./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/product-lines/minepump_spec1_product56.cil.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 8d89cb30057b8721685c80693144eb2455c18c87 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 16:14:18,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 16:14:18,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 16:14:18,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 16:14:18,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 16:14:18,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 16:14:18,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 16:14:18,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 16:14:18,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 16:14:18,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 16:14:18,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 16:14:18,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 16:14:18,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 16:14:18,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 16:14:18,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 16:14:18,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 16:14:18,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 16:14:18,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 16:14:18,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 16:14:18,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 16:14:18,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 16:14:18,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 16:14:18,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 16:14:18,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 16:14:18,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 16:14:18,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 16:14:18,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 16:14:18,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 16:14:18,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 16:14:18,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 16:14:18,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 16:14:18,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 16:14:18,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 16:14:18,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 16:14:18,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 16:14:18,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 16:14:18,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 16:14:18,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 16:14:18,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 16:14:18,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 16:14:18,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 16:14:18,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 16:14:18,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 16:14:18,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 16:14:18,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 16:14:18,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 16:14:18,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 16:14:18,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 16:14:18,824 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 16:14:18,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 16:14:18,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 16:14:18,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 16:14:18,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 16:14:18,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 16:14:18,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 16:14:18,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 16:14:18,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 16:14:18,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 16:14:18,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 16:14:18,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 16:14:18,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 16:14:18,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 16:14:18,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 16:14:18,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 16:14:18,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:14:18,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 16:14:18,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 16:14:18,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 16:14:18,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 16:14:18,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 16:14:18,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 16:14:18,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 16:14:18,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d89cb30057b8721685c80693144eb2455c18c87 [2021-08-29 16:14:19,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 16:14:19,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 16:14:19,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 16:14:19,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 16:14:19,109 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 16:14:19,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2021-08-29 16:14:19,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76380eeed/f5e72b4727264377b3d2c2da27f5951f/FLAGd7b16a56f [2021-08-29 16:14:19,547 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 16:14:19,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c [2021-08-29 16:14:19,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76380eeed/f5e72b4727264377b3d2c2da27f5951f/FLAGd7b16a56f [2021-08-29 16:14:19,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76380eeed/f5e72b4727264377b3d2c2da27f5951f [2021-08-29 16:14:19,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 16:14:19,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 16:14:19,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 16:14:19,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 16:14:19,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 16:14:19,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:19,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffab04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19, skipping insertion in model container [2021-08-29 16:14:19,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:19,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 16:14:19,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 16:14:19,824 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c[16355,16368] [2021-08-29 16:14:19,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:14:19,844 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 16:14:19,902 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product56.cil.c[16355,16368] [2021-08-29 16:14:19,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 16:14:19,919 INFO L208 MainTranslator]: Completed translation [2021-08-29 16:14:19,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19 WrapperNode [2021-08-29 16:14:19,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 16:14:19,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 16:14:19,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 16:14:19,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 16:14:19,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:19,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:19,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 16:14:19,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 16:14:19,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 16:14:19,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 16:14:19,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:19,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:19,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:19,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:20,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:20,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:20,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:20,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 16:14:20,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 16:14:20,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 16:14:20,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 16:14:20,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (1/1) ... [2021-08-29 16:14:20,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 16:14:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 16:14:20,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 16:14:20,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 16:14:20,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 16:14:20,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 16:14:20,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 16:14:20,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 16:14:20,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 16:14:20,554 INFO L299 CfgBuilder]: Removed 282 assume(true) statements. [2021-08-29 16:14:20,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:14:20 BoogieIcfgContainer [2021-08-29 16:14:20,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 16:14:20,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 16:14:20,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 16:14:20,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 16:14:20,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 04:14:19" (1/3) ... [2021-08-29 