./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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.15.cil.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 af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:54:47,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:54:47,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:54:47,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:54:47,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:54:47,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:54:47,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:54:47,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:54:47,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:54:47,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:54:47,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:54:47,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:54:47,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:54:47,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:54:47,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:54:47,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:54:47,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:54:47,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:54:47,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:54:47,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:54:47,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:54:47,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:54:47,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:54:47,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:54:47,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:54:47,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:54:47,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:54:47,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:54:47,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:54:47,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:54:47,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:54:47,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:54:47,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:54:47,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:54:47,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:54:47,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:54:47,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:54:47,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:54:47,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:54:47,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:54:47,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:54:47,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:54:47,599 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:54:47,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:54:47,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:54:47,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:54:47,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:54:47,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:54:47,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:54:47,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:54:47,602 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:54:47,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:54:47,603 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:54:47,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:54:47,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:54:47,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:54:47,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:54:47,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:54:47,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:54:47,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:54:47,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:54:47,604 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:54:47,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:54:47,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:54:47,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:54:47,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:54:47,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:54:47,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:54:47,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:54:47,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:54:47,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:54:47,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:54:47,606 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:54:47,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:54:47,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:54:47,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:54:47,607 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af1a65b4dba99a03062f9c0ef0e7df0ff9812521932f446bc475a13832d55c02 [2021-12-21 14:54:47,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:54:47,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:54:47,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:54:47,833 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:54:47,833 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:54:47,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-21 14:54:47,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c652ab04/55ad1a80666a4a13abdc0066f11a89b3/FLAG4ca9633c5 [2021-12-21 14:54:48,229 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:54:48,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-21 14:54:48,249 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c652ab04/55ad1a80666a4a13abdc0066f11a89b3/FLAG4ca9633c5 [2021-12-21 14:54:48,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c652ab04/55ad1a80666a4a13abdc0066f11a89b3 [2021-12-21 14:54:48,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:54:48,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:54:48,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:54:48,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:54:48,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:54:48,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:54:48" (1/1) ... [2021-12-21 14:54:48,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7494afcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:48, skipping insertion in model container [2021-12-21 14:54:48,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:54:48" (1/1) ... [2021-12-21 14:54:48,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:54:48,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:54:48,813 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.15.cil.c[911,924] [2021-12-21 14:54:48,853 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.15.cil.c[8416,8429] [2021-12-21 14:54:48,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:54:48,933 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:54:48,940 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.15.cil.c[911,924] [2021-12-21 14:54:48,953 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.15.cil.c[8416,8429] [2021-12-21 14:54:48,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:54:49,006 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:54:49,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49 WrapperNode [2021-12-21 14:54:49,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:54:49,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:54:49,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:54:49,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:54:49,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,081 INFO L137 Inliner]: procedures = 81, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1139 [2021-12-21 14:54:49,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:54:49,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:54:49,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:54:49,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:54:49,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:54:49,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:54:49,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:54:49,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:54:49,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (1/1) ... [2021-12-21 14:54:49,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:54:49,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:54:49,194 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) [2021-12-21 14:54:49,213 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 [2021-12-21 14:54:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:54:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:54:49,235 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:54:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-21 14:54:49,237 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-21 14:54:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-21 14:54:49,238 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-21 14:54:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-21 14:54:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-21 14:54:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-21 14:54:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-21 14:54:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-21 14:54:49,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-21 14:54:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-21 14:54:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-21 14:54:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-21 14:54:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-21 14:54:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-21 14:54:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-21 14:54:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-21 14:54:49,240 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-21 14:54:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-21 14:54:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-21 14:54:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:54:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-21 14:54:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-21 14:54:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-21 14:54:49,241 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-21 14:54:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:54:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:54:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-21 14:54:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-21 14:54:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-21 14:54:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-21 14:54:49,350 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:54:49,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:54:50,064 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-21 14:54:50,065 INFO L766 $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; [2021-12-21 14:54:50,134 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:54:50,142 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:54:50,142 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-21 14:54:50,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:54:50 BoogieIcfgContainer [2021-12-21 14:54:50,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:54:50,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:54:50,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:54:50,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:54:50,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:54:48" (1/3) ... [2021-12-21 14:54:50,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:54:50, skipping insertion in model container [2021-12-21 14:54:50,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:54:49" (2/3) ... [2021-12-21 14:54:50,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69df3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:54:50, skipping insertion in model container [2021-12-21 14:54:50,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:54:50" (3/3) ... [2021-12-21 14:54:50,151 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.15.cil.c [2021-12-21 14:54:50,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:54:50,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:54:50,205 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:54:50,211 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 [2021-12-21 14:54:50,212 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:54:50,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-21 14:54:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 14:54:50,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:54:50,252 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] [2021-12-21 14:54:50,253 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:54:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:54:50,257 INFO L85 PathProgramCache]: Analyzing trace with hash -103676450, now seen corresponding path program 1 times [2021-12-21 14:54:50,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:54:50,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499394953] [2021-12-21 