./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:56:54,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:56:54,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:56:54,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:56:54,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:56:54,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:56:54,215 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:56:54,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:56:54,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:56:54,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:56:54,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:56:54,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:56:54,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:56:54,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:56:54,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:56:54,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:56:54,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:56:54,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:56:54,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:56:54,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:56:54,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:56:54,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:56:54,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:56:54,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:56:54,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:56:54,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:56:54,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:56:54,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:56:54,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:56:54,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:56:54,249 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:56:54,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:56:54,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:56:54,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:56:54,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:56:54,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:56:54,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:56:54,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:56:54,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:56:54,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:56:54,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:56:54,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:56:54,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:56:54,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:56:54,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:56:54,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:56:54,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:56:54,276 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:56:54,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:56:54,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:56:54,277 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:56:54,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:56:54,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:56:54,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:56:54,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:56:54,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:56:54,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:56:54,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:56:54,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:56:54,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:56:54,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:56:54,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:56:54,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:56:54,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:56:54,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:56:54,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:56:54,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:56:54,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:56:54,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:56:54,281 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:56:54,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:56:54,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:56:54,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:56:54,282 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:56:54,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:56:54,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:56:54,283 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 [2021-12-16 01:56:54,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:56:54,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:56:54,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:56:54,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:56:54,515 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:56:54,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2021-12-16 01:56:54,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72639320/5570b1add7204ab29d2bf6be938c8d45/FLAGc539f0bff [2021-12-16 01:56:55,309 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:56:55,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2021-12-16 01:56:55,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72639320/5570b1add7204ab29d2bf6be938c8d45/FLAGc539f0bff [2021-12-16 01:56:55,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72639320/5570b1add7204ab29d2bf6be938c8d45 [2021-12-16 01:56:55,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:56:55,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:56:55,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:56:55,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:56:55,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:56:55,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:56:55" (1/1) ... [2021-12-16 01:56:55,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebcf6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:55, skipping insertion in model container [2021-12-16 01:56:55,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:56:55" (1/1) ... [2021-12-16 01:56:55,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:56:56,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:56:57,201 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_label44+token_ring.07.cil-1.c[377340,377353] [2021-12-16 01:56:57,224 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_label44+token_ring.07.cil-1.c[383339,383352] [2021-12-16 01:56:57,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:56:57,389 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:56:57,939 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_label44+token_ring.07.cil-1.c[377340,377353] [2021-12-16 01:56:57,944 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_label44+token_ring.07.cil-1.c[383339,383352] [2021-12-16 01:56:57,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:56:57,994 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:56:57,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57 WrapperNode [2021-12-16 01:56:57,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:56:57,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:56:57,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:56:57,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:56:58,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:58,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:58,585 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-16 01:56:58,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:56:58,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:56:58,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:56:58,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:56:58,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:58,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:58,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:58,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:58,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:58,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:59,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:59,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:56:59,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:56:59,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:56:59,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:56:59,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (1/1) ... [2021-12-16 01:56:59,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:56:59,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:56:59,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 01:56:59,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 01:56:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:56:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:56:59,266 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:56:59,283 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:56:59,283 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:56:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:56:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:56:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:56:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:56:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:56:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:56:59,284 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:56:59,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:56:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:56:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:56:59,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:56:59,473 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:56:59,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:57:04,227 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:57:04,247 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:57:04,247 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-16 01:57:04,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:57:04 BoogieIcfgContainer [2021-12-16 01:57:04,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:57:04,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:57:04,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:57:04,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:57:04,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:56:55" (1/3) ... [2021-12-16 01:57:04,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db56a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:57:04, skipping insertion in model container [2021-12-16 01:57:04,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:56:57" (2/3) ... [2021-12-16 01:57:04,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12db56a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:57:04, skipping insertion in model container [2021-12-16 01:57:04,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:57:04" (3/3) ... [2021-12-16 01:57:04,256 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.07.cil-1.c [2021-12-16 01:57:04,259 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:57:04,259 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 01:57:04,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:57:04,297 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 01:57:04,298 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 01:57:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-16 