16:14:20,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59553ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:14:20, skipping insertion in model container [2021-08-29 16:14:20,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 04:14:19" (2/3) ... [2021-08-29 16:14:20,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59553ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 04:14:20, skipping insertion in model container [2021-08-29 16:14:20,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:14:20" (3/3) ... [2021-08-29 16:14:20,566 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product56.cil.c [2021-08-29 16:14:20,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 16:14:20,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-29 16:14:20,600 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 16:14:20,604 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 16:14:20,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-29 16:14:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 187 states have (on average 1.5561497326203209) internal successors, (291), 190 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:20,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 16:14:20,629 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:20,629 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:20,630 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:20,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1937289636, now seen corresponding path program 1 times [2021-08-29 16:14:20,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:20,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624256374] [2021-08-29 16:14:20,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:20,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:20,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:20,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624256374] [2021-08-29 16:14:20,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624256374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:20,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:20,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 16:14:20,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685597849] [2021-08-29 16:14:20,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 16:14:20,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 16:14:20,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 16:14:20,936 INFO L87 Difference]: Start difference. First operand has 191 states, 187 states have (on average 1.5561497326203209) internal successors, (291), 190 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:21,322 INFO L93 Difference]: Finished difference Result 376 states and 575 transitions. [2021-08-29 16:14:21,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 16:14:21,326 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 16:14:21,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:21,332 INFO L225 Difference]: With dead ends: 376 [2021-08-29 16:14:21,332 INFO L226 Difference]: Without dead ends: 187 [2021-08-29 16:14:21,335 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 16:14:21,337 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 249.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 320.26ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:21,337 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 284 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [0 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 320.26ms Time] [2021-08-29 16:14:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-08-29 16:14:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-08-29 16:14:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 184 states have (on average 1.516304347826087) internal successors, (279), 186 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 279 transitions. [2021-08-29 16:14:21,385 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 279 transitions. Word has length 16 [2021-08-29 16:14:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:21,386 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 279 transitions. [2021-08-29 16:14:21,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 279 transitions. [2021-08-29 16:14:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 16:14:21,387 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:21,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:21,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 16:14:21,388 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:21,388 INFO L82 PathProgramCache]: Analyzing trace with hash 890532739, now seen corresponding path program 1 times [2021-08-29 16:14:21,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:21,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142809885] [2021-08-29 16:14:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:21,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:21,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:21,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142809885] [2021-08-29 16:14:21,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142809885] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:21,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:21,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 16:14:21,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118001194] [2021-08-29 16:14:21,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 16:14:21,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 16:14:21,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:21,448 INFO L87 Difference]: Start difference. First operand 187 states and 279 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:21,609 INFO L93 Difference]: Finished difference Result 187 states and 279 transitions. [2021-08-29 16:14:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 16:14:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-29 16:14:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:21,611 INFO L225 Difference]: With dead ends: 187 [2021-08-29 16:14:21,611 INFO L226 Difference]: Without dead ends: 73 [2021-08-29 16:14:21,611 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:21,612 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.88ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:21,612 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 113 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 144.88ms Time] [2021-08-29 16:14:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-29 16:14:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-29 16:14:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5) internal successors, (108), 72 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2021-08-29 16:14:21,618 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 17 [2021-08-29 16:14:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:21,618 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2021-08-29 16:14:21,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,619 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2021-08-29 16:14:21,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 16:14:21,619 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:21,619 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:21,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 16:14:21,620 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:21,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:21,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1577730230, now seen corresponding path program 1 times [2021-08-29 16:14:21,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:21,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121488544] [2021-08-29 16:14:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:21,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:21,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:21,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121488544] [2021-08-29 16:14:21,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121488544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:21,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:21,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 16:14:21,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490198614] [2021-08-29 16:14:21,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:14:21,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:14:21,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:14:21,747 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:21,940 INFO L93 Difference]: Finished difference Result 163 states and 244 transitions. [2021-08-29 16:14:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 16:14:21,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-29 16:14:21,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:21,943 INFO L225 Difference]: With dead ends: 163 [2021-08-29 16:14:21,943 INFO L226 Difference]: Without dead ends: 96 [2021-08-29 16:14:21,944 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.78ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-29 16:14:21,946 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 378 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.81ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:21,948 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 0 Invalid, 147 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 153.81ms Time] [2021-08-29 16:14:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-08-29 