14:54:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:54:50,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:54:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:54:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:54:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:54:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:54:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 14:54:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:54:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 14:54:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:54:50,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:54:50,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499394953] [2021-12-21 14:54:50,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499394953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:54:50,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:54:50,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 14:54:50,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827510262] [2021-12-21 14:54:50,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:54:50,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 14:54:50,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:54:50,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 14:54:50,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:54:50,593 INFO L87 Difference]: Start difference. First operand has 530 states, 467 states have (on average 1.6445396145610278) internal successors, (768), 475 states have internal predecessors, (768), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) 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) [2021-12-21 14:54:51,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:54:51,580 INFO L93 Difference]: Finished difference Result 1181 states and 1901 transitions. [2021-12-21 14:54:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:54:51,582 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 [2021-12-21 14:54:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:54:51,593 INFO L225 Difference]: With dead ends: 1181 [2021-12-21 14:54:51,594 INFO L226 Difference]: Without dead ends: 670 [2021-12-21 14:54:51,603 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 [2021-12-21 14:54:51,605 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 1720 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:54:51,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 2400 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 14:54:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-12-21 14:54:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 631. [2021-12-21 14:54:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 549 states have (on average 1.53551912568306) internal successors, (843), 556 states have internal predecessors, (843), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2021-12-21 14:54:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 960 transitions. [2021-12-21 14:54:51,676 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 960 transitions. Word has length 65 [2021-12-21 14:54:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:54:51,676 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 960 transitions. [2021-12-21 14:54:51,677 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) [2021-12-21 14:54:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 960 transitions. [2021-12-21 14:54:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 14:54:51,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:54:51,680 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] [2021-12-21 14:54:51,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:54:51,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:54:51,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:54:51,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1575212190, now seen corresponding path program 1 times [2021-12-21 14:54:51,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:54:51,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003294096] [2021-12-21 14:54:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:54:51,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:54:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:54:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:54:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:54:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:54:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 14:54:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 14:54:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 14:54:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:54:51,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:54:51,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003294096] [2021-12-21 14:54:51,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003294096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:54:51,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:54:51,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:54:51,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046328979] [2021-12-21 14:54:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:54:51,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:54:51,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:54:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:54:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:54:51,790 INFO L87 Difference]: Start difference. First operand 631 states and 960 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-21 14:54:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:54:53,680 INFO L93 Difference]: Finished difference Result 1664 states and 2420 transitions. [2021-12-21 14:54:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-21 14:54:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2021-12-21 14:54:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:54:53,692 INFO L225 Difference]: With dead ends: 1664 [2021-12-21 14:54:53,692 INFO L226 Difference]: Without dead ends: 1443 [2021-12-21 14:54:53,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-21 14:54:53,697 INFO L933 BasicCegarLoop]: 938 mSDtfsCounter, 4057 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 1893 mSolverCounterSat, 674 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 3465 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 674 IncrementalHoareTripleChecker+Valid, 1893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:54:53,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4077 Valid, 3465 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [674 Valid, 1893 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:54:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-12-21 14:54:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1304. [2021-12-21 14:54:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1092 states have (on average 1.4487179487179487) internal successors, (1582), 1107 states have internal predecessors, (1582), 129 states have call successors, (129), 75 states have call predecessors, (129), 81 states have return successors, (139), 123 states have call predecessors, (139), 125 states have call successors, (139) [2021-12-21 14:54:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1850 transitions. [2021-12-21 14:54:53,875 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1850 transitions. Word has length 65 [2021-12-21 14:54:53,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:54:53,876 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1850 transitions. [2021-12-21 14:54:53,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-21 14:54:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1850 transitions. [2021-12-21 14:54:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 14:54:53,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:54:53,881 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] [2021-12-21 14:54:53,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:54:53,881 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:54:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:54:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash -74351947, now seen corresponding path program 1 times [2021-12-21 14:54:53,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:54:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196300096] [2021-12-21 14:54:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:54:53,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:54:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:54:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:54:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:53,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:54:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:54,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:54:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:54:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 14:54:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:54,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 14:54:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:54:54,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:54:54,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196300096] [2021-12-21 14:54:54,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196300096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:54:54,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:54:54,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:54:54,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755992672] [2021-12-21 14:54:54,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:54:54,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:54:54,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:54:54,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:54:54,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:54:54,137 INFO L87 Difference]: Start difference. First operand 1304 states and 1850 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) [2021-12-21 14:54:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:54:55,145 INFO L93 Difference]: Finished difference Result 2330 states and 3244 transitions. [2021-12-21 14:54:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 14:54:55,147 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 [2021-12-21 14:54:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:54:55,152 INFO L225 Difference]: With dead ends: 2330 [2021-12-21 14:54:55,152 INFO L226 Difference]: Without dead ends: 1442 [2021-12-21 14:54:55,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:54:55,159 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 708 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 3716 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 14:54:55,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 3716 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 14:54:55,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1442 states. [2021-12-21 14:54:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1442 to 1334. [2021-12-21 14:54:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1116 states have (on average 1.4363799283154122) internal successors, (1603), 1131 states have internal predecessors, (1603), 129 states have call successors, (129), 75 states have call predecessors, (129), 87 states have return successors, (145), 129 states have call predecessors, (145), 125 states have call successors, (145) [2021-12-21 14:54:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1877 transitions. [2021-12-21 14:54:55,239 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1877 transitions. Word has length 66 [2021-12-21 14:54:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:54:55,240 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 1877 transitions. [2021-12-21 14:54:55,240 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) [2021-12-21 14:54:55,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1877 transitions. [2021-12-21 14:54:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 14:54:55,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:54:55,242 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] [2021-12-21 14:54:55,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:54:55,250 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:54:55,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:54:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1103711245, now seen corresponding path program 1 times [2021-12-21 14:54:55,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:54:55,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571046950] [2021-12-21 14:54:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:54:55,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:54:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:54:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:54:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:54:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:54:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:54:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 