./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_spec4_product47.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 58d8e3bdac126218d105f0be97d14e97f305aadd ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-dev-20ed64e [2021-08-26 08:44:51,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 08:44:51,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 08:44:51,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 08:44:51,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 08:44:51,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 08:44:51,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 08:44:51,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 08:44:51,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 08:44:51,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 08:44:51,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 08:44:51,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 08:44:51,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 08:44:51,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 08:44:51,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 08:44:51,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 08:44:51,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 08:44:51,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 08:44:51,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 08:44:51,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 08:44:51,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 08:44:51,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 08:44:51,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 08:44:51,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 08:44:51,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 08:44:51,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 08:44:51,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 08:44:51,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 08:44:51,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 08:44:51,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 08:44:51,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 08:44:51,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 08:44:51,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 08:44:51,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 08:44:51,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 08:44:51,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 08:44:51,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 08:44:51,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 08:44:51,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 08:44:51,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 08:44:51,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 08:44:51,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 08:44:51,916 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 08:44:51,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 08:44:51,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 08:44:51,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 08:44:51,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 08:44:51,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 08:44:51,919 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 08:44:51,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 08:44:51,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 08:44:51,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 08:44:51,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 08:44:51,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 08:44:51,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 08:44:51,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 08:44:51,922 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 08:44:51,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:44:51,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 08:44:51,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 08:44:51,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 08:44:51,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 08:44:51,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 08:44:51,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 08:44:51,930 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 08:44:51,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58d8e3bdac126218d105f0be97d14e97f305aadd [2021-08-26 08:44:52,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 08:44:52,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 08:44:52,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 08:44:52,303 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 08:44:52,303 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 08:44:52,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-08-26 08:44:52,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43e595b1b/0ae99c64801c46939b7e60007f6c27ca/FLAGb4bb802b1 [2021-08-26 08:44:52,858 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 08:44:52,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product47.cil.c [2021-08-26 08:44:52,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43e595b1b/0ae99c64801c46939b7e60007f6c27ca/FLAGb4bb802b1 [2021-08-26 08:44:53,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43e595b1b/0ae99c64801c46939b7e60007f6c27ca [2021-08-26 08:44:53,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 08:44:53,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 08:44:53,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 08:44:53,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 08:44:53,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 08:44:53,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fa419b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53, skipping insertion in model container [2021-08-26 08:44:53,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 08:44:53,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 08:44:53,682 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_spec4_product47.cil.c[16386,16399] [2021-08-26 08:44:53,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:44:53,721 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 08:44:53,796 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_spec4_product47.cil.c[16386,16399] [2021-08-26 08:44:53,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:44:53,817 INFO L208 MainTranslator]: Completed translation [2021-08-26 08:44:53,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53 WrapperNode [2021-08-26 08:44:53,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 08:44:53,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 08:44:53,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 08:44:53,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 08:44:53,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 08:44:53,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 08:44:53,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 08:44:53,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 08:44:53,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 08:44:53,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 08:44:53,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 08:44:53,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 08:44:53,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (1/1) ... [2021-08-26 08:44:53,922 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:44:53,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:44:53,938 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) [2021-08-26 08:44:53,945 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 [2021-08-26 08:44:53,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 08:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 08:44:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 08:44:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 08:44:54,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 08:44:54,757 INFO L299 CfgBuilder]: Removed 196 assume(true) statements. [2021-08-26 08:44:54,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:44:54 BoogieIcfgContainer [2021-08-26 08:44:54,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 08:44:54,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 08:44:54,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 08:44:54,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 08:44:54,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:44:53" (1/3) ... [2021-08-26 