./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 6c24879c 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-?-6c24879 [2022-07-12 06:33:43,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:33:43,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:33:43,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:33:43,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:33:43,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:33:43,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:33:43,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:33:43,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:33:43,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:33:43,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:33:43,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:33:43,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:33:43,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:33:43,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:33:43,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:33:43,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:33:43,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:33:43,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:33:43,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:33:43,615 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:33:43,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:33:43,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:33:43,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:33:43,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:33:43,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:33:43,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:33:43,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:33:43,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:33:43,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:33:43,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:33:43,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:33:43,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:33:43,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:33:43,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:33:43,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:33:43,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:33:43,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:33:43,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:33:43,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:33:43,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:33:43,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:33:43,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:33:43,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:33:43,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:33:43,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:33:43,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:33:43,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:33:43,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:33:43,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:33:43,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:33:43,655 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:33:43,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:33:43,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:33:43,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:33:43,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:33:43,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:33:43,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:33:43,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:33:43,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:33:43,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:33:43,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:33:43,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:33:43,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:33:43,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:33:43,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:33:43,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:33:43,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:33:43,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:33:43,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:33:43,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:33:43,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:33:43,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:33:43,659 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:33:43,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:33:43,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:33:43,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a75784c0f203c4a6f14019aef9d9a89ba63a0efbe594dc5cdecfb5d06e7619f2 [2022-07-12 06:33:43,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:33:43,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:33:43,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:33:43,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:33:43,904 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:33:43,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.05.cil-1.c [2022-07-12 06:33:43,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faebfe9c5/092e1fc9a5464844b16362f54e6df51a/FLAGcf2880412 [2022-07-12 06:33:44,341 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:33:44,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-1.c [2022-07-12 06:33:44,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faebfe9c5/092e1fc9a5464844b16362f54e6df51a/FLAGcf2880412 [2022-07-12 06:33:44,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faebfe9c5/092e1fc9a5464844b16362f54e6df51a [2022-07-12 06:33:44,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:33:44,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:33:44,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:33:44,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:33:44,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:33:44,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601a76a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44, skipping insertion in model container [2022-07-12 06:33:44,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:33:44,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:33:44,543 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] [2022-07-12 06:33:44,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:33:44,623 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:33:44,632 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] [2022-07-12 06:33:44,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:33:44,691 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:33:44,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44 WrapperNode [2022-07-12 06:33:44,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:33:44,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:33:44,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:33:44,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:33:44,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,746 INFO L137 Inliner]: procedures = 38, calls = 46, calls flagged for inlining = 22, calls inlined = 22, statements flattened = 447 [2022-07-12 06:33:44,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:33:44,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:33:44,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:33:44,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:33:44,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:33:44,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:33:44,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:33:44,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:33:44,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (1/1) ... [2022-07-12 06:33:44,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:33:44,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:33:44,851 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) [2022-07-12 06:33:44,853 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 [2022-07-12 06:33:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:33:44,882 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 06:33:44,883 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 06:33:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 06:33:44,883 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 06:33:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 06:33:44,883 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 06:33:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 06:33:44,883 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 06:33:44,883 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 06:33:44,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 06:33:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:33:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 06:33:44,884 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 06:33:44,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:33:44,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:33:44,938 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:33:44,939 