./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.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/Problem05_label42+token_ring.13.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8467ffbb1ccc6ad3e7cda0bad7b8fded9577e94940df507be3d09419f9a5a0e1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:12:16,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:12:16,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:12:16,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:12:16,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:12:16,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:12:16,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:12:16,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:12:16,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:12:16,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:12:16,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:12:16,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:12:16,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:12:16,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:12:16,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:12:16,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:12:16,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:12:16,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:12:16,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:12:16,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:12:16,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:12:16,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:12:16,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:12:16,140 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:12:16,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:12:16,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:12:16,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:12:16,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:12:16,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:12:16,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:12:16,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:12:16,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:12:16,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:12:16,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:12:16,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:12:16,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:12:16,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:12:16,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:12:16,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:12:16,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:12:16,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:12:16,153 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:12:16,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:12:16,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:12:16,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:12:16,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:12:16,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:12:16,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:12:16,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:12:16,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:12:16,190 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:12:16,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:12:16,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:12:16,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:12:16,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:12:16,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:12:16,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:12:16,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:12:16,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:12:16,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:12:16,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:12:16,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:12:16,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:12:16,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:12:16,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:12:16,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:12:16,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:12:16,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:12:16,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:12:16,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:12:16,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:12:16,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:12:16,199 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:12:16,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:12:16,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:12:16,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:12:16,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8467ffbb1ccc6ad3e7cda0bad7b8fded9577e94940df507be3d09419f9a5a0e1 [2021-12-21 14:12:16,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:12:16,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:12:16,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:12:16,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:12:16,427 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:12:16,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c [2021-12-21 14:12:16,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012774a8/b0e551aa922a40e695e581cfffeefbb6/FLAG18160c4cf [2021-12-21 14:12:17,247 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:12:17,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.13.cil-1.c [2021-12-21 14:12:17,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012774a8/b0e551aa922a40e695e581cfffeefbb6/FLAG18160c4cf [2021-12-21 14:12:17,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012774a8/b0e551aa922a40e695e581cfffeefbb6 [2021-12-21 14:12:17,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:12:17,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:12:17,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:12:17,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:12:17,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:12:17,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:12:17" (1/1) ... [2021-12-21 14:12:17,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a85a1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:17, skipping insertion in model container [2021-12-21 14:12:17,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:12:17" (1/1) ... [2021-12-21 14:12:17,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:12:17,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:12:19,248 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/Problem05_label42+token_ring.13.cil-1.c[378560,378573] [2021-12-21 14:12:19,275 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/Problem05_label42+token_ring.13.cil-1.c[383339,383352] [2021-12-21 14:12:19,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:12:19,516 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:12:20,273 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/Problem05_label42+token_ring.13.cil-1.c[378560,378573] [2021-12-21 14:12:20,279 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/Problem05_label42+token_ring.13.cil-1.c[383339,383352] [2021-12-21 14:12:20,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:12:20,369 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:12:20,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20 WrapperNode [2021-12-21 14:12:20,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:12:20,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:12:20,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:12:20,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:12:20,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:20,450 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:20,817 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13262 [2021-12-21 14:12:20,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:12:20,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:12:20,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:12:20,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:12:20,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:20,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:20,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:20,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:21,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:21,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:21,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:21,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:12:21,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:12:21,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:12:21,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:12:21,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (1/1) ... [2021-12-21 14:12:21,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:12:21,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:12:21,444 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 14:12:21,468 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 14:12:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:12:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:12:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:12:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:12:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:12:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:12:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:12:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-21 