08:44:54,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a16d841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:44:54, skipping insertion in model container [2021-08-26 08:44:54,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:53" (2/3) ... [2021-08-26 08:44:54,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a16d841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:44:54, skipping insertion in model container [2021-08-26 08:44:54,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:44:54" (3/3) ... [2021-08-26 08:44:54,766 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2021-08-26 08:44:54,771 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 08:44:54,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-26 08:44:54,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 08:44:54,827 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 [2021-08-26 08:44:54,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 08:44:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 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) [2021-08-26 08:44:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 08:44:54,861 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:54,862 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:54,863 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:54,868 INFO L82 PathProgramCache]: Analyzing trace with hash -330245923, now seen corresponding path program 1 times [2021-08-26 08:44:54,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:54,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2487886] [2021-08-26 08:44:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:54,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:55,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:55,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2487886] [2021-08-26 08:44:55,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2487886] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:55,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:55,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:44:55,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776986358] [2021-08-26 08:44:55,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 08:44:55,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:55,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 08:44:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:44:55,115 INFO L87 Difference]: Start difference. First operand has 131 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 130 states have internal predecessors, (195), 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) [2021-08-26 08:44:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:55,148 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2021-08-26 08:44:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 08:44:55,149 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 [2021-08-26 08:44:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:55,157 INFO L225 Difference]: With dead ends: 256 [2021-08-26 08:44:55,157 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 08:44:55,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:44:55,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 08:44:55,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-08-26 08:44:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.4758064516129032) internal successors, (183), 126 states have internal predecessors, (183), 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) [2021-08-26 08:44:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2021-08-26 08:44:55,195 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2021-08-26 08:44:55,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:55,196 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2021-08-26 08:44:55,196 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) [2021-08-26 08:44:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2021-08-26 08:44:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 08:44:55,197 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:55,197 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:55,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 08:44:55,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash 450073546, now seen corresponding path program 1 times [2021-08-26 08:44:55,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:55,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74380447] [2021-08-26 08:44:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:55,199 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:55,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:55,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74380447] [2021-08-26 08:44:55,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74380447] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:55,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:55,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 08:44:55,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400366279] [2021-08-26 08:44:55,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:44:55,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:44:55,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:55,281 INFO L87 Difference]: Start difference. First operand 127 states and 183 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) [2021-08-26 08:44:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:55,291 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2021-08-26 08:44:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:44:55,291 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 [2021-08-26 08:44:55,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:55,292 INFO L225 Difference]: With dead ends: 127 [2021-08-26 08:44:55,292 INFO L226 Difference]: Without dead ends: 53 [2021-08-26 08:44:55,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-26 08:44:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-08-26 08:44:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 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) [2021-08-26 08:44:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2021-08-26 08:44:55,298 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2021-08-26 08:44:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:55,299 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2021-08-26 08:44:55,299 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) [2021-08-26 08:44:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2021-08-26 08:44:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 08:44:55,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:55,300 INFO L512 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] [2021-08-26 08:44:55,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 08:44:55,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:55,301 INFO L82 PathProgramCache]: Analyzing trace with hash 445162074, now seen corresponding path program 1 times [2021-08-26 08:44:55,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:55,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809511582] [2021-08-26 08:44:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:55,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:55,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:55,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:55,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809511582] [2021-08-26 08:44:55,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809511582] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:55,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:55,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:44:55,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673454608] [2021-08-26 08:44:55,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 08:44:55,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 08:44:55,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:44:55,405 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) 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) [2021-08-26 08:44:55,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:55,572 INFO L93 Difference]: Finished difference Result 170 states and 250 transitions. [2021-08-26 08:44:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:44:55,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) 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 [2021-08-26 