16:14:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-08-29 16:14:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.5054945054945055) internal successors, (137), 91 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2021-08-29 16:14:21,960 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 22 [2021-08-29 16:14:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:21,961 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2021-08-29 16:14:21,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2021-08-29 16:14:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-29 16:14:21,963 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:21,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:21,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 16:14:21,963 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:21,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:21,965 INFO L82 PathProgramCache]: Analyzing trace with hash 792163456, now seen corresponding path program 1 times [2021-08-29 16:14:21,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:21,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335528466] [2021-08-29 16:14:21,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:21,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:22,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:22,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335528466] [2021-08-29 16:14:22,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335528466] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:22,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:22,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 16:14:22,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108084408] [2021-08-29 16:14:22,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 16:14:22,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 16:14:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:22,017 INFO L87 Difference]: Start difference. First operand 92 states and 137 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:22,141 INFO L93 Difference]: Finished difference Result 187 states and 280 transitions. [2021-08-29 16:14:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 16:14:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-29 16:14:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:22,143 INFO L225 Difference]: With dead ends: 187 [2021-08-29 16:14:22,143 INFO L226 Difference]: Without dead ends: 101 [2021-08-29 16:14:22,145 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:22,152 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.42ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:22,153 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 144 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 115.42ms Time] [2021-08-29 16:14:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-08-29 16:14:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-08-29 16:14:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 98 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 141 transitions. [2021-08-29 16:14:22,169 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 141 transitions. Word has length 25 [2021-08-29 16:14:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:22,169 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 141 transitions. [2021-08-29 16:14:22,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 141 transitions. [2021-08-29 16:14:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-29 16:14:22,178 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:22,178 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:22,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 16:14:22,178 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:22,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1022954699, now seen corresponding path program 1 times [2021-08-29 16:14:22,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:22,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094930094] [2021-08-29 16:14:22,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:22,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:22,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:22,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094930094] [2021-08-29 16:14:22,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094930094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:22,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:22,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 16:14:22,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358939149] [2021-08-29 16:14:22,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:14:22,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:14:22,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:14:22,249 INFO L87 Difference]: Start difference. First operand 99 states and 141 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:22,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:22,674 INFO L93 Difference]: Finished difference Result 485 states and 703 transitions. [2021-08-29 16:14:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 16:14:22,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-29 16:14:22,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:22,677 INFO L225 Difference]: With dead ends: 485 [2021-08-29 16:14:22,677 INFO L226 Difference]: Without dead ends: 392 [2021-08-29 16:14:22,677 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.76ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 16:14:22,678 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 407 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 285.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 370.76ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:22,678 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 0 Invalid, 509 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [11 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 370.76ms Time] [2021-08-29 16:14:22,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-08-29 16:14:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 184. [2021-08-29 16:14:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4207650273224044) internal successors, (260), 183 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 260 transitions. [2021-08-29 16:14:22,690 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 260 transitions. Word has length 25 [2021-08-29 16:14:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:22,690 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 260 transitions. [2021-08-29 16:14:22,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 260 transitions. [2021-08-29 16:14:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-29 16:14:22,691 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:22,691 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:22,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 16:14:22,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:22,692 INFO L82 PathProgramCache]: Analyzing trace with hash 819147605, now seen corresponding path program 1 times [2021-08-29 16:14:22,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:22,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706825385] [2021-08-29 16:14:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:22,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:22,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:22,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706825385] [2021-08-29 16:14:22,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706825385] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:22,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:22,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 16:14:22,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71822735] [2021-08-29 16:14:22,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:14:22,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:14:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:14:22,756 INFO L87 Difference]: Start difference. First operand 184 states and 260 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:23,136 INFO L93 Difference]: Finished difference Result 522 states and 741 transitions. [2021-08-29 16:14:23,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 16:14:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-08-29 16:14:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:23,138 INFO L225 Difference]: With dead ends: 522 [2021-08-29 16:14:23,138 INFO L226 Difference]: Without dead ends: 520 [2021-08-29 16:14:23,139 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 20.39ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 16:14:23,139 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 256.