14:54:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 14:54:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:54:55,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:54:55,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571046950] [2021-12-21 14:54:55,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571046950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:54:55,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:54:55,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 14:54:55,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453951419] [2021-12-21 14:54:55,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:54:55,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 14:54:55,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:54:55,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 14:54:55,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-21 14:54:55,437 INFO L87 Difference]: Start difference. First operand 1334 states and 1877 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-21 14:54:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:54:57,382 INFO L93 Difference]: Finished difference Result 3672 states and 5064 transitions. [2021-12-21 14:54:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-21 14:54:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2021-12-21 14:54:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:54:57,391 INFO L225 Difference]: With dead ends: 3672 [2021-12-21 14:54:57,391 INFO L226 Difference]: Without dead ends: 1577 [2021-12-21 14:54:57,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-21 14:54:57,402 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 4112 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4132 SdHoareTripleChecker+Valid, 3488 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:54:57,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4132 Valid, 3488 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:54:57,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1577 states. [2021-12-21 14:54:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1577 to 1422. [2021-12-21 14:54:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1169 states have (on average 1.4029084687767321) internal successors, (1640), 1184 states have internal predecessors, (1640), 149 states have call successors, (149), 89 states have call predecessors, (149), 102 states have return successors, (166), 150 states have call predecessors, (166), 145 states have call successors, (166) [2021-12-21 14:54:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1955 transitions. [2021-12-21 14:54:57,467 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1955 transitions. Word has length 66 [2021-12-21 14:54:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:54:57,468 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 1955 transitions. [2021-12-21 14:54:57,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-21 14:54:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1955 transitions. [2021-12-21 14:54:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:54:57,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:54:57,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:54:57,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:54:57,471 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:54:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:54:57,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1875323271, now seen corresponding path program 1 times [2021-12-21 14:54:57,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:54:57,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488159640] [2021-12-21 14:54:57,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:54:57,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:54:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:54:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:54:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:54:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:54:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:54:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:54:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:54:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 14:54:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 14:54:57,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:54:57,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488159640] [2021-12-21 14:54:57,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488159640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:54:57,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:54:57,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:54:57,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283096967] [2021-12-21 14:54:57,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:54:57,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:54:57,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:54:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:54:57,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:54:57,636 INFO L87 Difference]: Start difference. First operand 1422 states and 1955 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2021-12-21 14:54:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:54:59,389 INFO L93 Difference]: Finished difference Result 2599 states and 3506 transitions. [2021-12-21 14:54:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 14:54:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2021-12-21 14:54:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:54:59,395 INFO L225 Difference]: With dead ends: 2599 [2021-12-21 14:54:59,396 INFO L226 Difference]: Without dead ends: 1593 [2021-12-21 14:54:59,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:54:59,399 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 700 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:54:59,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 3642 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1621 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 14:54:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-12-21 14:54:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1462. [2021-12-21 14:54:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1201 states have (on average 1.3896752706078268) internal successors, (1669), 1216 states have internal predecessors, (1669), 149 states have call successors, (149), 89 states have call predecessors, (149), 110 states have return successors, (174), 158 states have call predecessors, (174), 145 states have call successors, (174) [2021-12-21 14:54:59,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 1992 transitions. [2021-12-21 14:54:59,542 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 1992 transitions. Word has length 91 [2021-12-21 14:54:59,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:54:59,543 INFO L470 AbstractCegarLoop]: Abstraction has 1462 states and 1992 transitions. [2021-12-21 14:54:59,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2021-12-21 14:54:59,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 1992 transitions. [2021-12-21 14:54:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:54:59,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:54:59,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:54:59,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:54:59,548 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:54:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:54:59,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1975743351, now seen corresponding path program 1 times [2021-12-21 14:54:59,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:54:59,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543352550] [2021-12-21 14:54:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:54:59,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:54:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:54:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:54:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:54:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:54:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:54:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:54:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:54:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 14:54:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:54:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 14:54:59,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:54:59,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543352550] [2021-12-21 14:54:59,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543352550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:54:59,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:54:59,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 14:54:59,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836821189] [2021-12-21 14:54:59,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:54:59,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 14:54:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:54:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 14:54:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:54:59,752 INFO L87 Difference]: Start difference. First operand 1462 states and 1992 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-12-21 14:55:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:01,285 INFO L93 Difference]: Finished difference Result 3500 states and 4597 transitions. [2021-12-21 14:55:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 14:55:01,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2021-12-21 14:55:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:01,311 INFO L225 Difference]: With dead ends: 3500 [2021-12-21 14:55:01,311 INFO L226 Difference]: Without dead ends: 2455 [2021-12-21 14:55:01,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-12-21 14:55:01,314 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 1941 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:01,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 2423 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:55:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2021-12-21 14:55:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2139. [2021-12-21 14:55:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 1730 states have (on average 1.3485549132947976) internal successors, (2333), 1758 states have internal predecessors, (2333), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2021-12-21 14:55:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2845 transitions. [2021-12-21 14:55:01,442 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2845 transitions. Word has length 91 [2021-12-21 14:55:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:01,455 INFO L470 AbstractCegarLoop]: Abstraction has 2139 states and 2845 transitions. [2021-12-21 14:55:01,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2021-12-21 14:55:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2845 transitions. [2021-12-21 14:55:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:55:01,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:01,457 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:01,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:55:01,458 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash -36581305, now seen corresponding path program 1 times [2021-12-21 14:55:01,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:01,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365378891] [2021-12-21 14:55:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:01,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:55:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:55:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:55:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:55:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 14:55:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:01,608 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 14:55:01,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:01,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365378891] [2021-12-21 14:55:01,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365378891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:01,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:01,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:01,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428035441] [2021-12-21 14:55:01,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:01,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:01,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:01,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:01,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:01,611 INFO L87 Difference]: Start difference. First operand 2139 states and 2845 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-21 14:55:02,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:02,246 INFO L93 Difference]: Finished difference Result 5798 states and 7627 transitions. [2021-12-21 