08:44:55,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:55,574 INFO L225 Difference]: With dead ends: 170 [2021-08-26 08:44:55,574 INFO L226 Difference]: Without dead ends: 123 [2021-08-26 08:44:55,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 08:44:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-26 08:44:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 72. [2021-08-26 08:44:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 71 states have internal predecessors, (105), 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) [2021-08-26 08:44:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2021-08-26 08:44:55,584 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2021-08-26 08:44:55,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:55,585 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2021-08-26 08:44:55,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) 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) [2021-08-26 08:44:55,585 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2021-08-26 08:44:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 08:44:55,586 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:55,586 INFO L512 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] [2021-08-26 08:44:55,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 08:44:55,587 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:55,587 INFO L82 PathProgramCache]: Analyzing trace with hash 96758808, now seen corresponding path program 1 times [2021-08-26 08:44:55,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:55,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491688572] [2021-08-26 08:44:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:55,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:55,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:55,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491688572] [2021-08-26 08:44:55,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491688572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:55,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:55,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:44:55,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448677077] [2021-08-26 08:44:55,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:44:55,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:44:55,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:55,663 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2021-08-26 08:44:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:55,701 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2021-08-26 08:44:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:44:55,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2021-08-26 08:44:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:55,704 INFO L225 Difference]: With dead ends: 159 [2021-08-26 08:44:55,705 INFO L226 Difference]: Without dead ends: 93 [2021-08-26 08:44:55,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-26 08:44:55,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2021-08-26 08:44:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 90 states have internal predecessors, (129), 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) [2021-08-26 08:44:55,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2021-08-26 08:44:55,728 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2021-08-26 08:44:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:55,728 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2021-08-26 08:44:55,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2021-08-26 08:44:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2021-08-26 08:44:55,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 08:44:55,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:55,731 INFO L512 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] [2021-08-26 08:44:55,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 08:44:55,731 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:55,732 INFO L82 PathProgramCache]: Analyzing trace with hash -732744145, now seen corresponding path program 1 times [2021-08-26 08:44:55,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:55,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518846616] [2021-08-26 08:44:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:55,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:55,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:55,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518846616] [2021-08-26 08:44:55,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518846616] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:55,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:55,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 08:44:55,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293748550] [2021-08-26 08:44:55,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 08:44:55,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 08:44:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-26 08:44:55,863 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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) [2021-08-26 08:44:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:56,247 INFO L93 Difference]: Finished difference Result 585 states and 851 transitions. [2021-08-26 08:44:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 08:44:56,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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 [2021-08-26 08:44:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:56,250 INFO L225 Difference]: With dead ends: 585 [2021-08-26 08:44:56,250 INFO L226 Difference]: Without dead ends: 500 [2021-08-26 08:44:56,251 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-08-26 08:44:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-08-26 08:44:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 227. [2021-08-26 08:44:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 226 states have internal predecessors, (316), 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) [2021-08-26 08:44:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2021-08-26 08:44:56,308 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2021-08-26 08:44:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:56,309 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2021-08-26 08:44:56,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 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) [2021-08-26 08:44:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2021-08-26 08:44:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 08:44:56,310 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:56,311 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:56,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 08:44:56,311 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:56,312 INFO L82 PathProgramCache]: Analyzing trace with hash 32404688, now seen corresponding path program 1 times [2021-08-26 08:44:56,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:56,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235388113] [2021-08-26 08:44:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:56,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:56,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:56,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235388113] [2021-08-26 08:44:56,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235388113] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:44:56,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709000485] [2021-08-26 08:44:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:56,385 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:44:56,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:44:56,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:44:56,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 08:44:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:56,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 08:44:56,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:44:56,764 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:56,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709000485] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:56,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-26 08:44:56,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-08-26 