14:12:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-21 14:12:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:12:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:12:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:12:21,481 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:12:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:12:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:12:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:12:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:12:21,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:12:21,672 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:12:21,674 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:12:27,465 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:12:27,499 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:12:27,499 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-21 14:12:27,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:12:27 BoogieIcfgContainer [2021-12-21 14:12:27,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:12:27,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:12:27,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:12:27,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:12:27,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:12:17" (1/3) ... [2021-12-21 14:12:27,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7a3204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:12:27, skipping insertion in model container [2021-12-21 14:12:27,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:12:20" (2/3) ... [2021-12-21 14:12:27,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7a3204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:12:27, skipping insertion in model container [2021-12-21 14:12:27,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:12:27" (3/3) ... [2021-12-21 14:12:27,512 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.13.cil-1.c [2021-12-21 14:12:27,518 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:12:27,518 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:12:27,564 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:12:27,569 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 14:12:27,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:12:27,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-21 14:12:27,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:27,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:27,647 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 14:12:27,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:27,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:27,652 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2021-12-21 14:12:27,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:27,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945180630] [2021-12-21 14:12:27,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:27,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:27,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:28,213 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 14:12:28,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:28,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945180630] [2021-12-21 14:12:28,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945180630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:28,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:28,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:12:28,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744208734] [2021-12-21 14:12:28,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:28,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:12:28,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:28,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:12:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:12:28,259 INFO L87 Difference]: Start difference. First operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) 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 14:12:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:30,123 INFO L93 Difference]: Finished difference Result 5340 states and 9793 transitions. [2021-12-21 14:12:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:12:30,126 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 14:12:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:30,159 INFO L225 Difference]: With dead ends: 5340 [2021-12-21 14:12:30,159 INFO L226 Difference]: Without dead ends: 2683 [2021-12-21 14:12:30,174 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 14:12:30,177 INFO L933 BasicCegarLoop]: 4741 mSDtfsCounter, 1121 mSDsluCounter, 12530 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:30,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 17271 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:12:30,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-21 14:12:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-21 14:12:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.824709185720016) internal successors, (4549), 2496 states have internal predecessors, (4549), 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 14:12:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4605 transitions. [2021-12-21 14:12:30,416 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4605 transitions. Word has length 190 [2021-12-21 14:12:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:30,418 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4605 transitions. [2021-12-21 14:12:30,418 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 14:12:30,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4605 transitions. [2021-12-21 14:12:30,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:30,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:30,429 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 14:12:30,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:12:30,430 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 431579580, now seen corresponding path program 1 times [2021-12-21 14:12:30,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:30,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386415276] [2021-12-21 14:12:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:30,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:30,743 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 14:12:30,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:30,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386415276] [2021-12-21 14:12:30,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386415276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:30,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:30,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:12:30,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580782950] [2021-12-21 14:12:30,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:30,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:12:30,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:12:30,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:12:30,751 INFO L87 Difference]: Start difference. First operand 2530 states and 4605 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 14:12:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:32,244 INFO L93 Difference]: Finished difference Result 3075 states and 5487 transitions. [2021-12-21 14:12:32,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:12:32,245 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 14:12:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:32,257 INFO L225 Difference]: With dead ends: 3075 [2021-12-21 14:12:32,257 INFO L226 Difference]: Without dead ends: 2683 [2021-12-21 14:12:32,259 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 14:12:32,260 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 1107 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 16998 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:32,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 16998 Invalid, 820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:12:32,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-21 14:12:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-21 14:12:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8243080625752106) internal successors, (4548), 2496 states have internal predecessors, (4548), 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 14:12:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4604 transitions. [2021-12-21 14:12:32,330 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4604 transitions. Word has length 190 [2021-12-21 14:12:32,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:32,331 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4604 transitions. [2021-12-21 14:12:32,331 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 14:12:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4604 transitions. [2021-12-21 14:12:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:32,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:32,334 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 14:12:32,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:12:32,334 