./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 [2021-12-17 18:57:03,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 18:57:03,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 18:57:03,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 18:57:03,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 18:57:03,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 18:57:03,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 18:57:03,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 18:57:03,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 18:57:03,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 18:57:03,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 18:57:03,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 18:57:03,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 18:57:03,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 18:57:03,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 18:57:03,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 18:57:03,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 18:57:03,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 18:57:03,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 18:57:03,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 18:57:03,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 18:57:03,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 18:57:03,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 18:57:03,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 18:57:03,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 18:57:03,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 18:57:03,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 18:57:03,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 18:57:03,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 18:57:03,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 18:57:03,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 18:57:03,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 18:57:03,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 18:57:03,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 18:57:03,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 18:57:03,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 18:57:03,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 18:57:03,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 18:57:03,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 18:57:03,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 18:57:03,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 18:57:03,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 18:57:03,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 18:57:03,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 18:57:03,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 18:57:03,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 18:57:03,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 18:57:03,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 18:57:03,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 18:57:03,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 18:57:03,253 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 18:57:03,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 18:57:03,254 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 18:57:03,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 18:57:03,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 18:57:03,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 18:57:03,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 18:57:03,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 18:57:03,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 18:57:03,255 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 18:57:03,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 18:57:03,256 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 18:57:03,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 18:57:03,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 18:57:03,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 18:57:03,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 18:57:03,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:57:03,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 18:57:03,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 18:57:03,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 18:57:03,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 18:57:03,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 18:57:03,258 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 18:57:03,258 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 18:57:03,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 18:57:03,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 18:57:03,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 [2021-12-17 18:57:03,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 18:57:03,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 18:57:03,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 18:57:03,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 18:57:03,506 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 18:57:03,507 INFO L432 ainManager$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 [2021-12-17 18:57:03,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd24f507e/8a7098648a35463098f60f3032d2d80a/FLAGe735ad9a3 [2021-12-17 18:57:04,239 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 18:57:04,240 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2021-12-17 18:57:04,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd24f507e/8a7098648a35463098f60f3032d2d80a/FLAGe735ad9a3 [2021-12-17 18:57:04,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd24f507e/8a7098648a35463098f60f3032d2d80a [2021-12-17 18:57:04,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 18:57:04,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 18:57:04,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 18:57:04,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 18:57:04,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 18:57:04,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:57:04" (1/1) ... [2021-12-17 18:57:04,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36888b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:04, skipping insertion in model container [2021-12-17 18:57:04,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:57:04" (1/1) ... [2021-12-17 18:57:04,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 18:57:04,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 18:57:06,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2021-12-17 18:57:06,302 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] [2021-12-17 18:57:06,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:57:06,507 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 18:57:07,251 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] [2021-12-17 18:57:07,257 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] [2021-12-17 18:57:07,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 18:57:07,318 INFO L208 MainTranslator]: Completed translation [2021-12-17 18:57:07,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07 WrapperNode [2021-12-17 18:57:07,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 18:57:07,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 18:57:07,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 18:57:07,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 18:57:07,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:07,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:07,814 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-17 18:57:07,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 18:57:07,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 18:57:07,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 18:57:07,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 18:57:07,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:07,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:07,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:07,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:08,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:08,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:08,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:08,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 18:57:08,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 18:57:08,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 18:57:08,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 18:57:08,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (1/1) ... [2021-12-17 18:57:08,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 18:57:08,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 18:57:08,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 18:57:08,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 18:57:08,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 18:57:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 18:57:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 18:57:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 18:57:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 18:57:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 18:57:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 18:57:08,384 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 18:57:08,384 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 18:57:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 18:57:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 18:57:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 