08:44:56,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426654015] [2021-08-26 08:44:56,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 08:44:56,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:56,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 08:44:56,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:56,778 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-08-26 08:44:56,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:56,883 INFO L93 Difference]: Finished difference Result 508 states and 721 transitions. [2021-08-26 08:44:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 08:44:56,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-08-26 08:44:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:56,886 INFO L225 Difference]: With dead ends: 508 [2021-08-26 08:44:56,886 INFO L226 Difference]: Without dead ends: 349 [2021-08-26 08:44:56,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:56,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-08-26 08:44:56,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 337. [2021-08-26 08:44:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.4136904761904763) internal successors, (475), 336 states have internal predecessors, (475), 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) [2021-08-26 08:44:56,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 475 transitions. [2021-08-26 08:44:56,934 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 475 transitions. Word has length 40 [2021-08-26 08:44:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:56,934 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 475 transitions. [2021-08-26 08:44:56,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-08-26 08:44:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 475 transitions. [2021-08-26 08:44:56,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 08:44:56,941 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:56,942 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:56,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 08:44:57,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-26 08:44:57,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:57,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:57,158 INFO L82 PathProgramCache]: Analyzing trace with hash 2114560073, now seen corresponding path program 1 times [2021-08-26 08:44:57,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:57,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918196131] [2021-08-26 08:44:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:57,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 08:44:57,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:57,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918196131] [2021-08-26 08:44:57,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918196131] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:57,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:57,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:44:57,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009833697] [2021-08-26 08:44:57,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:44:57,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:57,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:44:57,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:57,236 INFO L87 Difference]: Start difference. First operand 337 states and 475 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-08-26 08:44:57,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:57,334 INFO L93 Difference]: Finished difference Result 1043 states and 1460 transitions. [2021-08-26 08:44:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:44:57,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 51 [2021-08-26 08:44:57,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:57,338 INFO L225 Difference]: With dead ends: 1043 [2021-08-26 08:44:57,338 INFO L226 Difference]: Without dead ends: 712 [2021-08-26 08:44:57,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 08:44:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-08-26 08:44:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 358. [2021-08-26 08:44:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.3893557422969187) internal successors, (496), 357 states have internal predecessors, (496), 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) [2021-08-26 08:44:57,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 496 transitions. [2021-08-26 08:44:57,366 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 496 transitions. Word has length 51 [2021-08-26 08:44:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:57,366 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 496 transitions. [2021-08-26 08:44:57,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2021-08-26 08:44:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 496 transitions. [2021-08-26 08:44:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-08-26 08:44:57,367 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:57,367 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:57,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 08:44:57,368 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:57,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:57,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1478807349, now seen corresponding path program 1 times [2021-08-26 08:44:57,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:57,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179407349] [2021-08-26 08:44:57,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:57,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 08:44:57,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:57,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179407349] [2021-08-26 08:44:57,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179407349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:57,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:57,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:44:57,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125527435] [2021-08-26 08:44:57,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 08:44:57,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:57,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 08:44:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 08:44:57,422 INFO L87 Difference]: Start difference. First operand 358 states and 496 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-08-26 08:44:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:57,490 INFO L93 Difference]: Finished difference Result 832 states and 1157 transitions. [2021-08-26 08:44:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 08:44:57,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 51 [2021-08-26 08:44:57,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:57,493 INFO L225 Difference]: With dead ends: 832 [2021-08-26 08:44:57,493 INFO L226 Difference]: Without dead ends: 480 [2021-08-26 08:44:57,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-08-26 08:44:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 312. [2021-08-26 08:44:57,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.3762057877813505) internal successors, (428), 311 states have internal predecessors, (428), 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) [2021-08-26 08:44:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 428 transitions. [2021-08-26 08:44:57,524 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 428 transitions. Word has length 51 [2021-08-26 08:44:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:57,524 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 428 transitions. [2021-08-26 08:44:57,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-08-26 08:44:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 428 transitions. [2021-08-26 08:44:57,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-26 08:44:57,526 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:57,526 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:57,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 08:44:57,527 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:57,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:57,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1966410639, now seen corresponding path program 1 times [2021-08-26 