02:35:06,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:35:06,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612948156] [2021-12-16 02:35:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:35:06,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:35:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:35:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:35:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:35:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:35:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:06,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:35:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:35:06,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:35:06,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:35:06,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612948156] [2021-12-16 02:35:06,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612948156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:35:06,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:35:06,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:35:06,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178764144] [2021-12-16 02:35:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:35:06,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:35:06,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:35:06,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:35:06,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:35:06,438 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)