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:32,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash -217013190, now seen corresponding path program 1 times [2021-12-21 14:12:32,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:32,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641352856] [2021-12-21 14:12:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:32,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:32,624 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 14:12:32,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:32,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641352856] [2021-12-21 14:12:32,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641352856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:32,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:32,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 14:12:32,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914222221] [2021-12-21 14:12:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:32,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 14:12:32,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:32,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 14:12:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 14:12:32,627 INFO L87 Difference]: Start difference. First operand 2530 states and 4604 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 14:12:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:35,618 INFO L93 Difference]: Finished difference Result 3632 states and 6395 transitions. [2021-12-21 14:12:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:12:35,622 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 14:12:35,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:35,637 INFO L225 Difference]: With dead ends: 3632 [2021-12-21 14:12:35,637 INFO L226 Difference]: Without dead ends: 3244 [2021-12-21 14:12:35,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-21 14:12:35,640 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 5640 mSDsluCounter, 12982 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5660 SdHoareTripleChecker+Valid, 17709 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:35,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5660 Valid, 17709 Invalid, 2227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:12:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2021-12-21 14:12:35,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 2937. [2021-12-21 14:12:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.79554162312783) internal successors, (5155), 2875 states have internal predecessors, (5155), 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 14:12:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5258 transitions. [2021-12-21 14:12:35,744 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5258 transitions. Word has length 190 [2021-12-21 14:12:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:35,745 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5258 transitions. [2021-12-21 14:12:35,745 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 14:12:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5258 transitions. [2021-12-21 14:12:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:35,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:35,748 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 14:12:35,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:12:35,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:35,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2064039626, now seen corresponding path program 1 times [2021-12-21 14:12:35,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:35,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364106330] [2021-12-21 14:12:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:35,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:35,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:35,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:35,990 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 14:12:35,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:35,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364106330] [2021-12-21 14:12:35,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364106330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:35,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:35,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:35,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94309717] [2021-12-21 14:12:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:35,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:35,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:35,993 INFO L87 Difference]: Start difference. First operand 2937 states and 5258 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 14:12:39,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:39,700 INFO L93 Difference]: Finished difference Result 4620 states and 7998 transitions. [2021-12-21 14:12:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:39,701 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 14:12:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:39,716 INFO L225 Difference]: With dead ends: 4620 [2021-12-21 14:12:39,717 INFO L226 Difference]: Without dead ends: 3825 [2021-12-21 14:12:39,721 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 14:12:39,722 INFO L933 BasicCegarLoop]: 5060 mSDtfsCounter, 5676 mSDsluCounter, 17982 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5696 SdHoareTripleChecker+Valid, 23042 SdHoareTripleChecker+Invalid, 3382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:39,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5696 Valid, 23042 Invalid, 3382 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-21 14:12:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2021-12-21 14:12:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3315. [2021-12-21 14:12:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3220 states have (on average 1.7714285714285714) internal successors, (5704), 3225 states have internal predecessors, (5704), 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 14:12:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 5853 transitions. [2021-12-21 14:12:39,869 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 5853 transitions. Word has length 190 [2021-12-21 14:12:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:39,876 INFO L470 AbstractCegarLoop]: Abstraction has 3315 states and 5853 transitions. [2021-12-21 14:12:39,876 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 14:12:39,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 5853 transitions. [2021-12-21 14:12:39,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:39,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:39,879 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 14:12:39,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:12:39,880 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:39,881 INFO L85 PathProgramCache]: Analyzing trace with hash 307677240, now seen corresponding path program 1 times [2021-12-21 14:12:39,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:39,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520280174] [2021-12-21 14:12:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:39,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:39,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:40,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:40,063 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 14:12:40,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:40,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520280174] [2021-12-21 14:12:40,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520280174] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:40,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:40,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:40,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652541733] [2021-12-21 14:12:40,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:40,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:40,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:40,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:40,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:40,068 INFO L87 Difference]: Start difference. First operand 3315 states and 5853 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 14:12:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:43,662 INFO L93 Difference]: Finished difference Result 6076 states and 10341 transitions. [2021-12-21 14:12:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:43,663 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 14:12:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:43,683 INFO L225 Difference]: With dead ends: 6076 [2021-12-21 14:12:43,683 INFO L226 Difference]: Without dead ends: 4903 [2021-12-21 14:12:43,687 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 14:12:43,693 INFO L933 BasicCegarLoop]: 5048 mSDtfsCounter, 5670 mSDsluCounter, 17978 mSDsCounter, 0 mSdLazyCounter, 3289 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5690 SdHoareTripleChecker+Valid, 23026 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:43,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5690 Valid, 23026 Invalid, 3377 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3289 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 