08:44:57,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:57,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384762625] [2021-08-26 08:44:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:57,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:57,599 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-26 08:44:57,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:57,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384762625] [2021-08-26 08:44:57,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384762625] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:57,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:57,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:44:57,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525277103] [2021-08-26 08:44:57,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:44:57,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:57,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:44:57,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:57,607 INFO L87 Difference]: Start difference. First operand 312 states and 428 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-08-26 08:44:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:57,753 INFO L93 Difference]: Finished difference Result 829 states and 1141 transitions. [2021-08-26 08:44:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:44:57,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 52 [2021-08-26 08:44:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:57,757 INFO L225 Difference]: With dead ends: 829 [2021-08-26 08:44:57,757 INFO L226 Difference]: Without dead ends: 827 [2021-08-26 08:44:57,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:44:57,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-08-26 08:44:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 312. [2021-08-26 08:44:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.360128617363344) internal successors, (423), 311 states have internal predecessors, (423), 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) [2021-08-26 08:44:57,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 423 transitions. [2021-08-26 08:44:57,789 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 423 transitions. Word has length 52 [2021-08-26 08:44:57,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:57,791 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 423 transitions. [2021-08-26 08:44:57,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-08-26 08:44:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 423 transitions. [2021-08-26 08:44:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 08:44:57,791 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:57,792 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:57,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 08:44:57,793 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:57,793 INFO L82 PathProgramCache]: Analyzing trace with hash 134497996, now seen corresponding path program 1 times [2021-08-26 08:44:57,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:57,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357254389] [2021-08-26 08:44:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:57,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:57,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:57,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357254389] [2021-08-26 08:44:57,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357254389] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:44:57,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851096830] [2021-08-26 08:44:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:57,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:44:57,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:44:57,893 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 08:44:57,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 08:44:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:58,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 08:44:58,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:44:58,240 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:58,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851096830] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:44:58,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 08:44:58,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-26 08:44:58,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290744540] [2021-08-26 08:44:58,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 08:44:58,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 08:44:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:44:58,244 INFO L87 Difference]: Start difference. First operand 312 states and 423 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-08-26 08:44:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:58,410 INFO L93 Difference]: Finished difference Result 692 states and 939 transitions. [2021-08-26 08:44:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:44:58,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2021-08-26 08:44:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:58,413 INFO L225 Difference]: With dead ends: 692 [2021-08-26 08:44:58,413 INFO L226 Difference]: Without dead ends: 428 [2021-08-26 08:44:58,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-26 08:44:58,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-08-26 08:44:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 274. [2021-08-26 08:44:58,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.336996336996337) internal successors, (365), 273 states have internal predecessors, (365), 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) [2021-08-26 08:44:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 365 transitions. [2021-08-26 08:44:58,447 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 365 transitions. Word has length 53 [2021-08-26 08:44:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:58,447 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 365 transitions. [2021-08-26 08:44:58,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-08-26 08:44:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 365 transitions. [2021-08-26 08:44:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-08-26 08:44:58,448 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:58,448 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:58,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 08:44:58,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 08:44:58,673 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:58,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1809371945, now seen corresponding path program 2 times [2021-08-26 08:44:58,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:58,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158811935] [2021-08-26 08:44:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:58,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:44:58,720 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 08:44:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:44:58,798 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 08:44:58,799 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 08:44:58,799 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:44:58,801 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:44:58,801 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:44:58,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-26 08:44:58,806 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 08:44:58,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:44:58 BoogieIcfgContainer [2021-08-26 08:44:58,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 08:44:58,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 08:44:58,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 08:44:58,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 08:44:58,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:44:54" (3/4) ... [2021-08-26 08:44:58,925 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 08:44:59,025 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 08:44:59,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 08:44:59,027 INFO L168 Benchmark]: Toolchain (without parser) took 5673.06 ms. Allocated memory was 52.4 MB in the beginning and 142.6 MB in the end (delta: 90.2 MB). Free memory was 28.3 MB in the beginning and 102.9 MB in the end (delta: -74.6 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:59,027 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 08:44:59,027 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.29 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 38.