./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product37.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 577813f622c64f907053c4832aa01617433208d6dc94051427e21d3f2bb7bdeb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:06:48,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:06:48,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:06:49,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:06:49,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:06:49,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:06:49,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:06:49,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:06:49,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:06:49,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:06:49,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:06:49,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:06:49,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:06:49,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:06:49,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:06:49,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:06:49,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:06:49,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:06:49,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:06:49,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:06:49,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:06:49,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:06:49,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:06:49,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:06:49,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:06:49,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:06:49,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:06:49,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:06:49,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:06:49,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:06:49,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:06:49,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:06:49,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:06:49,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:06:49,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:06:49,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:06:49,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:06:49,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:06:49,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:06:49,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:06:49,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:06:49,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:06:49,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:06:49,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:06:49,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:06:49,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:06:49,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:06:49,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:06:49,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:06:49,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:06:49,150 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:06:49,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:06:49,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:06:49,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:06:49,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:06:49,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:06:49,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:06:49,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:06:49,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:06:49,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:06:49,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:06:49,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:06:49,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:06:49,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:06:49,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:06:49,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:06:49,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:06:49,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:06:49,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:06:49,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:06:49,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:06:49,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:06:49,155 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:06:49,155 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:06:49,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:06:49,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:06:49,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 577813f622c64f907053c4832aa01617433208d6dc94051427e21d3f2bb7bdeb [2021-12-17 15:06:49,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:06:49,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:06:49,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:06:49,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:06:49,495 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:06:49,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2021-12-17 15:06:49,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98601b355/c2cbf8aaf5a4416c83d1d19ab8620384/FLAG4f15eb708 [2021-12-17 15:06:49,902 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:06:49,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c [2021-12-17 15:06:49,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98601b355/c2cbf8aaf5a4416c83d1d19ab8620384/FLAG4f15eb708 [2021-12-17 15:06:50,305 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98601b355/c2cbf8aaf5a4416c83d1d19ab8620384 [2021-12-17 15:06:50,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:06:50,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:06:50,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:06:50,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:06:50,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:06:50,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d187ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50, skipping insertion in model container [2021-12-17 15:06:50,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:06:50,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:06:50,747 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c[13023,13036] [2021-12-17 15:06:50,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:06:50,770 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:06:50,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product37.cil.c[13023,13036] [2021-12-17 15:06:50,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:06:50,857 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:06:50,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50 WrapperNode [2021-12-17 15:06:50,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:06:50,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:06:50,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:06:50,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:06:50,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,918 INFO L137 Inliner]: procedures = 53, calls = 153, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 239 [2021-12-17 15:06:50,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:06:50,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:06:50,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:06:50,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:06:50,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:06:50,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:06:50,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:06:50,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:06:50,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (1/1) ... [2021-12-17 15:06:50,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:06:50,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:06:51,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 15:06:51,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 15:06:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:06:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-17 15:06:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-17 15:06:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-17 15:06:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-17 15:06:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 15:06:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 15:06:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 15:06:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 15:06:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-17 15:06:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-17 15:06:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-17 15:06:51,090 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-17 15:06:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:06:51,090 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-17 15:06:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-17 15:06:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:06:51,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:06:51,203 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:06:51,206 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:06:51,632 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:06:51,638 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:06:51,655 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 15:06:51,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:06:51 BoogieIcfgContainer [2021-12-17 15:06:51,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:06:51,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:06:51,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:06:51,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:06:51,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:06:50" (1/3) ... [2021-12-17 