14:55:02,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 14:55:02,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2021-12-21 14:55:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:02,265 INFO L225 Difference]: With dead ends: 5798 [2021-12-21 14:55:02,265 INFO L226 Difference]: Without dead ends: 4078 [2021-12-21 14:55:02,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-21 14:55:02,271 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1486 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:02,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 2298 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 14:55:02,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2021-12-21 14:55:02,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 3858. [2021-12-21 14:55:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3068 states have (on average 1.302477183833116) internal successors, (3996), 3132 states have internal predecessors, (3996), 418 states have call successors, (418), 276 states have call predecessors, (418), 370 states have return successors, (627), 454 states have call predecessors, (627), 414 states have call successors, (627) [2021-12-21 14:55:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5041 transitions. [2021-12-21 14:55:02,466 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5041 transitions. Word has length 91 [2021-12-21 14:55:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:02,469 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5041 transitions. [2021-12-21 14:55:02,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-21 14:55:02,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5041 transitions. [2021-12-21 14:55:02,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:55:02,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:02,473 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:02,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:55:02,474 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:02,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1094419383, now seen corresponding path program 1 times [2021-12-21 14:55:02,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:02,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071764034] [2021-12-21 14:55:02,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:02,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:55:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:55:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:55:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:55:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 14:55:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 14:55:02,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:02,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071764034] [2021-12-21 14:55:02,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071764034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:02,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:02,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:55:02,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659769989] [2021-12-21 14:55:02,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:02,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:55:02,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:55:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:55:02,560 INFO L87 Difference]: Start difference. First operand 3858 states and 5041 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-12-21 14:55:03,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:03,116 INFO L93 Difference]: Finished difference Result 5696 states and 7344 transitions. [2021-12-21 14:55:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 14:55:03,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 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 91 [2021-12-21 14:55:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:03,125 INFO L225 Difference]: With dead ends: 5696 [2021-12-21 14:55:03,126 INFO L226 Difference]: Without dead ends: 2257 [2021-12-21 14:55:03,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:03,135 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 1160 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:03,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 1835 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 14:55:03,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-12-21 14:55:03,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 2139. [2021-12-21 14:55:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2139 states, 1730 states have (on average 1.323699421965318) internal successors, (2290), 1758 states have internal predecessors, (2290), 225 states have call successors, (225), 142 states have call predecessors, (225), 182 states have return successors, (287), 241 states have call predecessors, (287), 221 states have call successors, (287) [2021-12-21 14:55:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 2802 transitions. [2021-12-21 14:55:03,251 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 2802 transitions. Word has length 91 [2021-12-21 14:55:03,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:03,252 INFO L470 AbstractCegarLoop]: Abstraction has 2139 states and 2802 transitions. [2021-12-21 14:55:03,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-12-21 14:55:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 2802 transitions. [2021-12-21 14:55:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-21 14:55:03,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:03,255 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:03,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:55:03,255 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:03,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1268013203, now seen corresponding path program 1 times [2021-12-21 14:55:03,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:03,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020744445] [2021-12-21 14:55:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:03,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:55:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:55:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:55:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:55:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 14:55:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 14:55:03,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:03,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020744445] [2021-12-21 14:55:03,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020744445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:03,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:03,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:55:03,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906985705] [2021-12-21 14:55:03,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:03,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:55:03,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:55:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:55:03,332 INFO L87 Difference]: Start difference. First operand 2139 states and 2802 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 14:55:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:04,517 INFO L93 Difference]: Finished difference Result 4965 states and 6404 transitions. [2021-12-21 14:55:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-21 14:55:04,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2021-12-21 14:55:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:04,527 INFO L225 Difference]: With dead ends: 4965 [2021-12-21 14:55:04,527 INFO L226 Difference]: Without dead ends: 2938 [2021-12-21 14:55:04,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2021-12-21 14:55:04,544 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 2631 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2675 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:04,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2675 Valid, 2449 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 14:55:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-12-21 14:55:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2761. [2021-12-21 14:55:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2196 states have (on average 1.284608378870674) internal successors, (2821), 2232 states have internal predecessors, (2821), 303 states have call successors, (303), 190 states have call predecessors, (303), 260 states have return successors, (420), 341 states have call predecessors, (420), 299 states have call successors, (420) [2021-12-21 14:55:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3544 transitions. [2021-12-21 14:55:04,696 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3544 transitions. Word has length 92 [2021-12-21 14:55:04,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:04,711 INFO L470 AbstractCegarLoop]: Abstraction has 2761 states and 3544 transitions. [2021-12-21 14:55:04,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 14:55:04,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3544 transitions. [2021-12-21 14:55:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 14:55:04,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:04,715 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:04,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:55:04,715 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:04,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1207382224, now seen corresponding path program 1 times [2021-12-21 14:55:04,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:04,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213733822] [2021-12-21 14:55:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:04,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:55:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:55:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:55:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:55:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 14:55:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 14:55:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 14:55:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 14:55:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 14:55:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 14:55:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 14:55:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 14:55:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-21 14:55:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-21 14:55:04,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:04,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213733822] [2021-12-21 14:55:04,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213733822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 14:55:04,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609689075] [2021-12-21 14:55:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:04,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:55:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:55:04,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 14:55:04,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 14:55:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:04,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 14:55:04,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:55:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-21 14:55:05,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:55:05,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609689075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:05,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 14:55:05,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-21 14:55:05,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340426646] [2021-12-21 14:55:05,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:05,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:55:05,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:55:05,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:05,249 INFO L87 Difference]: Start difference. First operand 2761 states and 3544 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 14:55:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:05,359 INFO L93 Difference]: Finished difference Result 7086 states and 8859 transitions. [2021-12-21 14:55:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:55:05,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2021-12-21 14:55:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:05,376 INFO L225 Difference]: With dead ends: 7086 [2021-12-21 14:55:05,376 INFO L226 Difference]: Without dead ends: 4898 [2021-12-21 14:55:05,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:05,383 INFO L933 BasicCegarLoop]: 801 mSDtfsCounter, 61 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:05,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 1569 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:55:05,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2021-12-21 