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:59,028 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 62.9 MB. Free memory was 38.8 MB in the beginning and 34.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:59,028 INFO L168 Benchmark]: Boogie Preprocessor took 36.84 ms. Allocated memory is still 62.9 MB. Free memory was 34.9 MB in the beginning and 32.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:59,028 INFO L168 Benchmark]: RCFGBuilder took 844.18 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 28.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:59,031 INFO L168 Benchmark]: TraceAbstraction took 4162.12 ms. Allocated memory was 62.9 MB in the beginning and 142.6 MB in the end (delta: 79.7 MB). Free memory was 27.5 MB in the beginning and 56.4 MB in the end (delta: -28.9 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:59,032 INFO L168 Benchmark]: Witness Printer took 102.85 ms. Allocated memory is still 142.6 MB. Free memory was 56.4 MB in the beginning and 102.9 MB in the end (delta: -46.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:59,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 34.4 MB in the end (delta: 33.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 463.29 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 28.1 MB in the beginning and 38.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.09 ms. Allocated memory is still 62.9 MB. Free memory was 38.8 MB in the beginning and 34.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.84 ms. Allocated memory is still 62.9 MB. Free memory was 34.9 MB in the beginning and 32.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 844.18 ms. Allocated memory is still 62.9 MB. Free memory was 31.9 MB in the beginning and 28.2 MB in the end (delta: 3.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4162.12 ms. Allocated memory was 62.9 MB in the beginning and 142.6 MB in the end (delta: 79.7 MB). Free memory was 27.5 MB in the beginning and 56.4 MB in the end (delta: -28.9 MB). Peak memory consumption was 51.8 MB. Max. memory is 16.1 GB. * Witness Printer took 102.85 ms. Allocated memory is still 142.6 MB. Free memory was 56.4 MB in the beginning and 102.9 MB in the end (delta: -46.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 830]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L221] int pumpRunning = 0; [L222] int systemActive = 1; [L601] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L870] int waterLevel = 1; [L871] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L861] int retValue_acc ; [L864] retValue_acc = 1 [L865] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L148] int splverifierCounter ; [L149] int tmp ; [L150] int tmp___0 ; [L151] int tmp___1 ; [L152] int tmp___2 ; [L155] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L159] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L165] tmp = __VERIFIER_nondet_int() [L167] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L888] COND TRUE waterLevel < 2 [L889] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L229] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L236] COND TRUE \read(systemActive) [L284] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] COND FALSE !(\read(pumpRunning)) [L258] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L261] COND TRUE ! pumpRunning [L398] int retValue_acc ; [L399] int tmp ; [L400] int tmp___0 ; [L950] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L953] COND FALSE !(waterLevel < 2) [L957] retValue_acc = 0 [L958] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L404] tmp = isHighWaterSensorDry() [L406] COND FALSE !(\read(tmp)) [L409] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L411] retValue_acc = tmp___0 [L412] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L263] tmp = isHighWaterLevel() [L265] COND TRUE \read(tmp) [L317] int tmp ; [L342] int retValue_acc ; [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L346] retValue_acc = isMethaneLevelCritical() [L348] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] tmp = isMethaneAlarm() [L323] COND FALSE !(\read(tmp)) [L312] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L801] int tmp ; [L802] int tmp___0 ; [L941] int retValue_acc ; [L944] retValue_acc = waterLevel [L945] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L806] tmp = getWaterLevel() [L808] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L159] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L165] tmp = __VERIFIER_nondet_int() [L167] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L229] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L876] COND TRUE waterLevel > 0 [L877] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L236] COND TRUE \read(systemActive) [L284] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L287] COND TRUE \read(pumpRunning) [L342] int retValue_acc ; [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L346] retValue_acc = isMethaneLevelCritical() [L348] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L289] tmp = isMethaneAlarm() [L291] COND FALSE !(\read(tmp)) [L258] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L261] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L801] int tmp ; [L802] int tmp___0 ; [L941] int retValue_acc ; [L944] retValue_acc = waterLevel [L945] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L806] tmp = getWaterLevel() [L808] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L159] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L165] tmp = __VERIFIER_nondet_int() [L167] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L175] tmp___0 = __VERIFIER_nondet_int() [L177] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L185] tmp___2 = __VERIFIER_nondet_int() [L187] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L229] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L876] COND TRUE waterLevel > 0 [L877] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L236] COND TRUE \read(systemActive) [L284] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L287] COND TRUE \read(pumpRunning) [L342] int retValue_acc ; [L909] int retValue_acc ; [L912] retValue_acc = methaneLevelCritical [L913] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L346] retValue_acc = isMethaneLevelCritical() [L348] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L289] tmp = isMethaneAlarm() [L291] COND FALSE !(\read(tmp)) [L258] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L261] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L801] int tmp ; [L802] int tmp___0 ; [L941] int retValue_acc ; [L944] retValue_acc = waterLevel [L945] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L806] tmp = getWaterLevel() [L808] COND TRUE tmp == 0 [L353] int retValue_acc ; [L356] retValue_acc = pumpRunning [L357] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L810] tmp___0 = isPumpRunning() [L812] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L830] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 830]: 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: 830]: 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, 131 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3985.9ms, OverallIterations: 11, TraceHistogramMax: 3, EmptinessCheckTime: 25.6ms, AutomataDifference: 1294.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1163 SDtfs, 1881 SDslu, 2148 SDs, 0 SdLazy, 315 SolverSat, 72 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 567.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 289.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=7, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 277.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1529 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 93.1ms SsaConstructionTime, 474.3ms SatisfiabilityAnalysisTime, 933.4ms InterpolantComputationTime, 516 NumberOfCodeBlocks, 516 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 432 ConstructedInterpolants, 0 QuantifiedInterpolants, 818 SizeOfPredicates, 3 NumberOfNonLiveVariables, 814 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 87/98 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! [2021-08-26 08:44:59,072 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...