15:06:51,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334644f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:06:51, skipping insertion in model container [2021-12-17 15:06:51,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:06:50" (2/3) ... [2021-12-17 15:06:51,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334644f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:06:51, skipping insertion in model container [2021-12-17 15:06:51,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:06:51" (3/3) ... [2021-12-17 15:06:51,677 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product37.cil.c [2021-12-17 15:06:51,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:06:51,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:06:51,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:06:51,777 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 15:06:51,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:06:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 64 states have (on average 1.390625) internal successors, (89), 72 states have internal predecessors, (89), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-17 15:06:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-17 15:06:51,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:51,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:51,810 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:51,814 INFO L85 PathProgramCache]: Analyzing trace with hash -706687540, now seen corresponding path program 1 times [2021-12-17 15:06:51,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:51,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167623245] [2021-12-17 15:06:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:51,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 15:06:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:52,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167623245] [2021-12-17 15:06:52,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167623245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:52,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:52,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 15:06:52,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157525780] [2021-12-17 15:06:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:52,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 15:06:52,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:52,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 15:06:52,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:06:52,063 INFO L87 Difference]: Start difference. First operand has 85 states, 64 states have (on average 1.390625) internal successors, (89), 72 states have internal predecessors, (89), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:06:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:52,097 INFO L93 Difference]: Finished difference Result 162 states and 221 transitions. [2021-12-17 15:06:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 15:06:52,099 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-17 15:06:52,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:52,105 INFO L225 Difference]: With dead ends: 162 [2021-12-17 15:06:52,105 INFO L226 Difference]: Without dead ends: 76 [2021-12-17 15:06:52,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:06:52,111 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:52,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:06:52,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-17 15:06:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-12-17 15:06:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 64 states have internal predecessors, (75), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-17 15:06:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-12-17 15:06:52,189 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 23 [2021-12-17 15:06:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:52,190 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-12-17 15:06:52,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:06:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-12-17 15:06:52,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 15:06:52,192 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:52,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:52,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:06:52,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:52,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash -495697199, now seen corresponding path program 1 times [2021-12-17 15:06:52,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:52,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257568192] [2021-12-17 15:06:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:52,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:06:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:52,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:52,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257568192] [2021-12-17 15:06:52,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257568192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:52,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:52,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:06:52,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961258676] [2021-12-17 15:06:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:52,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:06:52,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:06:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:06:52,237 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:06:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:52,247 INFO L93 Difference]: Finished difference Result 118 states and 152 transitions. [2021-12-17 15:06:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:06:52,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-17 15:06:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:52,249 INFO L225 Difference]: With dead ends: 118 [2021-12-17 15:06:52,249 INFO L226 Difference]: Without dead ends: 67 [2021-12-17 15:06:52,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:06:52,251 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 12 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:52,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 154 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:06:52,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-17 15:06:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-12-17 15:06:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 58 states have internal predecessors, (68), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-17 15:06:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2021-12-17 15:06:52,258 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 24 [2021-12-17 15:06:52,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:52,258 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2021-12-17 15:06:52,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:06:52,258 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2021-12-17 15:06:52,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 15:06:52,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:52,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:52,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:06:52,259 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:52,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1824556621, now seen corresponding path program 1 times [2021-12-17 15:06:52,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:52,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050341948] [2021-12-17 15:06:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:52,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:06:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:52,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:52,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050341948] [2021-12-17 15:06:52,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050341948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:52,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:52,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:06:52,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913160501] [2021-12-17 15:06:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:52,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:06:52,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:06:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:06:52,314 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:06:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:52,325 INFO L93 Difference]: Finished difference Result 127 states and 166 transitions. [2021-12-17 15:06:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:06:52,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-17 15:06:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:52,327 INFO L225 Difference]: With dead ends: 127 [2021-12-17 15:06:52,327 INFO L226 Difference]: Without dead ends: 67 [2021-12-17 15:06:52,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:06:52,328 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:52,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:06:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-17 15:06:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-12-17 15:06:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 58 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-17 15:06:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2021-12-17 15:06:52,337 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 28 [2021-12-17 15:06:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:52,338 