18:57:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 18:57:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 18:57:08,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 18:57:08,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 18:57:08,519 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 18:57:08,523 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 18:57:13,368 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 18:57:13,390 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 18:57:13,390 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-17 18:57:13,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:57:13 BoogieIcfgContainer [2021-12-17 18:57:13,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 18:57:13,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 18:57:13,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 18:57:13,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 18:57:13,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:57:04" (1/3) ... [2021-12-17 18:57:13,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459807b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:57:13, skipping insertion in model container [2021-12-17 18:57:13,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:57:07" (2/3) ... [2021-12-17 18:57:13,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459807b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:57:13, skipping insertion in model container [2021-12-17 18:57:13,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:57:13" (3/3) ... [2021-12-17 18:57:13,399 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.07.cil-1.c [2021-12-17 18:57:13,402 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 18:57:13,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 18:57:13,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 18:57:13,441 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 18:57:13,441 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 18:57:13,472 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) [2021-12-17 18:57:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:13,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:13,483 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] [2021-12-17 18:57:13,483 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:13,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-17 18:57:13,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:13,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709329626] [2021-12-17 18:57:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:13,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:13,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709329626] [2021-12-17 18:57:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709329626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:13,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:13,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 18:57:13,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114035165] [2021-12-17 18:57:13,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:13,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 18:57:13,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:13,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 18:57:13,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 18:57:13,853 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) [2021-12-17 18:57:14,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:14,689 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-17 18:57:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 18:57:14,692 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 [2021-12-17 18:57:14,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:14,718 INFO L225 Difference]: With dead ends: 4955 [2021-12-17 18:57:14,718 INFO L226 Difference]: Without dead ends: 2460 [2021-12-17 18:57:14,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 18:57:14,732 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, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:14,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 18:57:14,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-17 18:57:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-17 18:57:14,849 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) [2021-12-17 18:57:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-17 18:57:14,856 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-17 18:57:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:14,857 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-17 18:57:14,857 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) [2021-12-17 18:57:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-17 18:57:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:14,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:14,865 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] [2021-12-17 18:57:14,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 18:57:14,865 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:14,867 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-17 18:57:14,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:14,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229935265] [2021-12-17 18:57:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:14,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:14,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:15,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:15,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:15,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229935265] [2021-12-17 18:57:15,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229935265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:15,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:15,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:57:15,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975829362] [2021-12-17 18:57:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:15,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:57:15,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:15,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:57:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:57:15,084 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) [2021-12-17 18:57:16,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:16,528 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-17 18:57:16,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 18:57:16,528 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 [2021-12-17 18:57:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:16,541 INFO L225 Difference]: With dead ends: 3029 [2021-12-17 18:57:16,541 INFO L226 Difference]: Without dead ends: 2792 [2021-12-17 18:57:16,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:16,547 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:16,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 18:57:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-17 18:57:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-17 18:57:16,738 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) [2021-12-17 18:57:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-17 18:57:16,748 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-17 18:57:16,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:16,749 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-17 18:57:16,750 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) [2021-12-17 18:57:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-17 18:57:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:16,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:16,756 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] [2021-12-17 18:57:16,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 18:57:16,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:16,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-17 18:57:16,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:16,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638803479] [2021-12-17 18:57:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:16,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:16,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:16,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:16,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:16,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:16,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638803479] [2021-12-17 18:57:16,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638803479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:16,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:16,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:16,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044246084] [2021-12-17 18:57:16,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:16,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:16,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:16,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:16,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:16,892 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) [2021-12-17 18:57:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:18,706 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2021-12-17 18:57:18,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:18,706 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 [2021-12-17 18:57:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:18,718 INFO L225 Difference]: With dead ends: 3617 [2021-12-17 18:57:18,718 INFO L226 Difference]: Without dead ends: 3134 [2021-12-17 