01:57:04,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:04,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:04,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:04,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:04,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-16 01:57:04,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:04,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191943127] [2021-12-16 01:57:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:04,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:04,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:04,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:04,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:04,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191943127] [2021-12-16 01:57:04,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191943127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:04,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:04,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:57:04,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976744272] [2021-12-16 01:57:04,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:04,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:57:04,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:04,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:57:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:57:04,647 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:05,473 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-16 01:57:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:57:05,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:05,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:05,491 INFO L225 Difference]: With dead ends: 4955 [2021-12-16 01:57:05,491 INFO L226 Difference]: Without dead ends: 2460 [2021-12-16 01:57:05,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:57:05,501 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:05,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:57:05,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-16 01:57:05,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-16 01:57:05,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-16 01:57:05,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-16 01:57:05,587 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-16 01:57:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:05,588 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-16 01:57:05,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-16 01:57:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:05,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:05,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:05,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:57:05,592 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:05,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:05,593 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-16 01:57:05,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:05,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863404089] [2021-12-16 01:57:05,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:05,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:05,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:05,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863404089] [2021-12-16 01:57:05,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863404089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:05,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:05,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:57:05,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289344364] [2021-12-16 01:57:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:05,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:57:05,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:05,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:57:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:57:05,733 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:06,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:06,982 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-16 01:57:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:57:06,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:06,995 INFO L225 Difference]: With dead ends: 3029 [2021-12-16 01:57:06,995 INFO L226 Difference]: Without dead ends: 2792 [2021-12-16 01:57:06,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:07,001 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:07,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:57:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-16 01:57:07,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-16 01:57:07,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-16 01:57:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-16 01:57:07,155 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-16 01:57:07,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:07,156 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-16 01:57:07,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-16 01:57:07,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:07,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:07,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:07,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:57:07,158 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:07,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-16 01:57:07,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:07,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646470773] [2021-12-16 01:57:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:07,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:07,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:07,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646470773] [2021-12-16 01:57:07,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646470773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:07,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:07,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:07,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815474556] [2021-12-16 01:57:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:07,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:07,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:07,352 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:09,085 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2021-12-16 01:57:09,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:09,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:09,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:09,095 INFO L225 Difference]: With dead ends: 3617 [2021-12-16 01:57:09,095 INFO L226 Difference]: Without dead ends: 3134 [2021-12-16 01:57:09,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:09,098 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21723 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:09,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 21723 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:57:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-12-16 01:57:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2021-12-16 01:57:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-16 01:57:09,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2021-12-16 01:57:09,152 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2021-12-16 01:57:09,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:09,152 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2021-12-16 01:57:09,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:09,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2021-12-16 01:57:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:09,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:09,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:09,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:57:09,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:09,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-16 01:57:09,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:09,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417926397] [2021-12-16 01:57:09,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:09,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:09,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:09,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:09,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417926397] [2021-12-16 01:57:09,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417926397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:09,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:09,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:09,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749804913] [2021-12-16 01:57:09,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:09,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:09,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:09,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:09,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:09,254 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:11,010 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2021-12-16 01:57:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:11,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:11,023 INFO L225 Difference]: With dead ends: 4483 [2021-12-16 01:57:11,023 INFO L226 Difference]: Without dead ends: 3771 [2021-12-16 01:57:11,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:11,026 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 21711 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:11,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 21711 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:57:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-12-16 01:57:11,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2021-12-16 01:57:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-16 01:57:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2021-12-16 01:57:11,127 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2021-12-16 01:57:11,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:11,127 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2021-12-16 01:57:11,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2021-12-16 01:57:11,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:11,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:11,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:11,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:57:11,133 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-16 01:57:11,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:11,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914639017] [2021-12-16 01:57:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:11,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:11,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:11,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:11,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914639017] [2021-12-16 01:57:11,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914639017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:11,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:11,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:11,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323436000] [2021-12-16 