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-12-17 15:06:52,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 15:06:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2021-12-17 15:06:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-17 15:06:52,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:52,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:52,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:06:52,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:52,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash -412666649, now seen corresponding path program 1 times [2021-12-17 15:06:52,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:52,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040205587] [2021-12-17 15:06:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:52,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:06:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 15:06:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-17 15:06:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:52,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040205587] [2021-12-17 15:06:52,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040205587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:52,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:52,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:06:52,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861613566] [2021-12-17 15:06:52,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:52,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:06:52,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:06:52,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:06:52,394 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 15:06:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:52,515 INFO L93 Difference]: Finished difference Result 198 states and 251 transitions. [2021-12-17 15:06:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:06:52,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2021-12-17 15:06:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:52,524 INFO L225 Difference]: With dead ends: 198 [2021-12-17 15:06:52,524 INFO L226 Difference]: Without dead ends: 138 [2021-12-17 15:06:52,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:06:52,526 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 149 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:52,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 275 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:06:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-17 15:06:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2021-12-17 15:06:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 100 states have (on average 1.26) internal successors, (126), 107 states have internal predecessors, (126), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2021-12-17 15:06:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 161 transitions. [2021-12-17 15:06:52,566 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 161 transitions. Word has length 38 [2021-12-17 15:06:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:52,567 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 161 transitions. [2021-12-17 15:06:52,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 15:06:52,567 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 161 transitions. [2021-12-17 15:06:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-17 15:06:52,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:52,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:52,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:06:52,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1939232781, now seen corresponding path program 1 times [2021-12-17 15:06:52,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:52,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119920768] [2021-12-17 15:06:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:52,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:06:52,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 15:06:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:52,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:52,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119920768] [2021-12-17 15:06:52,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119920768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:52,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:52,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:06:52,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473770762] [2021-12-17 15:06:52,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:52,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:06:52,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:06:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:06:52,706 INFO L87 Difference]: Start difference. First operand 132 states and 161 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 15:06:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:52,806 INFO L93 Difference]: Finished difference Result 270 states and 336 transitions. [2021-12-17 15:06:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 15:06:52,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-12-17 15:06:52,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:52,809 INFO L225 Difference]: With dead ends: 270 [2021-12-17 15:06:52,810 INFO L226 Difference]: Without dead ends: 145 [2021-12-17 15:06:52,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 15:06:52,817 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 63 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:52,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 272 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:06:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-17 15:06:52,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 134. [2021-12-17 15:06:52,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 109 states have internal predecessors, (128), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2021-12-17 15:06:52,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2021-12-17 15:06:52,829 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 42 [2021-12-17 15:06:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:52,829 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2021-12-17 15:06:52,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 15:06:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2021-12-17 15:06:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-17 15:06:52,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:52,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:52,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:06:52,831 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:52,831 INFO L85 PathProgramCache]: Analyzing trace with hash -361589809, now seen corresponding path program 1 times [2021-12-17 15:06:52,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:52,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546200576] [2021-12-17 15:06:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:52,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:06:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 15:06:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:52,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:52,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546200576] [2021-12-17 15:06:52,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546200576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:52,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:52,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 15:06:52,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319018221] [2021-12-17 15:06:52,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:52,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 15:06:52,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:52,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 15:06:52,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 15:06:52,913 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 15:06:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:53,014 INFO L93 Difference]: Finished difference Result 269 states and 331 transitions. [2021-12-17 15:06:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:06:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-12-17 15:06:53,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:53,017 INFO L225 Difference]: With dead ends: 269 [2021-12-17 15:06:53,017 INFO L226 Difference]: Without dead ends: 142 [2021-12-17 15:06:53,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-17 15:06:53,018 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 56 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:53,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 346 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:06:53,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-17 15:06:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2021-12-17 15:06:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 112 states have internal predecessors, (131), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2021-12-17 15:06:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 166 transitions. [2021-12-17 15:06:53,027 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 166 transitions. Word has length 42 [2021-12-17 15:06:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:53,027 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 166 transitions. [2021-12-17 15:06:53,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 15:06:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 166 transitions. [2021-12-17 15:06:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-17 