14:12:43,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4903 states. [2021-12-21 14:12:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4903 to 4075. [2021-12-21 14:12:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4075 states, 3922 states have (on average 1.7361040285568587) internal successors, (6809), 3929 states have internal predecessors, (6809), 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 14:12:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 7054 transitions. [2021-12-21 14:12:43,892 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 7054 transitions. Word has length 190 [2021-12-21 14:12:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:43,892 INFO L470 AbstractCegarLoop]: Abstraction has 4075 states and 7054 transitions. [2021-12-21 14:12:43,893 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 14:12:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 7054 transitions. [2021-12-21 14:12:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:43,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:43,896 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 14:12:43,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:12:43,897 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:43,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:43,897 INFO L85 PathProgramCache]: Analyzing trace with hash 806234042, now seen corresponding path program 1 times [2021-12-21 14:12:43,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:43,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687141350] [2021-12-21 14:12:43,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:43,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:44,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:44,067 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 14:12:44,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:44,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687141350] [2021-12-21 14:12:44,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687141350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:44,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:44,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:44,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030097907] [2021-12-21 14:12:44,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:44,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:44,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:44,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:44,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:44,070 INFO L87 Difference]: Start difference. First operand 4075 states and 7054 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 14:12:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:47,647 INFO L93 Difference]: Finished difference Result 8882 states and 14826 transitions. [2021-12-21 14:12:47,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:47,647 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 14:12:47,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:47,678 INFO L225 Difference]: With dead ends: 8882 [2021-12-21 14:12:47,679 INFO L226 Difference]: Without dead ends: 6949 [2021-12-21 14:12:47,686 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 14:12:47,688 INFO L933 BasicCegarLoop]: 5043 mSDtfsCounter, 5669 mSDsluCounter, 17978 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5689 SdHoareTripleChecker+Valid, 23021 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:47,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5689 Valid, 23021 Invalid, 3369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-21 14:12:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6949 states. [2021-12-21 14:12:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6949 to 5596. [2021-12-21 14:12:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5327 states have (on average 1.6930730242162568) internal successors, (9019), 5338 states have internal predecessors, (9019), 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 14:12:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 9462 transitions. [2021-12-21 14:12:47,980 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 9462 transitions. Word has length 190 [2021-12-21 14:12:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:47,981 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 9462 transitions. [2021-12-21 14:12:47,981 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 14:12:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 9462 transitions. [2021-12-21 14:12:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:47,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:47,985 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 14:12:47,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:12:47,986 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:47,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1376505848, now seen corresponding path program 1 times [2021-12-21 14:12:47,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:47,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427514921] [2021-12-21 14:12:47,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:47,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:48,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:48,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:48,154 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 14:12:48,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:48,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427514921] [2021-12-21 14:12:48,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427514921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:48,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:48,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:48,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679941550] [2021-12-21 14:12:48,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:48,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:48,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:48,157 INFO L87 Difference]: Start difference. First operand 5596 states and 9462 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 14:12:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:51,691 INFO L93 Difference]: Finished difference Result 14493 states and 23812 transitions. [2021-12-21 14:12:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:51,691 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 14:12:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:51,729 INFO L225 Difference]: With dead ends: 14493 [2021-12-21 14:12:51,730 INFO L226 Difference]: Without dead ends: 11039 [2021-12-21 14:12:51,743 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 14:12:51,746 INFO L933 BasicCegarLoop]: 5038 mSDtfsCounter, 5668 mSDsluCounter, 17978 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5688 SdHoareTripleChecker+Valid, 23016 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:51,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5688 Valid, 23016 Invalid, 3361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:12:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11039 states. [2021-12-21 14:12:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11039 to 8645. [2021-12-21 14:12:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8645 states, 8144 states have (on average 1.6513998035363457) internal successors, (13449), 8163 states have internal predecessors, (13449), 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 14:12:52,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8645 states to 8645 states and 14306 transitions. [2021-12-21 14:12:52,293 INFO L78 Accepts]: Start accepts. Automaton has 8645 states and 14306 transitions. Word has length 190 [2021-12-21 14:12:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:52,293 INFO L470 AbstractCegarLoop]: Abstraction has 8645 states and 14306 transitions. [2021-12-21 14:12:52,294 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 14:12:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8645 states and 14306 transitions. [2021-12-21 14:12:52,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:52,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:52,299 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 14:12:52,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:12:52,300 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:52,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1514592262, now seen corresponding path program 1 times [2021-12-21 14:12:52,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:52,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307507147] [2021-12-21 14:12:52,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:52,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:52,468 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 14:12:52,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:52,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307507147] [2021-12-21 14:12:52,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307507147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:52,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:52,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:52,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492117100] [2021-12-21 14:12:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:52,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:52,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:52,471 