./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/systemc/token_ring.05.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 a75784c0f203c4a6f14019aef9d9a89ba63a0efbe594dc5cdecfb5d06e7619f2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:03:48,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:03:48,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:03:48,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:03:48,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:03:48,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:03:48,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:03:48,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:03:48,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:03:48,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:03:48,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:03:48,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:03:48,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:03:48,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:03:48,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:03:48,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:03:48,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:03:48,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:03:48,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:03:48,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:03:48,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:03:48,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:03:48,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:03:48,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:03:48,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:03:48,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:03:48,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:03:48,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:03:48,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:03:48,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:03:48,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:03:48,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:03:48,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:03:48,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:03:48,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:03:48,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:03:48,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:03:48,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:03:48,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:03:48,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:03:48,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:03:48,800 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:03:48,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:03:48,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:03:48,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:03:48,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:03:48,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:03:48,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:03:48,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:03:48,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:03:48,829 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:03:48,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:03:48,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:03:48,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:03:48,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:03:48,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:03:48,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:03:48,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:03:48,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:03:48,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:03:48,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:03:48,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:03:48,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:03:48,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:03:48,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:03:48,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:03:48,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:03:48,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:03:48,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:03:48,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:03:48,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:03:48,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:03:48,838 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:03:48,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:03:48,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:03:48,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75784c0f203c4a6f14019aef9d9a89ba63a0efbe594dc5cdecfb5d06e7619f2 [2021-12-28 01:03:49,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:03:49,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:03:49,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:03:49,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:03:49,108 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:03:49,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.05.cil-1.c [2021-12-28 01:03:49,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f49f9e6/072933b1c8e446458663d093d2c45a1b/FLAG777f6dcbb [2021-12-28 01:03:49,513 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:03:49,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-1.c [2021-12-28 01:03:49,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f49f9e6/072933b1c8e446458663d093d2c45a1b/FLAG777f6dcbb [2021-12-28 01:03:49,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f49f9e6/072933b1c8e446458663d093d2c45a1b [2021-12-28 01:03:49,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:03:49,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:03:49,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:03:49,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:03:49,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:03:49,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:03:49" (1/1) ... [2021-12-28 01:03:49,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5226062d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:49, skipping insertion in model container [2021-12-28 01:03:49,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:03:49" (1/1) ... [2021-12-28 01:03:49,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:03:49,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:03:50,074 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/systemc/token_ring.05.cil-1.c[671,684] [2021-12-28 01:03:50,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:03:50,144 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:03:50,175 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/systemc/token_ring.05.cil-1.c[671,684] [2021-12-28 01:03:50,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:03:50,227 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:03:50,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50 WrapperNode [2021-12-28 01:03:50,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:03:50,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:03:50,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:03:50,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:03:50,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,275 INFO L137 Inliner]: procedures = 38, calls = 46, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 447 [2021-12-28 01:03:50,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:03:50,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:03:50,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:03:50,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:03:50,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:03:50,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:03:50,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:03:50,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:03:50,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (1/1) ... [2021-12-28 01:03:50,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:03:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:03:50,380 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) [2021-12-28 01:03:50,403 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 [2021-12-28 01:03:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:03:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:03:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:03:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:03:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:03:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:03:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:03:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:03:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:03:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:03:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:03:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:03:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:03:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:03:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:03:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:03:50,475 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:03:50,476 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:03:50,911 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:03:50,918 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:03:50,918 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-28 01:03:50,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:03:50 BoogieIcfgContainer [2021-12-28 01:03:50,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:03:50,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:03:50,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:03:50,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:03:50,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:03:49" (1/3) ... [2021-12-28 01:03:50,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa2e0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:03:50, skipping insertion in model container [2021-12-28 01:03:50,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:03:50" (2/3) ... [2021-12-28 01:03:50,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa2e0fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:03:50, skipping insertion in model container [2021-12-28 01:03:50,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:03:50" (3/3) ... [2021-12-28 01:03:50,927 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-1.c [2021-12-28 01:03:50,931 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:03:50,931 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 01:03:50,962 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:03:50,966 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 [2021-12-28 01:03:50,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 01:03:50,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 180 states have (on average 1.6222222222222222) internal successors, (292), 182 states have internal predecessors, (292), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-28 01:03:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:03:51,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:03:51,009 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] [2021-12-28 01:03:51,010 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:03:51,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:03:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1431654202, now seen corresponding path program 1 times [2021-12-28 01:03:51,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:03:51,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536294626] [2021-12-28 01:03:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:03:51,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:03:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:03:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:51,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:03:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:03:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:51,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:03:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:51,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:03:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:03:51,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:03:51,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536294626] [2021-12-28 01:03:51,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536294626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:03:51,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:03:51,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:03:51,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679504468] [2021-12-28 01:03:51,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:03:51,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:03:51,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:03:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:03:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:03:51,423 INFO L87 Difference]: Start difference. First operand has 207 states, 180 states have (on average 1.6222222222222222) internal successors, (292), 182 states have internal predecessors, (292), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-12-28 01:03:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:03:52,545 INFO L93 Difference]: Finished difference Result 727 states and 1179 transitions. [2021-12-28 01:03:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:03:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 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 100 [2021-12-28 01:03:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:03:52,557 INFO L225 Difference]: With dead ends: 727 [2021-12-28 01:03:52,557 INFO L226 Difference]: Without dead ends: 525 [2021-12-28 01:03:52,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:03:52,563 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 753 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:03:52,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 900 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:03:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-28 01:03:52,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 396. [2021-12-28 01:03:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 349 states have (on average 1.5444126074498568) internal successors, (539), 351 states have internal predecessors, (539), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-12-28 01:03:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 608 transitions. [2021-12-28 01:03:52,618 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 608 transitions. Word has length 100 [2021-12-28 01:03:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:03:52,618 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 608 transitions. [2021-12-28 01:03:52,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-12-28 01:03:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 608 transitions. [2021-12-28 01:03:52,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:03:52,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:03:52,622 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] [2021-12-28 01:03:52,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:03:52,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:03:52,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:03:52,623 INFO L85 PathProgramCache]: Analyzing trace with hash -285230402, now seen corresponding path program 1 times [2021-12-28 01:03:52,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:03:52,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669932555] [2021-12-28 01:03:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:03:52,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:03:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:03:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:52,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:03:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:52,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:03:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:03:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:03:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:03:52,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:03:52,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669932555] [2021-12-28 01:03:52,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669932555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:03:52,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:03:52,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:03:52,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691011120] [2021-12-28 01:03:52,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:03:52,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:03:52,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:03:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:03:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:03:52,763 INFO L87 Difference]: Start difference. First operand 396 states and 608 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:03:53,985 INFO L93 Difference]: Finished difference Result 1172 states and 1826 transitions. [2021-12-28 01:03:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:03:53,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:03:53,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:03:53,989 INFO L225 Difference]: With dead ends: 1172 [2021-12-28 01:03:53,989 INFO L226 Difference]: Without dead ends: 789 [2021-12-28 01:03:53,990 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 [2021-12-28 01:03:53,991 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 750 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:03:53,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 1485 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:03:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-12-28 01:03:54,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 577. [2021-12-28 01:03:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 509 states have (on average 1.536345776031434) internal successors, (782), 512 states have internal predecessors, (782), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-28 01:03:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 881 transitions. [2021-12-28 01:03:54,023 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 881 transitions. Word has length 100 [2021-12-28 01:03:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:03:54,023 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 881 transitions. [2021-12-28 01:03:54,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 881 transitions. [2021-12-28 01:03:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:03:54,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:03:54,025 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] [2021-12-28 01:03:54,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:03:54,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:03:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:03:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2130605948, now seen corresponding path program 1 times [2021-12-28 01:03:54,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:03:54,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755591701] [2021-12-28 01:03:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:03:54,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:03:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:03:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:03:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:54,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:03:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:54,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:03:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:03:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:03:54,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:03:54,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755591701] [2021-12-28 