18:57:18,720 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 [2021-12-17 18:57:18,721 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, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:18,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 21723 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 18:57:18,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-12-17 18:57:18,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2021-12-17 18:57:18,776 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) [2021-12-17 18:57:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2021-12-17 18:57:18,784 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2021-12-17 18:57:18,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:18,785 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2021-12-17 18:57:18,785 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) [2021-12-17 18:57:18,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2021-12-17 18:57:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:18,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:18,787 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] [2021-12-17 18:57:18,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 18:57:18,787 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-17 18:57:18,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:18,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254141647] [2021-12-17 18:57:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:18,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:18,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:18,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:18,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254141647] [2021-12-17 18:57:18,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254141647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:18,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:18,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:18,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89573501] [2021-12-17 18:57:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:18,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:18,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:18,870 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) [2021-12-17 18:57:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:20,781 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2021-12-17 18:57:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:20,782 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 [2021-12-17 18:57:20,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:20,795 INFO L225 Difference]: With dead ends: 4483 [2021-12-17 18:57:20,796 INFO L226 Difference]: Without dead ends: 3771 [2021-12-17 18:57:20,798 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 [2021-12-17 18:57:20,799 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:20,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 21711 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 18:57:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-12-17 18:57:20,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2021-12-17 18:57:20,885 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) [2021-12-17 18:57:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2021-12-17 18:57:20,896 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2021-12-17 18:57:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:20,897 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2021-12-17 18:57:20,897 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) [2021-12-17 18:57:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2021-12-17 18:57:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:20,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:20,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 18:57:20,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 18:57:20,900 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:20,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-17 18:57:20,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:20,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075873625] [2021-12-17 18:57:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:20,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:20,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:20,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:20,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075873625] [2021-12-17 18:57:20,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075873625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:20,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:20,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:20,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499220525] [2021-12-17 18:57:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:20,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:20,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:20,999 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) [2021-12-17 18:57:22,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:22,822 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2021-12-17 18:57:22,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:22,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (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 [2021-12-17 18:57:22,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:22,840 INFO L225 Difference]: With dead ends: 6150 [2021-12-17 18:57:22,840 INFO L226 Difference]: Without dead ends: 4979 [2021-12-17 18:57:22,845 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 [2021-12-17 18:57:22,845 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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 [2021-12-17 18:57:22,846 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] [2021-12-17 18:57:22,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-12-17 18:57:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2021-12-17 18:57:22,970 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) [2021-12-17 18:57:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2021-12-17 18:57:22,983 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2021-12-17 18:57:22,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:22,984 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2021-12-17 18:57:22,985 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) [2021-12-17 18:57:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2021-12-17 18:57:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:22,987 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:22,987 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] [2021-12-17 18:57:22,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 18:57:22,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-17 18:57:22,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:22,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850416555] [2021-12-17 18:57:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:22,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:23,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:23,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:23,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850416555] [2021-12-17 18:57:23,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850416555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:23,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:23,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:23,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621465541] [2021-12-17 18:57:23,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:23,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:23,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:23,128 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) [2021-12-17 18:57:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:24,840 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2021-12-17 18:57:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:24,841 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 [2021-12-17 18:57:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:24,868 INFO L225 Difference]: With dead ends: 9483 [2021-12-17 18:57:24,869 INFO L226 Difference]: Without dead ends: 7393 [2021-12-17 18:57:24,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 18:57:24,879 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:24,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21703 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:57:24,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2021-12-17 18:57:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2021-12-17 18:57:25,067 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) [2021-12-17 18:57:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2021-12-17 18:57:25,085 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2021-12-17 18:57:25,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:25,085 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2021-12-17 18:57:25,086 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) [2021-12-17 18:57:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2021-12-17 18:57:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:25,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:25,089 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] [2021-12-17 18:57:25,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 18:57:25,089 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:25,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:25,090 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-17 