INFO L87 Difference]: Start difference. First operand 8645 states and 14306 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 14:12:56,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:12:56,589 INFO L93 Difference]: Finished difference Result 25716 states and 41846 transitions. [2021-12-21 14:12:56,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:12:56,590 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 14:12:56,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:12:56,653 INFO L225 Difference]: With dead ends: 25716 [2021-12-21 14:12:56,653 INFO L226 Difference]: Without dead ends: 19213 [2021-12-21 14:12:56,682 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 14:12:56,683 INFO L933 BasicCegarLoop]: 4762 mSDtfsCounter, 5779 mSDsluCounter, 17255 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5799 SdHoareTripleChecker+Valid, 22017 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:12:56,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5799 Valid, 22017 Invalid, 3031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 14:12:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19213 states. [2021-12-21 14:12:57,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19213 to 14758. [2021-12-21 14:12:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14758 states, 13793 states have (on average 1.6190096425723193) internal successors, (22331), 13828 states have internal predecessors, (22331), 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 14:12:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14758 states to 14758 states and 24070 transitions. [2021-12-21 14:12:57,683 INFO L78 Accepts]: Start accepts. Automaton has 14758 states and 24070 transitions. Word has length 190 [2021-12-21 14:12:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:12:57,684 INFO L470 AbstractCegarLoop]: Abstraction has 14758 states and 24070 transitions. [2021-12-21 14:12:57,684 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 14:12:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 14758 states and 24070 transitions. [2021-12-21 14:12:57,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:12:57,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:12:57,693 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 14:12:57,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:12:57,693 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:12:57,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:12:57,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1994377144, now seen corresponding path program 1 times [2021-12-21 14:12:57,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:12:57,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258343149] [2021-12-21 14:12:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:12:57,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:12:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:12:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:12:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:57,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:12:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:12:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:12:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:12:57,853 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 14:12:57,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:12:57,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258343149] [2021-12-21 14:12:57,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258343149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:12:57,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:12:57,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:12:57,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900755009] [2021-12-21 14:12:57,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:12:57,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:12:57,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:12:57,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:12:57,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:12:57,856 INFO L87 Difference]: Start difference. First operand 14758 states and 24070 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 14:13:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:00,755 INFO L93 Difference]: Finished difference Result 32108 states and 52373 transitions. [2021-12-21 14:13:00,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 14:13:00,756 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 14:13:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:00,824 INFO L225 Difference]: With dead ends: 32108 [2021-12-21 14:13:00,824 INFO L226 Difference]: Without dead ends: 19492 [2021-12-21 14:13:00,867 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 14:13:00,870 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 5175 mSDsluCounter, 16861 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 21510 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:00,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 21510 Invalid, 1678 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:13:00,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19492 states. [2021-12-21 14:13:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19492 to 14758. [2021-12-21 14:13:01,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14758 states, 13793 states have (on average 1.6166171246284347) internal successors, (22298), 13828 states have internal predecessors, (22298), 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 14:13:01,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14758 states to 14758 states and 24037 transitions. [2021-12-21 14:13:01,839 INFO L78 Accepts]: Start accepts. Automaton has 14758 states and 24037 transitions. Word has length 190 [2021-12-21 14:13:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:13:01,840 INFO L470 AbstractCegarLoop]: Abstraction has 14758 states and 24037 transitions. [2021-12-21 14:13:01,840 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 14:13:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 14758 states and 24037 transitions. [2021-12-21 14:13:01,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-21 14:13:01,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:13:01,850 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 14:13:01,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:13:01,850 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:13:01,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:13:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1633208262, now seen corresponding path program 1 times [2021-12-21 14:13:01,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:13:01,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827012440] [2021-12-21 14:13:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:13:01,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:13:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:13:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:01,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 14:13:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 14:13:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:02,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 14:13:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 14:13:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:13:02,026 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 14:13:02,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:13:02,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827012440] [2021-12-21 14:13:02,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827012440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:13:02,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:13:02,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:13:02,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233502322] [2021-12-21 14:13:02,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:13:02,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:13:02,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:13:02,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:13:02,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:13:02,029 INFO L87 Difference]: Start difference. First operand 14758 states and 24037 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 14:13:07,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:13:07,656 INFO L93 Difference]: Finished difference Result 48129 states and 77876 transitions. [2021-12-21 14:13:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:13:07,657 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 14:13:07,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:13:07,772 INFO L225 Difference]: With dead ends: 48129 [2021-12-21 14:13:07,773 INFO L226 Difference]: Without dead ends: 35513 [2021-12-21 14:13:07,814 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 14:13:07,815 INFO L933 BasicCegarLoop]: 5022 mSDtfsCounter, 5659 mSDsluCounter, 17978 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 23000 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-21 14:13:07,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 23000 Invalid, 3326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-21 14:13:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35513 states.