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.96ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:23,139 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 657 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [9 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 331.96ms Time] [2021-08-29 16:14:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-08-29 16:14:23,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 184. [2021-08-29 16:14:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.4098360655737705) internal successors, (258), 183 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 258 transitions. [2021-08-29 16:14:23,149 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 258 transitions. Word has length 26 [2021-08-29 16:14:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:23,149 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 258 transitions. [2021-08-29 16:14:23,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 258 transitions. [2021-08-29 16:14:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 16:14:23,150 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:23,150 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:23,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 16:14:23,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1010263109, now seen corresponding path program 1 times [2021-08-29 16:14:23,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:23,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743798577] [2021-08-29 16:14:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:23,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:23,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:23,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:23,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743798577] [2021-08-29 16:14:23,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743798577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:23,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:23,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 16:14:23,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051950078] [2021-08-29 16:14:23,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 16:14:23,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:23,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 16:14:23,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 16:14:23,186 INFO L87 Difference]: Start difference. First operand 184 states and 258 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:23,481 INFO L93 Difference]: Finished difference Result 534 states and 740 transitions. [2021-08-29 16:14:23,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 16:14:23,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-29 16:14:23,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:23,483 INFO L225 Difference]: With dead ends: 534 [2021-08-29 16:14:23,483 INFO L226 Difference]: Without dead ends: 356 [2021-08-29 16:14:23,484 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.67ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 16:14:23,484 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.40ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 261.61ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:23,484 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 452 Unknown, 0 Unchecked, 1.40ms Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 261.61ms Time] [2021-08-29 16:14:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-08-29 16:14:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 202. [2021-08-29 16:14:23,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.373134328358209) internal successors, (276), 201 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 276 transitions. [2021-08-29 16:14:23,495 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 276 transitions. Word has length 32 [2021-08-29 16:14:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:23,495 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 276 transitions. [2021-08-29 16:14:23,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,495 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 276 transitions. [2021-08-29 16:14:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 16:14:23,496 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:23,496 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:23,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 16:14:23,496 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:23,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1403290119, now seen corresponding path program 1 times [2021-08-29 16:14:23,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:23,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102037879] [2021-08-29 16:14:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:23,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:23,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:23,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102037879] [2021-08-29 16:14:23,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102037879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:23,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:23,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-29 16:14:23,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325871107] [2021-08-29 16:14:23,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 16:14:23,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 16:14:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 16:14:23,533 INFO L87 Difference]: Start difference. First operand 202 states and 276 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:23,797 INFO L93 Difference]: Finished difference Result 584 states and 790 transitions. [2021-08-29 16:14:23,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 16:14:23,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-29 16:14:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:23,799 INFO L225 Difference]: With dead ends: 584 [2021-08-29 16:14:23,799 INFO L226 Difference]: Without dead ends: 388 [2021-08-29 16:14:23,800 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.90ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-08-29 16:14:23,800 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 335 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 159.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.59ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.70ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:23,800 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 0 Invalid, 335 Unknown, 0 Unchecked, 1.59ms Time], IncrementalHoareTripleChecker [9 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 207.70ms Time] [2021-08-29 16:14:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-08-29 16:14:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 214. [2021-08-29 16:14:23,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.352112676056338) internal successors, (288), 213 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 288 transitions. [2021-08-29 16:14:23,814 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 288 transitions. Word has length 32 [2021-08-29 16:14:23,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:23,814 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 288 transitions. [2021-08-29 16:14:23,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,814 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 288 transitions. [2021-08-29 16:14:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-29 16:14:23,815 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:23,815 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:23,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 16:14:23,815 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1145124681, now seen corresponding path program 1 times [2021-08-29 16:14:23,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:23,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437735653] [2021-08-29 16:14:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:23,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 16:14:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 16:14:23,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 16:14:23,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437735653] [2021-08-29 16:14:23,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437735653] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 16:14:23,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 16:14:23,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 16:14:23,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577406041] [2021-08-29 16:14:23,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 16:14:23,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 16:14:23,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 16:14:23,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:23,841 INFO L87 Difference]: Start difference. First operand 214 states and 288 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:23,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 16:14:23,970 INFO L93 Difference]: Finished difference Result 512 states and 688 transitions. [2021-08-29 16:14:23,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 16:14:23,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-29 16:14:23,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 16:14:23,972 INFO L225 Difference]: With dead ends: 512 [2021-08-29 16:14:23,972 INFO L226 Difference]: Without dead ends: 304 [2021-08-29 16:14:23,973 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 16:14:23,974 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.36ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.06ms IncrementalHoareTripleChecker+Time [2021-08-29 16:14:23,974 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 169 Unknown, 0 Unchecked, 0.36ms Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 108.06ms Time] [2021-08-29 16:14:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-08-29 16:14:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-08-29 16:14:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.3201320132013201) internal successors, (400), 303 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 