14:55:05,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4853. [2021-12-21 14:55:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4853 states, 3821 states have (on average 1.248102590944779) internal successors, (4769), 3886 states have internal predecessors, (4769), 537 states have call successors, (537), 372 states have call predecessors, (537), 493 states have return successors, (727), 597 states have call predecessors, (727), 533 states have call successors, (727) [2021-12-21 14:55:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4853 states to 4853 states and 6033 transitions. [2021-12-21 14:55:05,599 INFO L78 Accepts]: Start accepts. Automaton has 4853 states and 6033 transitions. Word has length 163 [2021-12-21 14:55:05,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:05,599 INFO L470 AbstractCegarLoop]: Abstraction has 4853 states and 6033 transitions. [2021-12-21 14:55:05,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 14:55:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 4853 states and 6033 transitions. [2021-12-21 14:55:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-21 14:55:05,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:05,603 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:05,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 14:55:05,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 14:55:05,824 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:05,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:05,825 INFO L85 PathProgramCache]: Analyzing trace with hash -207723447, now seen corresponding path program 1 times [2021-12-21 14:55:05,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444581167] [2021-12-21 14:55:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:05,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:55:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:55:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:55:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:55:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 14:55:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 14:55:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 14:55:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 14:55:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 14:55:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 14:55:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 14:55:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 14:55:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 14:55:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-21 14:55:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-21 14:55:05,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:05,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444581167] [2021-12-21 14:55:05,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444581167] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 14:55:05,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35871851] [2021-12-21 14:55:05,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:05,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:55:05,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:55:05,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 14:55:05,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 14:55:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:06,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 14:55:06,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:55:06,612 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-21 14:55:06,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:55:06,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35871851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:06,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 14:55:06,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-21 14:55:06,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794784327] [2021-12-21 14:55:06,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:06,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:55:06,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:06,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:55:06,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:06,615 INFO L87 Difference]: Start difference. First operand 4853 states and 6033 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 14:55:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:06,884 INFO L93 Difference]: Finished difference Result 13721 states and 16771 transitions. [2021-12-21 14:55:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:55:06,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2021-12-21 14:55:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:06,916 INFO L225 Difference]: With dead ends: 13721 [2021-12-21 14:55:06,917 INFO L226 Difference]: Without dead ends: 9287 [2021-12-21 14:55:06,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:06,928 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 52 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:06,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1569 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:55:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9287 states. [2021-12-21 14:55:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9287 to 9277. [2021-12-21 14:55:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 7258 states have (on average 1.2241664370349958) internal successors, (8885), 7383 states have internal predecessors, (8885), 1037 states have call successors, (1037), 736 states have call predecessors, (1037), 980 states have return successors, (1420), 1160 states have call predecessors, (1420), 1033 states have call successors, (1420) [2021-12-21 14:55:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 11342 transitions. [2021-12-21 14:55:07,260 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 11342 transitions. Word has length 195 [2021-12-21 14:55:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:07,261 INFO L470 AbstractCegarLoop]: Abstraction has 9277 states and 11342 transitions. [2021-12-21 14:55:07,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 14:55:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 11342 transitions. [2021-12-21 14:55:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-21 14:55:07,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:07,267 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:07,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 14:55:07,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-21 14:55:07,481 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:07,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:07,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1105116725, now seen corresponding path program 1 times [2021-12-21 14:55:07,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:07,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879193805] [2021-12-21 14:55:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:07,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 14:55:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 14:55:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 14:55:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 14:55:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 14:55:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 14:55:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 14:55:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 14:55:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 14:55:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 14:55:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 14:55:07,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 14:55:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 14:55:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 14:55:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 14:55:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-21 14:55:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-21 14:55:07,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:07,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879193805] [2021-12-21 14:55:07,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879193805] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 14:55:07,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715783503] [2021-12-21 14:55:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:07,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:55:07,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:55:07,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 14:55:07,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 14:55:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:07,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 14:55:07,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 14:55:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-21 14:55:08,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 14:55:08,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715783503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:08,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 14:55:08,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-21 14:55:08,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371624738] [2021-12-21 14:55:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:08,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:55:08,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:55:08,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:08,345 INFO L87 Difference]: Start difference. First operand 9277 states and 11342 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 14:55:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:08,651 INFO L93 Difference]: Finished difference Result 15807 states and 19582 transitions. [2021-12-21 14:55:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:55:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2021-12-21 14:55:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:08,657 INFO L225 Difference]: With dead ends: 15807 [2021-12-21 14:55:08,657 INFO L226 Difference]: Without dead ends: 408 [2021-12-21 14:55:08,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:08,684 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 669 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:08,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 773 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:55:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-21 14:55:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2021-12-21 14:55:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5833333333333333) internal successors, (589), 374 states have internal predecessors, (589), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:55:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 645 transitions. [2021-12-21 14:55:08,697 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 645 transitions. Word has length 195 [2021-12-21 14:55:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:08,698 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 645 transitions. [2021-12-21 14:55:08,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-21 14:55:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 645 transitions. [2021-12-21 14:55:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:08,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:08,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:08,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 14:55:08,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 14:55:08,919 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash -397337084, now seen corresponding path program 1 times [2021-12-21 14:55:08,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:08,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896066332] [2021-12-21 14:55:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:08,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:09,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:09,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896066332] [2021-12-21 14:55:09,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896066332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:09,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:09,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:55:09,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487173332] [2021-12-21 14:55:09,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:09,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:55:09,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:55:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:55:09,069 INFO L87 Difference]: Start difference. First operand 408 states and 645 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:55:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:10,368 INFO L93 Difference]: Finished difference Result 957 states and 1535 transitions. [2021-12-21 14:55:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:55:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:10,370 