01:57:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:11,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:11,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:11,241 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:13,014 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2021-12-16 01:57:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:13,031 INFO L225 Difference]: With dead ends: 6150 [2021-12-16 01:57:13,032 INFO L226 Difference]: Without dead ends: 4979 [2021-12-16 01:57:13,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:13,036 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 21707 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:13,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4951 Valid, 21707 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:57:13,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-12-16 01:57:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2021-12-16 01:57:13,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-16 01:57:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2021-12-16 01:57:13,139 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2021-12-16 01:57:13,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:13,140 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2021-12-16 01:57:13,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2021-12-16 01:57:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:13,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:13,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:13,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:57:13,142 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-16 01:57:13,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:13,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096561202] [2021-12-16 01:57:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:13,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:13,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:13,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096561202] [2021-12-16 01:57:13,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096561202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:13,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:13,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:13,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488924381] [2021-12-16 01:57:13,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:13,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:13,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:13,305 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:15,353 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2021-12-16 01:57:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:15,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:15,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:15,381 INFO L225 Difference]: With dead ends: 9483 [2021-12-16 01:57:15,381 INFO L226 Difference]: Without dead ends: 7393 [2021-12-16 01:57:15,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:15,390 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21703 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:15,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21703 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 01:57:15,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2021-12-16 01:57:15,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2021-12-16 01:57:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-16 01:57:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2021-12-16 01:57:15,606 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2021-12-16 01:57:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:15,606 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2021-12-16 01:57:15,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:15,607 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2021-12-16 01:57:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:15,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:15,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:15,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:57:15,610 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:15,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:15,611 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-16 01:57:15,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:15,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691267607] [2021-12-16 01:57:15,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:15,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:15,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:15,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691267607] [2021-12-16 01:57:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691267607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:15,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:15,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:15,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417637221] [2021-12-16 01:57:15,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:15,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:15,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:15,718 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:17,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:17,606 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2021-12-16 01:57:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:57:17,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:17,660 INFO L225 Difference]: With dead ends: 16148 [2021-12-16 01:57:17,660 INFO L226 Difference]: Without dead ends: 12215 [2021-12-16 01:57:17,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:57:17,678 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21697 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:17,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21697 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 01:57:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2021-12-16 01:57:17,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2021-12-16 01:57:17,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-16 01:57:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2021-12-16 01:57:17,980 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2021-12-16 01:57:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:17,980 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2021-12-16 01:57:17,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2021-12-16 01:57:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:17,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:17,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:17,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:57:17,986 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:17,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-16 01:57:17,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:17,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860140468] [2021-12-16 01:57:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:17,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:18,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:18,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:18,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:18,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860140468] [2021-12-16 01:57:18,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860140468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:18,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:18,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:18,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122312372] [2021-12-16 01:57:18,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:18,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:18,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:18,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:18,079 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:19,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:19,183 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2021-12-16 01:57:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:57:19,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:19,214 INFO L225 Difference]: With dead ends: 19942 [2021-12-16 01:57:19,215 INFO L226 Difference]: Without dead ends: 12310 [2021-12-16 01:57:19,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:19,235 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16707 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:19,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16707 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:57:19,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2021-12-16 01:57:19,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2021-12-16 01:57:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-16 01:57:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2021-12-16 01:57:19,531 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2021-12-16 01:57:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:19,531 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2021-12-16 01:57:19,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:19,532 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2021-12-16 01:57:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:19,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:19,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:19,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:57:19,541 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-16 01:57:19,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:19,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037157150] [2021-12-16 01:57:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:19,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:19,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:19,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:19,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037157150] [2021-12-16 01:57:19,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037157150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:19,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:19,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:19,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127199560] [2021-12-16 01:57:19,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:19,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:19,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:19,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:19,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:19,628 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:20,586 INFO L93 Difference]: Finished difference Result 19908 states and 32037 transitions. [2021-12-16 01:57:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:57:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:20,617 INFO L225 Difference]: With dead ends: 19908 [2021-12-16 01:57:20,617 INFO L226 Difference]: Without dead ends: 12276 [2021-12-16 01:57:20,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:20,638 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4772 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 16701 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:20,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4787 Valid, 16701 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:57:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2021-12-16 01:57:21,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 