01:03:54,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755591701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:03:54,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:03:54,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:03:54,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667030626] [2021-12-28 01:03:54,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:03:54,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:03:54,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:03:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:03:54,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:03:54,107 INFO L87 Difference]: Start difference. First operand 577 states and 881 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:03:55,248 INFO L93 Difference]: Finished difference Result 1846 states and 2867 transitions. [2021-12-28 01:03:55,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:03:55,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:03:55,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:03:55,256 INFO L225 Difference]: With dead ends: 1846 [2021-12-28 01:03:55,257 INFO L226 Difference]: Without dead ends: 1282 [2021-12-28 01:03:55,258 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 [2021-12-28 01:03:55,264 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 747 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 1610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:03:55,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 1477 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:03:55,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-12-28 01:03:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 940. [2021-12-28 01:03:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 830 states have (on average 1.5289156626506024) internal successors, (1269), 835 states have internal predecessors, (1269), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-12-28 01:03:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1432 transitions. [2021-12-28 01:03:55,329 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1432 transitions. Word has length 100 [2021-12-28 01:03:55,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:03:55,331 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1432 transitions. [2021-12-28 01:03:55,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1432 transitions. [2021-12-28 01:03:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:03:55,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:03:55,338 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] [2021-12-28 01:03:55,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:03:55,338 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:03:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:03:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash -839505154, now seen corresponding path program 1 times [2021-12-28 01:03:55,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:03:55,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136317399] [2021-12-28 01:03:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:03:55,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:03:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:03:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:03:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:03:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:03:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:03:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:03:55,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:03:55,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136317399] [2021-12-28 01:03:55,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136317399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:03:55,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:03:55,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:03:55,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714892541] [2021-12-28 01:03:55,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:03:55,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:03:55,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:03:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:03:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:03:55,468 INFO L87 Difference]: Start difference. First operand 940 states and 1432 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:56,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:03:56,705 INFO L93 Difference]: Finished difference Result 3145 states and 4866 transitions. [2021-12-28 01:03:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:03:56,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:03:56,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:03:56,714 INFO L225 Difference]: With dead ends: 3145 [2021-12-28 01:03:56,714 INFO L226 Difference]: Without dead ends: 2218 [2021-12-28 01:03:56,717 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 [2021-12-28 01:03:56,717 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 743 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:03:56,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1473 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:03:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2021-12-28 01:03:56,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1667. [2021-12-28 01:03:56,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1473 states have (on average 1.5227427019687712) internal successors, (2243), 1482 states have internal predecessors, (2243), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2021-12-28 01:03:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2540 transitions. [2021-12-28 01:03:56,803 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2540 transitions. Word has length 100 [2021-12-28 01:03:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:03:56,804 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2540 transitions. [2021-12-28 01:03:56,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2540 transitions. [2021-12-28 01:03:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:03:56,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:03:56,806 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] [2021-12-28 01:03:56,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:03:56,806 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:03:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:03:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash 727252796, now seen corresponding path program 1 times [2021-12-28 01:03:56,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:03:56,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341333610] [2021-12-28 01:03:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:03:56,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:03:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:03:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:03:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:03:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:03:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:03:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:03:56,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:03:56,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341333610] [2021-12-28 01:03:56,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341333610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:03:56,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:03:56,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:03:56,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795201236] [2021-12-28 01:03:56,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:03:56,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:03:56,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:03:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:03:56,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:03:56,905 INFO L87 Difference]: Start difference. First operand 1667 states and 2540 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:58,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:03:58,082 INFO L93 Difference]: Finished difference Result 5742 states and 8880 transitions. [2021-12-28 01:03:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:03:58,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:03:58,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:03:58,113 INFO L225 Difference]: With dead ends: 5742 [2021-12-28 01:03:58,113 INFO L226 Difference]: Without dead ends: 4088 [2021-12-28 01:03:58,116 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 [2021-12-28 01:03:58,117 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 742 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:03:58,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1467 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:03:58,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2021-12-28 01:03:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 3126. [2021-12-28 01:03:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3126 states, 2764 states have (on average 1.518451519536903) internal successors, (4197), 2781 states have internal predecessors, (4197), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2021-12-28 01:03:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4780 transitions. [2021-12-28 01:03:58,232 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4780 transitions. Word has length 100 [2021-12-28 01:03:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:03:58,233 INFO L470 AbstractCegarLoop]: Abstraction has 3126 states and 4780 transitions. [2021-12-28 01:03:58,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:58,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4780 transitions. [2021-12-28 01:03:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:03:58,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:03:58,236 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] [2021-12-28 01:03:58,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:03:58,236 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:03:58,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:03:58,236 INFO L85 PathProgramCache]: Analyzing trace with hash -330585282, now seen corresponding path program 1 times [2021-12-28 01:03:58,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:03:58,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771545610] [2021-12-28 01:03:58,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:03:58,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:03:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:03:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:58,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:03:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:58,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:03:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:03:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:03:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:03:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:03:58,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:03:58,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771545610] [2021-12-28 01:03:58,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771545610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:03:58,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:03:58,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:03:58,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806808747] [2021-12-28 01:03:58,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:03:58,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:03:58,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:03:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:03:58,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:03:58,346 INFO L87 Difference]: Start difference. First operand 3126 states and 4780 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:03:59,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:03:59,761 INFO L93 Difference]: Finished difference Result 12184 states and 18828 transitions. [2021-12-28 01:03:59,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:03:59,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:03:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:03:59,798 INFO L225 Difference]: With dead ends: 12184 [2021-12-28 01:03:59,798 INFO L226 Difference]: Without dead ends: 9071 [2021-12-28 01:03:59,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:03:59,809 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1007 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:03:59,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 1021 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:03:59,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9071 states. [2021-12-28 01:04:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9071 to 6026. [2021-12-28 01:04:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 5344 states have (on average 1.5203967065868262) internal successors, (8125), 5377 states have internal predecessors, (8125), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2021-12-28 01:04:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 9302 transitions. [2021-12-28 01:04:00,097 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 9302 transitions. Word has length 100 [2021-12-28 01:04:00,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:00,097 INFO L470 AbstractCegarLoop]: Abstraction has 6026 states and 9302 transitions. [2021-12-28 01:04:00,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:00,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 9302 transitions. [2021-12-28 01:04:00,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:04:00,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:00,103 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] [2021-12-28 01:04:00,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:04:00,103 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:00,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:00,104 INFO L85 PathProgramCache]: Analyzing trace with hash -90345536, now seen corresponding path program 1 times [2021-12-28 01:04:00,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:00,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225881313] [2021-12-28 01:04:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:00,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:04:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:04:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:04:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:00,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:00,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225881313] [2021-12-28 01:04:00,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225881313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:00,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:00,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:00,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189819766] [2021-12-28 01:04:00,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:00,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:00,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:00,226 INFO L87 Difference]: Start difference. First operand 6026 states and 9302 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:02,113 INFO L93 Difference]: Finished difference Result 23310 states and 36288 transitions. [2021-12-28 01:04:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:04:02,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:04:02,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:02,207 INFO L225 Difference]: With dead ends: 23310 [2021-12-28 01:04:02,207 INFO L226 Difference]: Without dead ends: 17297 [2021-12-28 01:04:02,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:04:02,228 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 778 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:02,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1516 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:04:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17297 states. [2021-12-28 01:04:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17297 to 11647. [2021-12-28 01:04:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11647 states, 10341 states have (on average 1.5216129968088192) internal successors, (15735), 10406 states have internal predecessors, (15735), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2021-12-28 01:04:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 18230 transitions. [2021-12-28 01:04:02,812 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 18230 transitions. Word has length 100 [2021-12-28 01:04:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:02,812 INFO L470 AbstractCegarLoop]: Abstraction has 11647 states and 18230 transitions. [2021-12-28 01:04:02,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 18230 transitions. [2021-12-28 01:04:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:04:02,822 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:02,822 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] [2021-12-28 01:04:02,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:04:02,822 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:02,825 INFO L85 PathProgramCache]: Analyzing trace with hash 748688126, now seen corresponding path program 1 times [2021-12-28 01:04:02,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:02,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198012288] [2021-12-28 01:04:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:02,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:04:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:04:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:04:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:02,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:02,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198012288] [2021-12-28 01:04:02,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198012288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:02,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:02,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:02,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764989707] [2021-12-28 01:04:02,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:02,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:02,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:02,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:02,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:02,911 INFO L87 Difference]: Start difference. First operand 11647 states and 18230 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:05,291 INFO L93 Difference]: Finished difference Result 44489 states and 70110 transitions. [2021-12-28 01:04:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:04:05,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:04:05,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:05,413 INFO L225 Difference]: With dead ends: 44489 [2021-12-28 01:04:05,413 INFO L226 Difference]: Without dead ends: 32855 [2021-12-28 01:04:05,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:04:05,454 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 870 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:05,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [888 Valid, 1439 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:04:05,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32855 states. [2021-12-28 01:04:06,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32855 to 23016. [2021-12-28 01:04:06,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23016 states, 20494 states have (on average 1.5243973846003709) internal successors, (31241), 20623 states have internal predecessors, (31241), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2021-12-28 01:04:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23016 states to 23016 states and 36794 transitions. [2021-12-28 01:04:06,659 INFO L78 Accepts]: Start accepts. Automaton has 23016 states and 36794 transitions. Word has length 100 [2021-12-28 01:04:06,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:06,659 INFO L470 AbstractCegarLoop]: Abstraction has 23016 states and 36794 transitions. [2021-12-28 