INFO L225 Difference]: With dead ends: 957 [2021-12-21 14:55:10,370 INFO L226 Difference]: Without dead ends: 561 [2021-12-21 14:55:10,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:55:10,371 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1110 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:10,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 1160 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:55:10,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-12-21 14:55:10,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2021-12-21 14:55:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5806451612903225) internal successors, (588), 374 states have internal predecessors, (588), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:55:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 644 transitions. [2021-12-21 14:55:10,388 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 644 transitions. Word has length 190 [2021-12-21 14:55:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:10,388 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 644 transitions. [2021-12-21 14:55:10,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:55:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 644 transitions. [2021-12-21 14:55:10,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:10,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:10,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:10,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 14:55:10,390 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:10,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:10,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1996486142, now seen corresponding path program 1 times [2021-12-21 14:55:10,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:10,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800807209] [2021-12-21 14:55:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:10,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:10,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:10,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800807209] [2021-12-21 14:55:10,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800807209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:10,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:10,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:55:10,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139400783] [2021-12-21 14:55:10,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:10,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:55:10,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:10,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:55:10,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:55:10,499 INFO L87 Difference]: Start difference. First operand 408 states and 644 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:55:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:11,793 INFO L93 Difference]: Finished difference Result 949 states and 1518 transitions. [2021-12-21 14:55:11,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:55:11,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:11,802 INFO L225 Difference]: With dead ends: 949 [2021-12-21 14:55:11,802 INFO L226 Difference]: Without dead ends: 561 [2021-12-21 14:55:11,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:55:11,803 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1101 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:11,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 1158 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:55:11,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-12-21 14:55:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 408. [2021-12-21 14:55:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 372 states have (on average 1.5779569892473118) internal successors, (587), 374 states have internal predecessors, (587), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-21 14:55:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 643 transitions. [2021-12-21 14:55:11,822 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 643 transitions. Word has length 190 [2021-12-21 14:55:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:11,822 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 643 transitions. [2021-12-21 14:55:11,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-21 14:55:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 643 transitions. [2021-12-21 14:55:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:11,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:11,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:11,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 14:55:11,824 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:11,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2086546432, now seen corresponding path program 1 times [2021-12-21 14:55:11,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:11,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017066292] [2021-12-21 14:55:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:11,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:11,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:11,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:11,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:11,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:11,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:11,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017066292] [2021-12-21 14:55:11,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017066292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:11,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:11,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:55:11,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812906355] [2021-12-21 14:55:11,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:11,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:55:11,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:11,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:55:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:55:11,936 INFO L87 Difference]: Start difference. First operand 408 states and 643 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-21 14:55:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:14,448 INFO L93 Difference]: Finished difference Result 1506 states and 2426 transitions. [2021-12-21 14:55:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:55:14,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:14,451 INFO L225 Difference]: With dead ends: 1506 [2021-12-21 14:55:14,452 INFO L226 Difference]: Without dead ends: 1120 [2021-12-21 14:55:14,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:14,455 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 1682 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:14,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 2025 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 14:55:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-12-21 14:55:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 813. [2021-12-21 14:55:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 748 states have (on average 1.5909090909090908) internal successors, (1190), 751 states have internal predecessors, (1190), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-21 14:55:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1293 transitions. [2021-12-21 14:55:14,524 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1293 transitions. Word has length 190 [2021-12-21 14:55:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:14,524 INFO L470 AbstractCegarLoop]: Abstraction has 813 states and 1293 transitions. [2021-12-21 14:55:14,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-21 14:55:14,524 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1293 transitions. [2021-12-21 14:55:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:14,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:14,526 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:14,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 14:55:14,527 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:14,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:14,527 INFO L85 PathProgramCache]: Analyzing trace with hash 361394428, now seen corresponding path program 1 times [2021-12-21 14:55:14,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:14,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146580915] [2021-12-21 14:55:14,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:14,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:14,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:14,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:14,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:14,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146580915] [2021-12-21 14:55:14,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146580915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:14,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:14,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:14,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327086067] [2021-12-21 14:55:14,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:14,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:14,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:14,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:14,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:14,696 INFO L87 Difference]: Start difference. First operand 813 states and 1293 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:17,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:17,872 INFO L93 Difference]: Finished difference Result 2490 states and 4021 transitions. [2021-12-21 14:55:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:55:17,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:17,888 INFO L225 Difference]: With dead ends: 2490 [2021-12-21 14:55:17,888 INFO L226 Difference]: Without dead ends: 1699 [2021-12-21 14:55:17,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:55:17,890 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 1826 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:17,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1846 Valid, 2295 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:55:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2021-12-21 14:55:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1189. [2021-12-21 14:55:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1095 states have (on average 1.5844748858447488) internal successors, (1735), 1099 states have internal predecessors, (1735), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-21 14:55:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1884 transitions. [2021-12-21 14:55:18,018 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1884 transitions. Word has length 190 [2021-12-21 14:55:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:18,019 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1884 transitions. [2021-12-21 14:55:18,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1884 transitions. [2021-12-21 14:55:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:18,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:18,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:18,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 14:55:18,021 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1561856002, now seen corresponding path program 1 times [2021-12-21 14:55:18,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:18,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863857035] [2021-12-21 14:55:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:18,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:18,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:18,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863857035] [2021-12-21 14:55:18,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863857035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:18,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:18,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:18,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774625015] [2021-12-21 14:55:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:18,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:18,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:18,187 INFO L87 Difference]: Start difference. First operand 1189 states and 1884 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:21,060 INFO L93 Difference]: Finished difference Result 3941 states and 6352 transitions. [2021-12-21 14:55:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:55:21,060 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:21,070 INFO L225 Difference]: With dead ends: 3941 [2021-12-21 14:55:21,070 INFO L226 Difference]: Without dead ends: 2774 [2021-12-21 14:55:21,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:55:21,076 INFO L933 BasicCegarLoop]: 1087 mSDtfsCounter, 1715 