9768. [2021-12-16 01:57:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6070198822614683) internal successors, (14468), 9037 states have internal predecessors, (14468), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-16 01:57:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15809 transitions. [2021-12-16 01:57:21,127 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15809 transitions. Word has length 123 [2021-12-16 01:57:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:21,128 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15809 transitions. [2021-12-16 01:57:21,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15809 transitions. [2021-12-16 01:57:21,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:21,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:21,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:21,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:57:21,134 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-16 01:57:21,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:21,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146619684] [2021-12-16 01:57:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:21,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:21,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:21,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:21,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:21,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146619684] [2021-12-16 01:57:21,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146619684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:21,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:21,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:21,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3499042] [2021-12-16 01:57:21,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:21,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:21,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:21,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:21,252 INFO L87 Difference]: Start difference. First operand 9768 states and 15809 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:24,003 INFO L93 Difference]: Finished difference Result 32418 states and 51321 transitions. [2021-12-16 01:57:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:57:24,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:24,083 INFO L225 Difference]: With dead ends: 32418 [2021-12-16 01:57:24,084 INFO L226 Difference]: Without dead ends: 24786 [2021-12-16 01:57:24,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:57:24,111 INFO L933 BasicCegarLoop]: 4670 mSDtfsCounter, 4975 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 21771 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:24,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4988 Valid, 21771 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 01:57:24,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24786 states. [2021-12-16 01:57:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24786 to 17038. [2021-12-16 01:57:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17038 states, 15569 states have (on average 1.5723553214721562) internal successors, (24480), 15635 states have internal predecessors, (24480), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-16 01:57:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17038 states to 17038 states and 27299 transitions. [2021-12-16 01:57:24,836 INFO L78 Accepts]: Start accepts. Automaton has 17038 states and 27299 transitions. Word has length 123 [2021-12-16 01:57:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:24,836 INFO L470 AbstractCegarLoop]: Abstraction has 17038 states and 27299 transitions. [2021-12-16 01:57:24,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:24,837 INFO L276 IsEmpty]: Start isEmpty. Operand 17038 states and 27299 transitions. [2021-12-16 01:57:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:24,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:24,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:24,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:57:24,846 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-16 01:57:24,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:24,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99078937] [2021-12-16 01:57:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:24,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:24,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:24,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:24,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:24,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99078937] [2021-12-16 01:57:24,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99078937] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:24,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:24,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:24,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311849268] [2021-12-16 01:57:24,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:24,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:24,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:24,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:24,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:24,921 INFO L87 Difference]: Start difference. First operand 17038 states and 27299 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:26,309 INFO L93 Difference]: Finished difference Result 36556 states and 58724 transitions. [2021-12-16 01:57:26,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:57:26,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:26,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:26,364 INFO L225 Difference]: With dead ends: 36556 [2021-12-16 01:57:26,365 INFO L226 Difference]: Without dead ends: 21654 [2021-12-16 01:57:26,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:26,393 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 4771 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16694 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:26,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 16694 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:57:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21654 states. [2021-12-16 01:57:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21654 to 17038. [2021-12-16 01:57:26,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17038 states, 15569 states have (on average 1.5681803584045217) internal successors, (24415), 15635 states have internal predecessors, (24415), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-16 01:57:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17038 states to 17038 states and 27234 transitions. [2021-12-16 01:57:27,009 INFO L78 Accepts]: Start accepts. Automaton has 17038 states and 27234 transitions. Word has length 123 [2021-12-16 01:57:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:27,010 INFO L470 AbstractCegarLoop]: Abstraction has 17038 states and 27234 transitions. [2021-12-16 01:57:27,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 17038 states and 27234 transitions. [2021-12-16 01:57:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:27,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:27,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:27,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:57:27,018 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-16 01:57:27,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:27,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498591624] [2021-12-16 01:57:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:27,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:27,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:27,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:27,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498591624] [2021-12-16 01:57:27,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498591624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:27,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:27,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:27,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372433316] [2021-12-16 01:57:27,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:27,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:27,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:27,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:27,098 INFO L87 Difference]: Start difference. First operand 17038 states and 27234 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:30,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:30,314 INFO L93 Difference]: Finished difference Result 59560 states and 94345 transitions. [2021-12-16 01:57:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:57:30,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:30,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:30,433 INFO L225 Difference]: With dead ends: 59560 [2021-12-16 01:57:30,434 INFO L226 Difference]: Without dead ends: 44658 [2021-12-16 01:57:30,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:57:30,475 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 5079 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 21656 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:30,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5101 Valid, 21656 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 01:57:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44658 states. [2021-12-16 01:57:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44658 to 31764. [2021-12-16 01:57:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 28919 states have (on average 1.5462152909851654) internal successors, (44715), 29049 states have internal predecessors, (44715), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-16 01:57:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 50912 transitions. [2021-12-16 01:57:32,050 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 50912 transitions. Word has length 123 [2021-12-16 01:57:32,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:32,051 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 50912 transitions. [2021-12-16 01:57:32,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 50912 transitions. [2021-12-16 01:57:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:32,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:32,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:32,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:57:32,065 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:32,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:32,065 INFO L85 PathProgramCache]: Analyzing trace with hash 815896172, now seen corresponding path program 1 times [2021-12-16 01:57:32,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:32,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256943282] [2021-12-16 01:57:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:32,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:32,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:32,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:32,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:32,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256943282] [2021-12-16 