15:06:53,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:53,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:53,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:06:53,029 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:53,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:53,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1121584331, now seen corresponding path program 1 times [2021-12-17 15:06:53,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:53,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385209152] [2021-12-17 15:06:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:53,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:06:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 15:06:53,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:53,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:53,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385209152] [2021-12-17 15:06:53,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385209152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:53,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:53,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:06:53,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066101050] [2021-12-17 15:06:53,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:53,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:06:53,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:53,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:06:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:06:53,070 INFO L87 Difference]: Start difference. First operand 137 states and 166 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 15:06:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:53,207 INFO L93 Difference]: Finished difference Result 387 states and 491 transitions. [2021-12-17 15:06:53,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 15:06:53,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-12-17 15:06:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:53,209 INFO L225 Difference]: With dead ends: 387 [2021-12-17 15:06:53,209 INFO L226 Difference]: Without dead ends: 257 [2021-12-17 15:06:53,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:06:53,210 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 185 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:53,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 294 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:06:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-12-17 15:06:53,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2021-12-17 15:06:53,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 189 states have (on average 1.2433862433862435) internal successors, (235), 200 states have internal predecessors, (235), 30 states have call successors, (30), 28 states have call predecessors, (30), 29 states have return successors, (45), 30 states have call predecessors, (45), 30 states have call successors, (45) [2021-12-17 15:06:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 310 transitions. [2021-12-17 15:06:53,244 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 310 transitions. Word has length 42 [2021-12-17 15:06:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:53,245 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 310 transitions. [2021-12-17 15:06:53,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 15:06:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 310 transitions. [2021-12-17 15:06:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-17 15:06:53,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:53,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:53,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 15:06:53,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1480072959, now seen corresponding path program 1 times [2021-12-17 15:06:53,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:53,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438355723] [2021-12-17 15:06:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:53,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:06:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 15:06:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 15:06:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:53,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:53,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438355723] [2021-12-17 15:06:53,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438355723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:53,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:53,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:06:53,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387765518] [2021-12-17 15:06:53,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:53,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:06:53,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:53,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:06:53,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:06:53,351 INFO L87 Difference]: Start difference. First operand 249 states and 310 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 15:06:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:53,526 INFO L93 Difference]: Finished difference Result 739 states and 950 transitions. [2021-12-17 15:06:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 15:06:53,526 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2021-12-17 15:06:53,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:53,529 INFO L225 Difference]: With dead ends: 739 [2021-12-17 15:06:53,529 INFO L226 Difference]: Without dead ends: 497 [2021-12-17 15:06:53,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-12-17 15:06:53,531 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 135 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:53,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 340 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 15:06:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-17 15:06:53,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 477. [2021-12-17 15:06:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 358 states have (on average 1.2094972067039107) internal successors, (433), 379 states have internal predecessors, (433), 60 states have call successors, (60), 56 states have call predecessors, (60), 58 states have return successors, (95), 60 states have call predecessors, (95), 60 states have call successors, (95) [2021-12-17 15:06:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 588 transitions. [2021-12-17 15:06:53,561 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 588 transitions. Word has length 44 [2021-12-17 15:06:53,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:53,561 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 588 transitions. [2021-12-17 15:06:53,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 15:06:53,561 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 588 transitions. [2021-12-17 15:06:53,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-17 15:06:53,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:53,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:53,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 15:06:53,562 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:53,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 934540643, now seen corresponding path program 1 times [2021-12-17 15:06:53,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:53,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425991824] [2021-12-17 15:06:53,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:53,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 15:06:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 15:06:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 15:06:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 15:06:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:06:53,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 15:06:53,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:06:53,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425991824] [2021-12-17 15:06:53,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425991824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:06:53,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:06:53,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 15:06:53,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716927784] [2021-12-17 15:06:53,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:06:53,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 15:06:53,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:06:53,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 15:06:53,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:06:53,646 INFO L87 Difference]: Start difference. First operand 477 states and 588 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 15:06:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:06:53,944 INFO L93 Difference]: Finished difference Result 499 states and 617 transitions. [2021-12-17 15:06:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 15:06:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2021-12-17 15:06:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:06:53,948 INFO L225 Difference]: With dead ends: 499 [2021-12-17 15:06:53,948 INFO L226 Difference]: Without dead ends: 497 [2021-12-17 15:06:53,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-12-17 15:06:53,949 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 165 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 15:06:53,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 209 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 15:06:53,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-12-17 15:06:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 477. [2021-12-17 