01:04:06,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 23016 states and 36794 transitions. [2021-12-28 01:04:06,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:04:06,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:06,679 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] [2021-12-28 01:04:06,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:04:06,680 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:06,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:06,681 INFO L85 PathProgramCache]: Analyzing trace with hash 775753728, now seen corresponding path program 1 times [2021-12-28 01:04:06,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:06,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676391526] [2021-12-28 01:04:06,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:06,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:04:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:04:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:04:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:06,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:06,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676391526] [2021-12-28 01:04:06,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676391526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:06,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:06,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:06,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007047107] [2021-12-28 01:04:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:06,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:06,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:06,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:06,783 INFO L87 Difference]: Start difference. First operand 23016 states and 36794 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:10,588 INFO L93 Difference]: Finished difference Result 86080 states and 138516 transitions. [2021-12-28 01:04:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:04:10,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:04:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:10,872 INFO L225 Difference]: With dead ends: 86080 [2021-12-28 01:04:10,873 INFO L226 Difference]: Without dead ends: 63077 [2021-12-28 01:04:10,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:04:10,949 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 830 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:10,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 1434 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:04:10,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63077 states. [2021-12-28 01:04:13,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63077 to 45689. [2021-12-28 01:04:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45689 states, 40799 states have (on average 1.527365866810461) internal successors, (62315), 41056 states have internal predecessors, (62315), 3091 states have call successors, (3091), 1542 states have call predecessors, (3091), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2021-12-28 01:04:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45689 states to 45689 states and 75314 transitions. [2021-12-28 01:04:13,523 INFO L78 Accepts]: Start accepts. Automaton has 45689 states and 75314 transitions. Word has length 100 [2021-12-28 01:04:13,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:13,524 INFO L470 AbstractCegarLoop]: Abstraction has 45689 states and 75314 transitions. [2021-12-28 01:04:13,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 45689 states and 75314 transitions. [2021-12-28 01:04:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:04:13,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:13,562 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] [2021-12-28 01:04:13,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:04:13,562 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1301583170, now seen corresponding path program 1 times [2021-12-28 01:04:13,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:13,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802587539] [2021-12-28 01:04:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:13,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:04:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:04:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:04:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:13,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:13,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802587539] [2021-12-28 01:04:13,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802587539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:13,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:13,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:13,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138120135] [2021-12-28 01:04:13,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:13,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:13,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:13,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:13,644 INFO L87 Difference]: Start difference. First operand 45689 states and 75314 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:20,685 INFO L93 Difference]: Finished difference Result 166895 states and 277386 transitions. [2021-12-28 01:04:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:04:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:04:20,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:21,185 INFO L225 Difference]: With dead ends: 166895 [2021-12-28 01:04:21,185 INFO L226 Difference]: Without dead ends: 121219 [2021-12-28 01:04:21,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:04:21,310 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 746 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:21,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 1457 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 01:04:21,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121219 states. [2021-12-28 01:04:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121219 to 90906. [2021-12-28 01:04:25,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90906 states, 81408 states have (on average 1.530426985062893) internal successors, (124589), 81921 states have internal predecessors, (124589), 5907 states have call successors, (5907), 3078 states have call predecessors, (5907), 3590 states have return successors, (26102), 6418 states have call predecessors, (26102), 5907 states have call successors, (26102) [2021-12-28 01:04:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90906 states to 90906 states and 156598 transitions. [2021-12-28 01:04:26,212 INFO L78 Accepts]: Start accepts. Automaton has 90906 states and 156598 transitions. Word has length 100 [2021-12-28 01:04:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:04:26,212 INFO L470 AbstractCegarLoop]: Abstraction has 90906 states and 156598 transitions. [2021-12-28 01:04:26,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 90906 states and 156598 transitions. [2021-12-28 01:04:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-28 01:04:26,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:04:26,285 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] [2021-12-28 01:04:26,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:04:26,285 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:04:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:04:26,286 INFO L85 PathProgramCache]: Analyzing trace with hash 432521280, now seen corresponding path program 1 times [2021-12-28 01:04:26,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:04:26,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211158920] [2021-12-28 01:04:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:04:26,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:04:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 01:04:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 01:04:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 01:04:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 01:04:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 01:04:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:04:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:04:26,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:04:26,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211158920] [2021-12-28 01:04:26,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211158920] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:04:26,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:04:26,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:04:26,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987162249] [2021-12-28 01:04:26,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:04:26,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:04:26,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:04:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:04:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:04:26,370 INFO L87 Difference]: Start difference. First operand 90906 states and 156598 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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) [2021-12-28 01:04:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:04:38,538 INFO L93 Difference]: Finished difference Result 323646 states and 564928 transitions. [2021-12-28 01:04:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:04:38,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 100 [2021-12-28 01:04:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:04:39,749 INFO L225 Difference]: With dead ends: 323646 [2021-12-28 01:04:39,749 INFO L226 Difference]: Without dead ends: 232753 [2021-12-28 01:04:40,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:04:40,028 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 750 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 01:04:40,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 1403 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 01:04:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232753 states.