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:33:45,251 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:33:45,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:33:45,258 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-12 06:33:45,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:33:45 BoogieIcfgContainer [2022-07-12 06:33:45,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:33:45,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:33:45,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:33:45,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:33:45,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:33:44" (1/3) ... [2022-07-12 06:33:45,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc21d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:33:45, skipping insertion in model container [2022-07-12 06:33:45,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:33:44" (2/3) ... [2022-07-12 06:33:45,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc21d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:33:45, skipping insertion in model container [2022-07-12 06:33:45,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:33:45" (3/3) ... [2022-07-12 06:33:45,274 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-1.c [2022-07-12 06:33:45,283 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:33:45,283 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:33:45,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:33:45,321 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@839b269, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5591b30 [2022-07-12 06:33:45,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:33:45,324 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) [2022-07-12 06:33:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:45,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:45,331 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:45,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1431654202, now seen corresponding path program 1 times [2022-07-12 06:33:45,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:45,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825258149] [2022-07-12 06:33:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:45,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:45,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:45,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:45,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:45,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825258149] [2022-07-12 06:33:45,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825258149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:45,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:45,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:33:45,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105538451] [2022-07-12 06:33:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:45,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:33:45,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:45,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:33:45,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:33:45,731 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) [2022-07-12 06:33:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:46,809 INFO L93 Difference]: Finished difference Result 727 states and 1179 transitions. [2022-07-12 06:33:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:33:46,811 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 [2022-07-12 06:33:46,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:46,821 INFO L225 Difference]: With dead ends: 727 [2022-07-12 06:33:46,821 INFO L226 Difference]: Without dead ends: 525 [2022-07-12 06:33:46,825 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:46,827 INFO L413 NwaCegarLoop]: 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 [2022-07-12 06:33:46,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 900 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:33:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-07-12 06:33:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 396. [2022-07-12 06:33:46,879 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) [2022-07-12 06:33:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 608 transitions. [2022-07-12 06:33:46,881 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 608 transitions. Word has length 100 [2022-07-12 06:33:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:46,882 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 608 transitions. [2022-07-12 06:33:46,882 INFO L496 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) [2022-07-12 06:33:46,882 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 608 transitions. [2022-07-12 06:33:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:46,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:46,885 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:46,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:33:46,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:46,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash -285230402, now seen corresponding path program 1 times [2022-07-12 06:33:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:46,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104270855] [2022-07-12 06:33:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:46,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:47,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:47,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:47,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104270855] [2022-07-12 06:33:47,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104270855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:47,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:47,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:33:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318519320] [2022-07-12 06:33:47,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:47,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:33:47,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:47,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:33:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:33:47,046 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) [2022-07-12 06:33:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:48,153 INFO L93 Difference]: Finished difference Result 1172 states and 1826 transitions. [2022-07-12 06:33:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:33:48,153 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 [2022-07-12 06:33:48,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:48,158 INFO L225 Difference]: With dead ends: 1172 [2022-07-12 06:33:48,158 INFO L226 Difference]: Without dead ends: 789 [2022-07-12 06:33:48,159 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:48,160 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 750 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:33:48,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1485 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:33:48,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-07-12 06:33:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 577. [2022-07-12 06:33:48,193 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) [2022-07-12 06:33:48,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 881 transitions. [2022-07-12 06:33:48,214 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 881 transitions. Word has length 100 [2022-07-12 06:33:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:48,215 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 881 transitions. [2022-07-12 06:33:48,215 INFO L496 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) [2022-07-12 06:33:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 881 transitions. [2022-07-12 06:33:48,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:48,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:48,218 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:48,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:33:48,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2130605948, now seen corresponding path program 1 times [2022-07-12 06:33:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:48,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129335431] [2022-07-12 06:33:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:48,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:48,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:48,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:48,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:48,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:48,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129335431] [2022-07-12 06:33:48,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129335431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:48,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:48,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:33:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766949251] [2022-07-12 