01:57:32,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256943282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:32,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:32,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:32,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806537558] [2021-12-16 01:57:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:32,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:32,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:32,137 INFO L87 Difference]: Start difference. First operand 31764 states and 50912 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:34,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:34,379 INFO L93 Difference]: Finished difference Result 69972 states and 113447 transitions. [2021-12-16 01:57:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:57:34,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:34,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:34,490 INFO L225 Difference]: With dead ends: 69972 [2021-12-16 01:57:34,491 INFO L226 Difference]: Without dead ends: 40344 [2021-12-16 01:57:34,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:34,554 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 4664 mSDsluCounter, 16442 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 20774 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:34,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 20774 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 01:57:34,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40344 states. [2021-12-16 01:57:35,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40344 to 31764. [2021-12-16 01:57:36,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 28919 states have (on average 1.541754555828348) internal successors, (44586), 29049 states have internal predecessors, (44586), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-16 01:57:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 50783 transitions. [2021-12-16 01:57:36,105 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 50783 transitions. Word has length 123 [2021-12-16 01:57:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:36,105 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 50783 transitions. [2021-12-16 01:57:36,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 50783 transitions. [2021-12-16 01:57:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:36,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:36,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:36,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:57:36,123 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:36,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash -67612818, now seen corresponding path program 1 times [2021-12-16 01:57:36,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:36,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139944733] [2021-12-16 01:57:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:36,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:36,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:36,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:36,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139944733] [2021-12-16 01:57:36,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139944733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:36,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:36,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:36,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245687206] [2021-12-16 01:57:36,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:36,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:36,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:36,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:36,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:36,198 INFO L87 Difference]: Start difference. First operand 31764 states and 50783 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:38,669 INFO L93 Difference]: Finished difference Result 69842 states and 112800 transitions. [2021-12-16 01:57:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:57:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:38,799 INFO L225 Difference]: With dead ends: 69842 [2021-12-16 01:57:38,799 INFO L226 Difference]: Without dead ends: 40214 [2021-12-16 01:57:38,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:57:38,872 INFO L933 BasicCegarLoop]: 4326 mSDtfsCounter, 4771 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16681 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:38,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 16681 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:57:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40214 states. [2021-12-16 01:57:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40214 to 31764. [2021-12-16 01:57:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 28919 states have (on average 1.5372938206715308) internal successors, (44457), 29049 states have internal predecessors, (44457), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-16 01:57:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 50654 transitions. [2021-12-16 01:57:40,633 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 50654 transitions. Word has length 123 [2021-12-16 01:57:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:40,635 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 50654 transitions. [2021-12-16 01:57:40,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:40,635 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 50654 transitions. [2021-12-16 01:57:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:40,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:40,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:40,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:57:40,649 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:40,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:40,650 INFO L85 PathProgramCache]: Analyzing trace with hash -96113108, now seen corresponding path program 1 times [2021-12-16 01:57:40,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:40,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853136400] [2021-12-16 01:57:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:40,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:40,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:40,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:40,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:40,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:40,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:40,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853136400] [2021-12-16 01:57:40,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853136400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:40,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:40,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:57:40,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998894045] [2021-12-16 01:57:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:40,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:57:40,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:40,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:57:40,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:57:40,739 INFO L87 Difference]: Start difference. First operand 31764 states and 50654 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:57:46,017 INFO L93 Difference]: Finished difference Result 108334 states and 173205 transitions. [2021-12-16 01:57:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:57:46,017 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 01:57:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:57:46,243 INFO L225 Difference]: With dead ends: 108334 [2021-12-16 01:57:46,244 INFO L226 Difference]: Without dead ends: 78706 [2021-12-16 01:57:46,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:57:46,307 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 4907 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4929 SdHoareTripleChecker+Valid, 21634 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:57:46,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4929 Valid, 21634 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:57:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78706 states. [2021-12-16 01:57:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78706 to 61536. [2021-12-16 01:57:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61536 states, 56003 states have (on average 1.5245076156634465) internal successors, (85377), 56261 states have internal predecessors, (85377), 3733 states have call successors, (3733), 1542 states have call predecessors, (3733), 1798 states have return successors, (10550), 3988 states have call predecessors, (10550), 3733 states have call successors, (10550) [2021-12-16 01:57:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61536 states to 61536 states and 99660 transitions. [2021-12-16 01:57:49,526 INFO L78 Accepts]: Start accepts. Automaton has 61536 states and 99660 transitions. Word has length 123 [2021-12-16 01:57:49,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:57:49,527 INFO L470 AbstractCegarLoop]: Abstraction has 61536 states and 99660 transitions. [2021-12-16 01:57:49,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:57:49,527 INFO L276 IsEmpty]: Start isEmpty. Operand 61536 states and 99660 transitions. [2021-12-16 01:57:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 01:57:49,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:57:49,568 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:57:49,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:57:49,568 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:57:49,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:57:49,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1780950122, now seen corresponding path program 1 times [2021-12-16 01:57:49,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:57:49,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265126949] [2021-12-16 01:57:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:57:49,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:57:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:57:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:57:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:57:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 01:57:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:49,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 01:57:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:57:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:57:49,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:57:49,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265126949] [2021-12-16 01:57:49,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265126949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:57:49,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:57:49,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:57:49,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935741622] [2021-12-16 01:57:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:57:49,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:57:49,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:57:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:57:49,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:57:49,727 INFO L87 Difference]: Start difference. First operand 61536 states and 99660 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)