18:57:25,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:25,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882223398] [2021-12-17 18:57:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:25,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:25,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:25,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:25,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882223398] [2021-12-17 18:57:25,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882223398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:25,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:25,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:25,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11604577] [2021-12-17 18:57:25,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:25,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:25,214 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) [2021-12-17 18:57:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:27,191 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2021-12-17 18:57:27,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 18:57:27,191 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 [2021-12-17 18:57:27,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:27,230 INFO L225 Difference]: With dead ends: 16148 [2021-12-17 18:57:27,230 INFO L226 Difference]: Without dead ends: 12215 [2021-12-17 18:57:27,243 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 [2021-12-17 18:57:27,244 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 [2021-12-17 18:57:27,244 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] [2021-12-17 18:57:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2021-12-17 18:57:27,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2021-12-17 18:57:27,516 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) [2021-12-17 18:57:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2021-12-17 18:57:27,540 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2021-12-17 18:57:27,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:27,542 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2021-12-17 18:57:27,542 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) [2021-12-17 18:57:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2021-12-17 18:57:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:27,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:27,548 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] [2021-12-17 18:57:27,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 18:57:27,548 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:27,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-17 18:57:27,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:27,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540945241] [2021-12-17 18:57:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:27,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:27,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:27,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540945241] [2021-12-17 18:57:27,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540945241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:27,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:27,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:27,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997413065] [2021-12-17 18:57:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:27,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:27,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:27,682 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) [2021-12-17 18:57:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:28,711 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2021-12-17 18:57:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:57:28,711 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 [2021-12-17 18:57:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:28,744 INFO L225 Difference]: With dead ends: 19942 [2021-12-17 18:57:28,744 INFO L226 Difference]: Without dead ends: 12310 [2021-12-17 18:57:28,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:28,763 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:28,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16707 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 18:57:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2021-12-17 18:57:29,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2021-12-17 18:57:29,040 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) [2021-12-17 18:57:29,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2021-12-17 18:57:29,061 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2021-12-17 18:57:29,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:29,061 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2021-12-17 18:57:29,061 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) [2021-12-17 18:57:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2021-12-17 18:57:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:29,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:29,067 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] [2021-12-17 18:57:29,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 18:57:29,068 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:29,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-17 18:57:29,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:29,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708181886] [2021-12-17 18:57:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:29,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:29,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:29,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708181886] [2021-12-17 18:57:29,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708181886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:29,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:29,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:29,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480793568] [2021-12-17 18:57:29,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:29,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:29,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:29,160 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) [2021-12-17 18:57:30,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:30,141 INFO L93 Difference]: Finished difference Result 19908 states and 32037 transitions. [2021-12-17 18:57:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:57:30,142 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 [2021-12-17 18:57:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:30,177 INFO L225 Difference]: With dead ends: 19908 [2021-12-17 18:57:30,177 INFO L226 Difference]: Without dead ends: 12276 [2021-12-17 18:57:30,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:30,199 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4772 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2021-12-17 18:57:30,199 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] [2021-12-17 18:57:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2021-12-17 18:57:30,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 9768. [2021-12-17 18:57:30,696 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) [2021-12-17 18:57:30,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15809 transitions. [2021-12-17 18:57:30,722 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15809 transitions. Word has length 123 [2021-12-17 18:57:30,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:30,722 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15809 transitions. [2021-12-17 18:57:30,722 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) [2021-12-17 18:57:30,722 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15809 transitions. [2021-12-17 18:57:30,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:30,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:30,728 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] [2021-12-17 18:57:30,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 18:57:30,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:30,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-17 18:57:30,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:30,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83860216] [2021-12-17 18:57:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:30,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:30,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:30,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:30,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:30,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:30,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83860216] [2021-12-17 18:57:30,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83860216] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:30,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:30,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:30,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920854712] [2021-12-17 18:57:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:30,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:30,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:30,823 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) [2021-12-17 18:57:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:33,450 INFO L93 Difference]: Finished difference Result 32418 states and 51321 transitions. [2021-12-17 18:57:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:57:33,450 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 [2021-12-17 18:57:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:33,515 INFO L225 Difference]: With dead ends: 32418 [2021-12-17 18:57:33,515 INFO L226 Difference]: Without dead ends: 24786 [2021-12-17 18:57:33,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:57:33,538 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 [2021-12-17 18:57:33,539 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] [2021-12-17 18:57:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24786 states. [2021-12-17 18:57:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24786 to 17038. [2021-12-17 18:57:34,187 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) [2021-12-17 18:57:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17038 states to 17038 states and 27299 transitions. [2021-12-17 18:57:34,228 INFO L78 Accepts]: Start accepts. Automaton has 17038 states and 27299 transitions. Word has length 123 [2021-12-17 18:57:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:34,228 INFO L470 AbstractCegarLoop]: Abstraction has 17038 states and 27299 transitions. [2021-12-17 18:57:34,229 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) [2021-12-17 18:57:34,229 INFO L276 IsEmpty]: Start isEmpty. Operand 17038 states and 27299 transitions. [2021-12-17 18:57:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:34,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:34,237 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] [2021-12-17 18:57:34,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 18:57:34,238 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-17 18:57:34,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:34,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667841277] [2021-12-17 18:57:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:34,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:34,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:34,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667841277] [2021-12-17 18:57:34,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667841277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:34,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:34,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:34,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915106738] [2021-12-17 18:57:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:34,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:34,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:34,322 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) [2021-12-17 18:57:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:35,808 INFO L93 Difference]: Finished difference Result 36556 states and 58724 transitions. [2021-12-17 18:57:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:57:35,809 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 [2021-12-17 18:57:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:35,876 INFO L225 Difference]: With dead ends: 36556 [2021-12-17 18:57:35,876 INFO L226 Difference]: Without dead ends: 21654 [2021-12-17 18:57:35,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:35,912 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 4771 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2021-12-17 18:57:35,912 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] [2021-12-17 18:57:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21654 states. [2021-12-17 18:57:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21654 to 17038. [2021-12-17 18:57:36,752 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) [2021-12-17 18:57:36,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17038 states to 17038 states and 27234 transitions. [2021-12-17 18:57:36,792 INFO L78 Accepts]: Start accepts. Automaton has 17038 states and 27234 transitions. Word has length 123 [2021-12-17 18:57:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:36,793 INFO L470 AbstractCegarLoop]: Abstraction has 17038 states and 27234 transitions. [2021-12-17 18:57:36,793 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) [2021-12-17 18:57:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17038 states and 27234 transitions. [2021-12-17 18:57:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:36,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:36,802 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] [2021-12-17 18:57:36,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 18:57:36,802 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:36,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-17 18:57:36,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:36,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988094569] [2021-12-17 18:57:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:36,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:36,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:36,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:36,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:36,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:36,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988094569] [2021-12-17 18:57:36,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988094569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:36,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:36,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:36,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640954664] [2021-12-17 18:57:36,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:36,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:36,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:36,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:36,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:36,880 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) [2021-12-17 18:57:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:40,530 INFO L93 Difference]: Finished difference Result 59560 states and 94345 transitions. [2021-12-17 18:57:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:57:40,530 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 [2021-12-17 18:57:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:40,659 INFO L225 Difference]: With dead ends: 59560 [2021-12-17 18:57:40,659 INFO L226 Difference]: Without dead ends: 44658 [2021-12-17 18:57:40,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:57:40,704 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 5079 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:40,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5101 Valid, 21656 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 18:57:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44658 states. [2021-12-17 18:57:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44658 to 31764. [2021-12-17 18:57:42,334 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) [2021-12-17 18:57:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 50912 transitions. [2021-12-17 18:57:42,409 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 50912 transitions. Word has length 123 [2021-12-17 18:57:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:42,409 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 50912 transitions. [2021-12-17 18:57:42,410 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) [2021-12-17 18:57:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 50912 transitions. [2021-12-17 18:57:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:42,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:42,426 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] [2021-12-17 18:57:42,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 18:57:42,427 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:42,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:42,427 INFO L85 PathProgramCache]: Analyzing trace with hash 815896172, now seen corresponding path program 1 times [2021-12-17 18:57:42,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:42,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565077264] [2021-12-17 18:57:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:42,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:42,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:42,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:42,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:42,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:42,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565077264] [2021-12-17 18:57:42,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565077264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:42,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:42,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:42,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858451099] [2021-12-17 18:57:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:42,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:42,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:42,526 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) [2021-12-17 18:57:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:45,276 INFO L93 Difference]: Finished difference Result 69972 states and 113447 transitions. [2021-12-17 18:57:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:57:45,276 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 [2021-12-17 18:57:45,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:45,478 INFO L225 Difference]: With dead ends: 69972 [2021-12-17 18:57:45,478 INFO L226 Difference]: Without dead ends: 40344 [2021-12-17 18:57:45,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:45,524 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 4664 