06:33:48,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:48,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:33:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:48,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:33:48,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:33:48,303 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) [2022-07-12 06:33:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:49,427 INFO L93 Difference]: Finished difference Result 1846 states and 2867 transitions. [2022-07-12 06:33:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:33:49,428 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 [2022-07-12 06:33:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:49,434 INFO L225 Difference]: With dead ends: 1846 [2022-07-12 06:33:49,434 INFO L226 Difference]: Without dead ends: 1282 [2022-07-12 06:33:49,436 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:49,437 INFO L413 NwaCegarLoop]: 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 [2022-07-12 06:33:49,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1477 Invalid, 1610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:33:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-07-12 06:33:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 940. [2022-07-12 06:33:49,495 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) [2022-07-12 06:33:49,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1432 transitions. [2022-07-12 06:33:49,499 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1432 transitions. Word has length 100 [2022-07-12 06:33:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:49,499 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1432 transitions. [2022-07-12 06:33:49,500 INFO L496 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) [2022-07-12 06:33:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1432 transitions. [2022-07-12 06:33:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:49,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:49,502 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:33:49,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -839505154, now seen corresponding path program 1 times [2022-07-12 06:33:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:49,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285943889] [2022-07-12 06:33:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:49,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:49,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:49,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:49,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285943889] [2022-07-12 06:33:49,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285943889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:49,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:49,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:33:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922061382] [2022-07-12 06:33:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:49,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:33:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:33:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:33:49,579 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) [2022-07-12 06:33:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:50,591 INFO L93 Difference]: Finished difference Result 3145 states and 4866 transitions. [2022-07-12 06:33:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:33:50,592 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 [2022-07-12 06:33:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:50,617 INFO L225 Difference]: With dead ends: 3145 [2022-07-12 06:33:50,617 INFO L226 Difference]: Without dead ends: 2218 [2022-07-12 06:33:50,635 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:50,643 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 743 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:33:50,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1473 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:33:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2022-07-12 06:33:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 1667. [2022-07-12 06:33:50,762 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) [2022-07-12 06:33:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2540 transitions. [2022-07-12 06:33:50,769 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2540 transitions. Word has length 100 [2022-07-12 06:33:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:50,770 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2540 transitions. [2022-07-12 06:33:50,770 INFO L496 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) [2022-07-12 06:33:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2540 transitions. [2022-07-12 06:33:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:50,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:50,773 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:50,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:33:50,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:50,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:50,774 INFO L85 PathProgramCache]: Analyzing trace with hash 727252796, now seen corresponding path program 1 times [2022-07-12 06:33:50,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:50,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766334950] [2022-07-12 06:33:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:50,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:50,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:50,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:50,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766334950] [2022-07-12 06:33:50,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766334950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:50,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:50,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:33:50,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963554390] [2022-07-12 06:33:50,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:50,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:33:50,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:50,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:33:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:33:50,843 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) [2022-07-12 06:33:51,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:51,947 INFO L93 Difference]: Finished difference Result 5742 states and 8880 transitions. [2022-07-12 06:33:51,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:33:51,948 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 [2022-07-12 06:33:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:51,963 INFO L225 Difference]: With dead ends: 5742 [2022-07-12 06:33:51,964 INFO L226 Difference]: Without dead ends: 4088 [2022-07-12 06:33:51,968 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:51,970 INFO L413 NwaCegarLoop]: 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:33:51,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1467 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:33:51,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2022-07-12 06:33:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 3126. [2022-07-12 06:33:52,102 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) [2022-07-12 06:33:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4780 transitions. [2022-07-12 06:33:52,113 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4780 transitions. Word has length 100 [2022-07-12 06:33:52,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:52,113 INFO L495 AbstractCegarLoop]: Abstraction has 3126 states and 4780 transitions. [2022-07-12 06:33:52,114 INFO L496 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) [2022-07-12 06:33:52,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4780 transitions. [2022-07-12 06:33:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:52,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:52,117 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:33:52,117 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:52,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -330585282, now seen corresponding path program 1 times [2022-07-12 06:33:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:52,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91501392] [2022-07-12 06:33:52,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:52,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:52,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:52,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91501392] [2022-07-12 06:33:52,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91501392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:52,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:52,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:33:52,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955274455] [2022-07-12 