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:21,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 3201 Invalid, 3376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 14:55:21,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2021-12-21 14:55:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 1942. [2021-12-21 14:55:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5787709497206703) internal successors, (2826), 1796 states have internal predecessors, (2826), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-21 14:55:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3071 transitions. [2021-12-21 14:55:21,228 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3071 transitions. Word has length 190 [2021-12-21 14:55:21,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:21,229 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 3071 transitions. [2021-12-21 14:55:21,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3071 transitions. [2021-12-21 14:55:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:21,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:21,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:21,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 14:55:21,231 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:21,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:21,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1008502972, now seen corresponding path program 1 times [2021-12-21 14:55:21,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:21,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828608738] [2021-12-21 14:55:21,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:21,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:21,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:21,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828608738] [2021-12-21 14:55:21,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828608738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:21,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:21,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:21,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823321098] [2021-12-21 14:55:21,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:21,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:21,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:21,340 INFO L87 Difference]: Start difference. First operand 1942 states and 3071 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:22,613 INFO L93 Difference]: Finished difference Result 4682 states and 7530 transitions. [2021-12-21 14:55:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:55:22,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:22,620 INFO L225 Difference]: With dead ends: 4682 [2021-12-21 14:55:22,620 INFO L226 Difference]: Without dead ends: 2762 [2021-12-21 14:55:22,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:22,623 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 1392 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:22,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 1503 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 14:55:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2021-12-21 14:55:22,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 1942. [2021-12-21 14:55:22,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5759776536312848) internal successors, (2821), 1796 states have internal predecessors, (2821), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-21 14:55:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3066 transitions. [2021-12-21 14:55:22,770 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3066 transitions. Word has length 190 [2021-12-21 14:55:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:22,770 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 3066 transitions. [2021-12-21 14:55:22,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3066 transitions. [2021-12-21 14:55:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:22,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:22,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:22,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 14:55:22,772 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1507059774, now seen corresponding path program 1 times [2021-12-21 14:55:22,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005270987] [2021-12-21 14:55:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:22,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:22,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:22,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:22,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005270987] [2021-12-21 14:55:22,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005270987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:22,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:22,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:22,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838426834] [2021-12-21 14:55:22,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:22,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:22,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:22,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:22,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:22,966 INFO L87 Difference]: Start difference. First operand 1942 states and 3066 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:24,725 INFO L93 Difference]: Finished difference Result 4676 states and 7504 transitions. [2021-12-21 14:55:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:55:24,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:24,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:24,733 INFO L225 Difference]: With dead ends: 4676 [2021-12-21 14:55:24,733 INFO L226 Difference]: Without dead ends: 2756 [2021-12-21 14:55:24,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:24,738 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1393 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:24,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1414 Valid, 1497 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:55:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2021-12-21 14:55:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 1942. [2021-12-21 14:55:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1790 states have (on average 1.5731843575418993) internal successors, (2816), 1796 states have internal predecessors, (2816), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-21 14:55:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 3061 transitions. [2021-12-21 14:55:24,985 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 3061 transitions. Word has length 190 [2021-12-21 14:55:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:24,985 INFO L470 AbstractCegarLoop]: Abstraction has 1942 states and 3061 transitions. [2021-12-21 14:55:24,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 3061 transitions. [2021-12-21 14:55:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:24,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:24,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:24,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 14:55:24,990 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:24,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:24,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2077331580, now seen corresponding path program 1 times [2021-12-21 14:55:24,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:24,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533927127] [2021-12-21 14:55:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:24,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:25,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:25,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533927127] [2021-12-21 14:55:25,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533927127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:25,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:25,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:25,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819634228] [2021-12-21 14:55:25,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:25,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:25,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:25,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:25,155 INFO L87 Difference]: Start difference. First operand 1942 states and 3061 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:28,439 INFO L93 Difference]: Finished difference Result 6711 states and 10723 transitions. [2021-12-21 14:55:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:55:28,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:28,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:28,473 INFO L225 Difference]: With dead ends: 6711 [2021-12-21 14:55:28,473 INFO L226 Difference]: Without dead ends: 4791 [2021-12-21 14:55:28,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:55:28,508 INFO L933 BasicCegarLoop]: 1063 mSDtfsCounter, 1693 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 3235 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 3329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:28,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1713 Valid, 3177 Invalid, 3329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3235 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:55:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2021-12-21 14:55:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 3462. [2021-12-21 14:55:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3194 states have (on average 1.5685660613650594) internal successors, (5010), 3204 states have internal predecessors, (5010), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-21 14:55:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5453 transitions. [2021-12-21 14:55:28,858 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5453 transitions. Word has length 190 [2021-12-21 14:55:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:28,858 INFO L470 AbstractCegarLoop]: Abstraction has 3462 states and 5453 transitions. [2021-12-21 14:55:28,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5453 transitions. [2021-12-21 14:55:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:28,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:28,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:28,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 14:55:28,860 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:28,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1291333690, now seen corresponding path program 1 times [2021-12-21 14:55:28,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:28,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769329474] [2021-12-21 14:55:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:28,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:28,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:28,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:29,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:29,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769329474] [2021-12-21 14:55:29,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769329474] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:29,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:29,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:29,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261040091] [2021-12-21 14:55:29,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:29,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:29,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:29,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:29,066 INFO L87 Difference]: Start difference. First operand 3462 states and 5453 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:33,112 INFO L93 Difference]: Finished difference Result 12289 states and 19601 transitions. [2021-12-21 14:55:33,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:55:33,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:33,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:33,168 INFO L225 Difference]: With dead ends: 12289 [2021-12-21 14:55:33,168 INFO L226 Difference]: Without dead ends: 8849 [2021-12-21 14:55:33,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:55:33,187 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1692 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:33,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 3172 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 14:55:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8849 states. [2021-12-21 14:55:34,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8849 to 6503. [2021-12-21 14:55:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6503 states, 6003 states have (on average 1.565217391304348) internal successors, (9396), 6021 states have internal predecessors, (9396), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-21 14:55:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6503 