mSDsluCounter, 16442 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 18:57:45,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 20774 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 18:57:45,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40344 states. [2021-12-17 18:57:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40344 to 31764. [2021-12-17 18:57:46,963 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) [2021-12-17 18:57:47,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 50783 transitions. [2021-12-17 18:57:47,045 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 50783 transitions. Word has length 123 [2021-12-17 18:57:47,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:47,046 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 50783 transitions. [2021-12-17 18:57:47,046 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) [2021-12-17 18:57:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 50783 transitions. [2021-12-17 18:57:47,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:47,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:47,061 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] [2021-12-17 18:57:47,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 18:57:47,062 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash -67612818, now seen corresponding path program 1 times [2021-12-17 18:57:47,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:47,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455150490] [2021-12-17 18:57:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:47,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:47,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:47,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455150490] [2021-12-17 18:57:47,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455150490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:47,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:47,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:47,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467094275] [2021-12-17 18:57:47,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:47,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:47,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:47,144 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) [2021-12-17 18:57:49,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:49,954 INFO L93 Difference]: Finished difference Result 69842 states and 112800 transitions. [2021-12-17 18:57:49,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 18:57:49,955 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 [2021-12-17 18:57:49,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:50,072 INFO L225 Difference]: With dead ends: 69842 [2021-12-17 18:57:50,073 INFO L226 Difference]: Without dead ends: 40214 [2021-12-17 18:57:50,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 18:57:50,127 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 [2021-12-17 18:57:50,127 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] [2021-12-17 18:57:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40214 states. [2021-12-17 18:57:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40214 to 31764. [2021-12-17 18:57:51,757 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) [2021-12-17 18:57:51,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 50654 transitions. [2021-12-17 18:57:51,839 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 50654 transitions. Word has length 123 [2021-12-17 18:57:51,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:57:51,840 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 50654 transitions. [2021-12-17 18:57:51,841 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) [2021-12-17 18:57:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 50654 transitions. [2021-12-17 18:57:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:57:51,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:57:51,854 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] [2021-12-17 18:57:51,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 18:57:51,855 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:57:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:57:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash -96113108, now seen corresponding path program 1 times [2021-12-17 18:57:51,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:57:51,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571885659] [2021-12-17 18:57:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:57:51,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:57:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:57:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:57:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:57:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:57:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:51,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:57:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:57:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:57:51,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:57:51,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571885659] [2021-12-17 18:57:51,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571885659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:57:51,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:57:51,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 18:57:51,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708247030] [2021-12-17 18:57:51,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:57:51,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 18:57:51,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:57:51,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 18:57:51,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 18:57:51,948 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) [2021-12-17 18:57:57,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 18:57:57,338 INFO L93 Difference]: Finished difference Result 108334 states and 173205 transitions. [2021-12-17 18:57:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 18:57:57,339 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 [2021-12-17 18:57:57,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 18:57:57,572 INFO L225 Difference]: With dead ends: 108334 [2021-12-17 18:57:57,572 INFO L226 Difference]: Without dead ends: 78706 [2021-12-17 18:57:57,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 18:57:57,645 INFO L933 BasicCegarLoop]: 4530 mSDtfsCounter, 4907 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2021-12-17 18:57:57,646 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] [2021-12-17 18:57:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78706 states. [2021-12-17 18:58:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78706 to 61536. [2021-12-17 18:58:00,972 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) [2021-12-17 18:58:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61536 states to 61536 states and 99660 transitions. [2021-12-17 18:58:01,148 INFO L78 Accepts]: Start accepts. Automaton has 61536 states and 99660 transitions. Word has length 123 [2021-12-17 18:58:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 18:58:01,148 INFO L470 AbstractCegarLoop]: Abstraction has 61536 states and 99660 transitions. [2021-12-17 18:58:01,148 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) [2021-12-17 18:58:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 61536 states and 99660 transitions. [2021-12-17 18:58:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-17 18:58:01,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 18:58:01,174 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] [2021-12-17 18:58:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 18:58:01,174 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 18:58:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 18:58:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1780950122, now seen corresponding path program 1 times [2021-12-17 18:58:01,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 18:58:01,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838872996] [2021-12-17 18:58:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 18:58:01,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 18:58:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 18:58:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 18:58:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 18:58:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 18:58:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 18:58:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 18:58:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 18:58:01,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 18:58:01,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838872996] [2021-12-17 18:58:01,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838872996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 18:58:01,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 18:58:01,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 18:58:01,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139949811] [2021-12-17 18:58:01,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 18:58:01,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 18:58:01,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 18:58:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 18:58:01,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 18:58:01,298 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)