400 transitions. [2021-08-29 16:14:24,005 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 400 transitions. Word has length 32 [2021-08-29 16:14:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 16:14:24,005 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 400 transitions. [2021-08-29 16:14:24,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 16:14:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 400 transitions. [2021-08-29 16:14:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 16:14:24,007 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 16:14:24,007 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 16:14:24,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 16:14:24,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 16:14:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 16:14:24,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2078796085, now seen corresponding path program 1 times [2021-08-29 16:14:24,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 16:14:24,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193554126] [2021-08-29 16:14:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 16:14:24,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 16:14:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 16:14:24,055 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 16:14:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 16:14:24,126 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 16:14:24,126 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 16:14:24,127 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-08-29 16:14:24,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-08-29 16:14:24,128 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-08-29 16:14:24,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 16:14:24,137 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 16:14:24,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 04:14:24 BoogieIcfgContainer [2021-08-29 16:14:24,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 16:14:24,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 16:14:24,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 16:14:24,215 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 16:14:24,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 04:14:20" (3/4) ... [2021-08-29 16:14:24,217 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 16:14:24,263 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 16:14:24,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 16:14:24,264 INFO L158 Benchmark]: Toolchain (without parser) took 4692.11ms. Allocated memory was 65.0MB in the beginning and 125.8MB in the end (delta: 60.8MB). Free memory was 41.9MB in the beginning and 52.8MB in the end (delta: -10.9MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-08-29 16:14:24,264 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 16:14:24,264 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.03ms. Allocated memory is still 65.0MB. Free memory was 41.6MB in the beginning and 40.2MB in the end (delta: 1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 16:14:24,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.16ms. Allocated memory is still 65.0MB. Free memory was 40.2MB in the beginning and 35.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 16:14:24,265 INFO L158 Benchmark]: Boogie Preprocessor took 68.19ms. Allocated memory is still 65.0MB. Free memory was 35.1MB in the beginning and 31.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 16:14:24,265 INFO L158 Benchmark]: RCFGBuilder took 528.42ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 31.7MB in the beginning and 63.9MB in the end (delta: -32.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-08-29 16:14:24,265 INFO L158 Benchmark]: TraceAbstraction took 3651.83ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 63.5MB in the beginning and 66.5MB in the end (delta: -3.0MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2021-08-29 16:14:24,265 INFO L158 Benchmark]: Witness Printer took 49.06ms. Allocated memory is still 125.8MB. Free memory was 66.5MB in the beginning and 52.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 16:14:24,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 65.0MB. Free memory was 45.6MB in the beginning and 45.5MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.03ms. Allocated memory is still 65.0MB. Free memory was 41.6MB in the beginning and 40.2MB in the end (delta: 1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.16ms. Allocated memory is still 65.0MB. Free memory was 40.2MB in the beginning and 35.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.19ms. Allocated memory is still 65.0MB. Free memory was 35.1MB in the beginning and 31.7MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 528.42ms. Allocated memory was 65.0MB in the beginning and 86.0MB in the end (delta: 21.0MB). Free memory was 31.7MB in the beginning and 63.9MB in the end (delta: -32.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3651.83ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 63.5MB in the beginning and 66.5MB in the end (delta: -3.0MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * Witness Printer took 49.06ms. Allocated memory is still 125.8MB. Free memory was 66.5MB in the beginning and 52.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 808]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L211] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L492] int pumpRunning = 0; [L493] int systemActive = 1; [L813] int cleanupTimeShifts = 4; [L910] int waterLevel = 1; [L911] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] int retValue_acc ; [L887] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L768] int retValue_acc ; [L771] retValue_acc = 1 [L772] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L893] tmp = valid_product() [L895] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L415] int splverifierCounter ; [L416] int tmp ; [L417] int tmp___0 ; [L418] int tmp___1 ; [L419] int tmp___2 ; [L422] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L424] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L426] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L432] tmp = __VERIFIER_nondet_int() [L434] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L928] COND TRUE waterLevel < 2 [L929] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L442] tmp___0 = __VERIFIER_nondet_int() [L444] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L940] COND FALSE !(\read(methaneLevelCritical)) [L943] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L452] tmp___2 = __VERIFIER_nondet_int() [L454] COND TRUE \read(tmp___2) [L734] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L500] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L507] COND TRUE \read(systemActive) [L581] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L584] COND FALSE !(\read(pumpRunning)) [L555] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L558] COND FALSE !(\read(pumpRunning)) [L529] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L532] COND TRUE ! pumpRunning [L678] int retValue_acc ; [L679] int tmp ; [L680] int tmp___0 ; [L990] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L993] COND FALSE !(waterLevel < 2) [L997] retValue_acc = 0 [L998] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L684] tmp = isHighWaterSensorDry() [L686] COND FALSE !(\read(tmp)) [L689] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L691] retValue_acc = tmp___0 [L692] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L534] tmp = isHighWaterLevel() [L536] COND TRUE \read(tmp) [L609] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L779] int tmp ; [L780] int tmp___0 ; [L949] int retValue_acc ; [L952] retValue_acc = methaneLevelCritical [L953] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L784] tmp = isMethaneLevelCritical() [L786] COND TRUE \read(tmp) [L633] int retValue_acc ; [L636] retValue_acc = pumpRunning [L637] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L788] tmp___0 = isPumpRunning() [L790] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L808] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - UnprovableResult [Line: 808]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 191 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3536.92ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 23.47ms, AutomataDifference: 2451.36ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.54ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1711 SdHoareTripleChecker+Valid, 2014.45ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1711 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1514.59ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1365 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2754 IncrementalHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 0 mSDtfsCounter, 2754 mSolverCounterSat, 18.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 125.02ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=304occurred in iteration=9, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 143.79ms AutomataMinimizationTime, 9 MinimizatonAttempts, 878 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 45.12ms SsaConstructionTime, 249.88ms SatisfiabilityAnalysisTime, 375.40ms InterpolantComputationTime, 260 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 16:14:24,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...