states to 6503 states and 10253 transitions. [2021-12-21 14:55:34,051 INFO L78 Accepts]: Start accepts. Automaton has 6503 states and 10253 transitions. Word has length 190 [2021-12-21 14:55:34,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:34,067 INFO L470 AbstractCegarLoop]: Abstraction has 6503 states and 10253 transitions. [2021-12-21 14:55:34,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:34,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6503 states and 10253 transitions. [2021-12-21 14:55:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:34,071 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:34,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:34,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 14:55:34,071 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1958715580, now seen corresponding path program 1 times [2021-12-21 14:55:34,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:34,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562724538] [2021-12-21 14:55:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:34,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:34,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:34,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:34,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:34,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562724538] [2021-12-21 14:55:34,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562724538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:34,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:34,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:34,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680465274] [2021-12-21 14:55:34,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:34,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:34,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:34,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:34,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:34,258 INFO L87 Difference]: Start difference. First operand 6503 states and 10253 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:39,377 INFO L93 Difference]: Finished difference Result 23440 states and 37407 transitions. [2021-12-21 14:55:39,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:55:39,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:39,472 INFO L225 Difference]: With dead ends: 23440 [2021-12-21 14:55:39,472 INFO L226 Difference]: Without dead ends: 16959 [2021-12-21 14:55:39,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:55:39,504 INFO L933 BasicCegarLoop]: 1053 mSDtfsCounter, 1691 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 3219 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:39,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 3167 Invalid, 3313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3219 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 14:55:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2021-12-21 14:55:40,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 12600. [2021-12-21 14:55:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 11636 states have (on average 1.5632519766242694) internal successors, (18190), 11670 states have internal predecessors, (18190), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-21 14:55:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 19929 transitions. [2021-12-21 14:55:40,802 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 19929 transitions. Word has length 190 [2021-12-21 14:55:40,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:40,803 INFO L470 AbstractCegarLoop]: Abstraction has 12600 states and 19929 transitions. [2021-12-21 14:55:40,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 19929 transitions. [2021-12-21 14:55:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:40,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:40,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:40,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 14:55:40,837 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:40,837 INFO L85 PathProgramCache]: Analyzing trace with hash -236513286, now seen corresponding path program 1 times [2021-12-21 14:55:40,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:40,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990691026] [2021-12-21 14:55:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:40,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:40,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:41,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:41,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:41,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990691026] [2021-12-21 14:55:41,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990691026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:41,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:41,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:41,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990020608] [2021-12-21 14:55:41,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:41,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:41,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:41,067 INFO L87 Difference]: Start difference. First operand 12600 states and 19929 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:44,458 INFO L93 Difference]: Finished difference Result 29786 states and 47788 transitions. [2021-12-21 14:55:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:55:44,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:44,674 INFO L225 Difference]: With dead ends: 29786 [2021-12-21 14:55:44,674 INFO L226 Difference]: Without dead ends: 17208 [2021-12-21 14:55:44,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:55:44,712 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 1466 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:44,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 1443 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:55:44,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17208 states. [2021-12-21 14:55:46,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17208 to 12600. [2021-12-21 14:55:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12600 states, 11636 states have (on average 1.5604159504984532) internal successors, (18157), 11670 states have internal predecessors, (18157), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-21 14:55:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12600 states to 12600 states and 19896 transitions. [2021-12-21 14:55:46,259 INFO L78 Accepts]: Start accepts. Automaton has 12600 states and 19896 transitions. Word has length 190 [2021-12-21 14:55:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:46,260 INFO L470 AbstractCegarLoop]: Abstraction has 12600 states and 19896 transitions. [2021-12-21 14:55:46,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:46,260 INFO L276 IsEmpty]: Start isEmpty. Operand 12600 states and 19896 transitions. [2021-12-21 14:55:46,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:46,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:46,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:46,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 14:55:46,292 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:46,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:46,293 INFO L85 PathProgramCache]: Analyzing trace with hash 108314876, now seen corresponding path program 1 times [2021-12-21 14:55:46,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:46,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403730037] [2021-12-21 14:55:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:46,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:46,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:46,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:46,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:46,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:46,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403730037] [2021-12-21 14:55:46,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403730037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:46,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:46,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:46,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614544527] [2021-12-21 14:55:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:46,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:46,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:46,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:46,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:46,480 INFO L87 Difference]: Start difference. First operand 12600 states and 19896 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:55:54,118 INFO L93 Difference]: Finished difference Result 45709 states and 72981 transitions. [2021-12-21 14:55:54,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:55:54,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-21 14:55:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:55:54,278 INFO L225 Difference]: With dead ends: 45709 [2021-12-21 14:55:54,291 INFO L226 Difference]: Without dead ends: 33131 [2021-12-21 14:55:54,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:55:54,336 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 1683 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 3192 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 3156 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 3192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-21 14:55:54,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 3156 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 3192 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-21 14:55:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33131 states. [2021-12-21 14:55:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33131 to 24858. [2021-12-21 14:55:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24858 states, 22966 states have (on average 1.5585212923452059) internal successors, (35793), 23032 states have internal predecessors, (35793), 1437 states have call successors, (1437), 391 states have call predecessors, (1437), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2021-12-21 14:55:56,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24858 states to 24858 states and 39458 transitions. [2021-12-21 14:55:56,888 INFO L78 Accepts]: Start accepts. Automaton has 24858 states and 39458 transitions. Word has length 190 [2021-12-21 14:55:56,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:55:56,889 INFO L470 AbstractCegarLoop]: Abstraction has 24858 states and 39458 transitions. [2021-12-21 14:55:56,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-21 14:55:56,889 INFO L276 IsEmpty]: Start isEmpty. Operand 24858 states and 39458 transitions. [2021-12-21 14:55:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:55:56,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:55:56,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:55:56,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-21 14:55:56,925 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:55:56,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:55:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1089269690, now seen corresponding path program 1 times [2021-12-21 14:55:56,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:55:56,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232044847] [2021-12-21 14:55:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:55:56,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:55:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:55:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:55:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:57,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:55:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:57,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:55:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:55:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:55:57,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:55:57,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:55:57,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232044847] [2021-12-21 14:55:57,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232044847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:55:57,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:55:57,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:55:57,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044408270] [2021-12-21 14:55:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:55:57,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:55:57,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:55:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:55:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:55:57,118 INFO L87 Difference]: Start difference. First operand 24858 states and 39458 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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)