06:33:52,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:52,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:33:52,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:52,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:33:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:33:52,196 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) [2022-07-12 06:33:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:53,449 INFO L93 Difference]: Finished difference Result 12184 states and 18828 transitions. [2022-07-12 06:33:53,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:33:53,450 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 [2022-07-12 06:33:53,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:53,481 INFO L225 Difference]: With dead ends: 12184 [2022-07-12 06:33:53,481 INFO L226 Difference]: Without dead ends: 9071 [2022-07-12 06:33:53,489 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:53,490 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 1007 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:33:53,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 1021 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 06:33:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9071 states. [2022-07-12 06:33:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9071 to 6026. [2022-07-12 06:33:53,723 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) [2022-07-12 06:33:53,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 9302 transitions. [2022-07-12 06:33:53,744 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 9302 transitions. Word has length 100 [2022-07-12 06:33:53,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:53,746 INFO L495 AbstractCegarLoop]: Abstraction has 6026 states and 9302 transitions. [2022-07-12 06:33:53,746 INFO L496 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) [2022-07-12 06:33:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 9302 transitions. [2022-07-12 06:33:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:53,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:53,751 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:53,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:33:53,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -90345536, now seen corresponding path program 1 times [2022-07-12 06:33:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:53,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413925146] [2022-07-12 06:33:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:53,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:53,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:53,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:53,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413925146] [2022-07-12 06:33:53,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413925146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:53,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:53,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:33:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667401319] [2022-07-12 06:33:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:53,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:33:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:33:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:33:53,847 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) [2022-07-12 06:33:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:55,605 INFO L93 Difference]: Finished difference Result 23310 states and 36288 transitions. [2022-07-12 06:33:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:33:55,605 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 [2022-07-12 06:33:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:55,661 INFO L225 Difference]: With dead ends: 23310 [2022-07-12 06:33:55,661 INFO L226 Difference]: Without dead ends: 17297 [2022-07-12 06:33:55,680 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:55,681 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 778 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-07-12 06:33:55,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1516 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:33:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17297 states. [2022-07-12 06:33:56,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17297 to 11647. [2022-07-12 06:33:56,282 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) [2022-07-12 06:33:56,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11647 states to 11647 states and 18230 transitions. [2022-07-12 06:33:56,310 INFO L78 Accepts]: Start accepts. Automaton has 11647 states and 18230 transitions. Word has length 100 [2022-07-12 06:33:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:56,312 INFO L495 AbstractCegarLoop]: Abstraction has 11647 states and 18230 transitions. [2022-07-12 06:33:56,312 INFO L496 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) [2022-07-12 06:33:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11647 states and 18230 transitions. [2022-07-12 06:33:56,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:56,321 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:56,321 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:56,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:33:56,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash 748688126, now seen corresponding path program 1 times [2022-07-12 06:33:56,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:56,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694077085] [2022-07-12 06:33:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:56,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:33:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:33:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:33:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:33:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:33:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:33:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:33:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:33:56,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:33:56,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694077085] [2022-07-12 06:33:56,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694077085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:33:56,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:33:56,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:33:56,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534137285] [2022-07-12 06:33:56,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:33:56,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:33:56,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:33:56,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:33:56,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:33:56,413 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) [2022-07-12 06:33:58,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:33:58,741 INFO L93 Difference]: Finished difference Result 44489 states and 70110 transitions. [2022-07-12 06:33:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:33:58,742 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 [2022-07-12 06:33:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:33:58,846 INFO L225 Difference]: With dead ends: 44489 [2022-07-12 06:33:58,846 INFO L226 Difference]: Without dead ends: 32855 [2022-07-12 06:33:58,887 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:33:58,888 INFO L413 NwaCegarLoop]: 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 [2022-07-12 06:33:58,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1439 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:33:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32855 states. [2022-07-12 06:33:59,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32855 to 23016. [2022-07-12 06:33:59,916 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) [2022-07-12 06:33:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23016 states to 23016 states and 36794 transitions. [2022-07-12 06:33:59,980 INFO L78 Accepts]: Start accepts. Automaton has 23016 states and 36794 transitions. Word has length 100 [2022-07-12 06:33:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:33:59,980 INFO L495 AbstractCegarLoop]: Abstraction has 23016 states and 36794 transitions. [2022-07-12 06:33:59,980 INFO L496 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) [2022-07-12 06:33:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 23016 states and 36794 transitions. [2022-07-12 06:33:59,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:33:59,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:33:59,996 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:33:59,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:33:59,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:33:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:33:59,998 INFO L85 PathProgramCache]: Analyzing trace with hash 775753728, now seen corresponding path program 1 times [2022-07-12 06:33:59,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:33:59,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964503862] [2022-07-12 06:33:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:33:59,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:00,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:34:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:34:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:34:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:34:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:00,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:00,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:00,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964503862] [2022-07-12 06:34:00,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964503862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:00,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:00,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:00,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625710341] [2022-07-12 06:34:00,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:00,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:00,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:00,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:00,085 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) [2022-07-12 06:34:03,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:03,843 INFO L93 Difference]: Finished difference Result 86080 states and 138516 transitions. [2022-07-12 06:34:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:34:03,843 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 [2022-07-12 06:34:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:04,077 INFO L225 Difference]: With dead ends: 86080 [2022-07-12 06:34:04,077 INFO L226 Difference]: Without dead ends: 63077 [2022-07-12 06:34:04,153 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:34:04,153 INFO L413 NwaCegarLoop]: 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 [2022-07-12 06:34:04,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1434 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:34:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63077 states. [2022-07-12 06:34:06,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63077 to 45689. [2022-07-12 06:34:06,444 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) [2022-07-12 06:34:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45689 states to 45689 states and 75314 transitions. [2022-07-12 06:34:06,613 INFO L78 Accepts]: Start accepts. Automaton has 45689 states and 75314 transitions. Word has length 100 [2022-07-12 06:34:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:06,613 INFO L495 AbstractCegarLoop]: Abstraction has 45689 states and 75314 transitions. [2022-07-12 06:34:06,613 INFO L496 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) [2022-07-12 06:34:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 45689 states and 75314 transitions. [2022-07-12 06:34:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:34:06,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:06,643 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:34:06,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:34:06,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1301583170, now seen corresponding path program 1 times [2022-07-12 06:34:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52456145] [2022-07-12 06:34:06,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:06,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:06,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:06,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:34:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:34:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:34:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:34:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:06,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:06,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52456145] [2022-07-12 06:34:06,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52456145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:06,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:06,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:06,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105531064] [2022-07-12 06:34:06,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:06,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:06,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:06,727 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) [2022-07-12 06:34:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:13,771 INFO L93 Difference]: Finished difference Result 166895 states and 277386 transitions. [2022-07-12 06:34:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:34:13,771 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 [2022-07-12 06:34:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:14,188 INFO L225 Difference]: With dead ends: 166895 [2022-07-12 06:34:14,189 INFO L226 Difference]: Without dead ends: 121219 [2022-07-12 06:34:14,301 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:34:14,301 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 746 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2022-07-12 06:34:14,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1457 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:34:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121219 states. [2022-07-12 06:34:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121219 to 90906. [2022-07-12 06:34:18,770 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) [2022-07-12 06:34:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90906 states to 90906 states and 156598 transitions. [2022-07-12 06:34:19,370 INFO L78 Accepts]: Start accepts. Automaton has 90906 states and 156598 transitions. Word has length 100 [2022-07-12 06:34:19,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:34:19,370 INFO L495 AbstractCegarLoop]: Abstraction has 90906 states and 156598 transitions. [2022-07-12 06:34:19,370 INFO L496 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) [2022-07-12 06:34:19,371 INFO L276 IsEmpty]: Start isEmpty. Operand 90906 states and 156598 transitions. [2022-07-12 06:34:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:34:19,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:34:19,463 INFO L195 NwaCegarLoop]: 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] [2022-07-12 06:34:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:34:19,464 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:34:19,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:34:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash 432521280, now seen corresponding path program 1 times [2022-07-12 06:34:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:34:19,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194750181] [2022-07-12 06:34:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:34:19,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:34:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:34:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:19,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:34:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 06:34:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:34:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:34:19,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:34:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:34:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:34:19,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194750181] [2022-07-12 06:34:19,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194750181] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:34:19,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:34:19,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:34:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640140765] [2022-07-12 06:34:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:34:19,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:34:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:34:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:34:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:34:19,535 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) [2022-07-12 06:34:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:34:31,644 INFO L93 Difference]: Finished difference Result 323646 states and 564928 transitions. [2022-07-12 06:34:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:34:31,645 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 [2022-07-12 06:34:31,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:34:33,062 INFO L225 Difference]: With dead ends: 323646 [2022-07-12 06:34:33,062 INFO L226 Difference]: Without dead ends: 232753 [2022-07-12 06:34:33,368 INFO L412 NwaCegarLoop]: 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 [2022-07-12 06:34:33,369 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 750 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:34:33,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1403 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:34:33,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232753 states.