15:06:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 358 states have (on average 1.1983240223463687) internal successors, (429), 379 states have internal predecessors, (429), 60 states have call successors, (60), 56 states have call predecessors, (60), 58 states have return successors, (95), 60 states have call predecessors, (95), 60 states have call successors, (95) [2021-12-17 15:06:53,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2021-12-17 15:06:53,975 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 584 transitions. Word has length 48 [2021-12-17 15:06:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:06:53,975 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 584 transitions. [2021-12-17 15:06:53,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 15:06:53,976 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 584 transitions. [2021-12-17 15:06:53,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 15:06:53,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:06:53,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:53,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 15:06:53,977 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:06:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:06:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash -129816747, now seen corresponding path program 1 times [2021-12-17 15:06:53,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:06:53,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356586645] [2021-12-17 15:06:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:06:53,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:06:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 15:06:53,993 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 15:06:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 15:06:54,026 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 15:06:54,026 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 15:06:54,027 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 15:06:54,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 15:06:54,031 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 15:06:54,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 15:06:54,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 03:06:54 BoogieIcfgContainer [2021-12-17 15:06:54,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 15:06:54,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 15:06:54,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 15:06:54,076 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 15:06:54,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:06:51" (3/4) ... [2021-12-17 15:06:54,078 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-17 15:06:54,146 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 15:06:54,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 15:06:54,149 INFO L158 Benchmark]: Toolchain (without parser) took 3839.88ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 75.7MB in the beginning and 89.0MB in the end (delta: -13.3MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2021-12-17 15:06:54,149 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 41.8MB in the beginning and 41.7MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 15:06:54,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.53ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 76.8MB in the end (delta: -1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 15:06:54,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.71ms. Allocated memory is still 109.1MB. Free memory was 76.8MB in the beginning and 74.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 15:06:54,151 INFO L158 Benchmark]: Boogie Preprocessor took 30.88ms. Allocated memory is still 109.1MB. Free memory was 74.6MB in the beginning and 73.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 15:06:54,151 INFO L158 Benchmark]: RCFGBuilder took 699.23ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 57.3MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 15:06:54,152 INFO L158 Benchmark]: TraceAbstraction took 2415.93ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 56.5MB in the beginning and 94.2MB in the end (delta: -37.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-12-17 15:06:54,155 INFO L158 Benchmark]: Witness Printer took 73.08ms. Allocated memory is still 163.6MB. Free memory was 94.2MB in the beginning and 89.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-17 15:06:54,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory was 41.8MB in the beginning and 41.7MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 536.53ms. Allocated memory is still 109.1MB. Free memory was 75.5MB in the beginning and 76.8MB in the end (delta: -1.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.71ms. Allocated memory is still 109.1MB. Free memory was 76.8MB in the beginning and 74.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.88ms. Allocated memory is still 109.1MB. Free memory was 74.6MB in the beginning and 73.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 699.23ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 57.3MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2415.93ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 56.5MB in the beginning and 94.2MB in the end (delta: -37.8MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 73.08ms. Allocated memory is still 163.6MB. Free memory was 94.2MB in the beginning and 89.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 553]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int cleanupTimeShifts = 4; [L598] int pumpRunning = 0; [L599] int systemActive = 1; [L842] int waterLevel = 1; [L843] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L497] int retValue_acc ; [L498] int tmp ; [L502] FCALL select_helpers() [L503] FCALL select_features() [L504] CALL, EXPR valid_product() [L584] int retValue_acc ; [L587] retValue_acc = 1 [L588] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L504] RET, EXPR valid_product() [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) [L508] FCALL setup() [L509] CALL runTest() [L488] CALL test() [L777] int splverifierCounter ; [L778] int tmp ; [L779] int tmp___0 ; [L780] int tmp___1 ; [L781] int tmp___2 ; [L784] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L786] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L788] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L794] tmp = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L798] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L860] COND TRUE waterLevel < 2 [L861] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L798] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L804] tmp___0 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L808] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L872] COND FALSE !(\read(methaneLevelCritical)) [L875] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L814] tmp___2 = __VERIFIER_nondet_int() [L816] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=1, waterLevel=2] [L829] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L605] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L612] COND TRUE \read(systemActive) [L614] CALL processEnvironment() [L660] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L663] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L678] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L634] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L637] COND TRUE ! pumpRunning [L639] CALL, EXPR isHighWaterLevel() [L757] int retValue_acc ; [L758] int tmp ; [L759] int tmp___0 ; [L763] CALL, EXPR isHighWaterSensorDry() [L922] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L925] COND FALSE !(waterLevel < 2) [L929] retValue_acc = 0 [L930] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L763] RET, EXPR isHighWaterSensorDry() [L763] tmp = isHighWaterSensorDry() [L765] COND FALSE !(\read(tmp)) [L768] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L770] retValue_acc = tmp___0 [L771] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L639] RET, EXPR isHighWaterLevel() [L639] tmp = isHighWaterLevel() [L641] COND TRUE \read(tmp) [L643] CALL activatePump() [L688] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L643] RET activatePump() [L678] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L614] RET processEnvironment() [L620] CALL __utac_acc__Specification1_spec__1() [L524] int tmp ; [L525] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L529] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L881] int retValue_acc ; [L884] retValue_acc = methaneLevelCritical [L885] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L529] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L529] tmp = isMethaneLevelCritical() [L531] COND TRUE \read(tmp) [L533] CALL, EXPR isPumpRunning() [L712] int retValue_acc ; [L715] retValue_acc = pumpRunning [L716] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L533] RET, EXPR isPumpRunning() [L533] tmp___0 = isPumpRunning() [L535] COND TRUE \read(tmp___0) [L537] CALL __automaton_fail() [L553] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 862 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 833 mSDsluCounter, 2081 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1225 mSDsCounter, 230 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 860 IncrementalHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 230 mSolverCounterUnsat, 856 mSDtfsCounter, 860 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=477occurred in iteration=8, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 70 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 381 NumberOfCodeBlocks, 381 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 611 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-17 15:06:54,201 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE