./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product19.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_spec3_product19.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 310c99156af564276fd2307b8bd19d77055bd9a88be466df2e869c4dbf78e36f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 15:08:09,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 15:08:09,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 15:08:09,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 15:08:09,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 15:08:09,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 15:08:09,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 15:08:09,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 15:08:09,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 15:08:09,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 15:08:09,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 15:08:09,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 15:08:09,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 15:08:09,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 15:08:09,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 15:08:09,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 15:08:09,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 15:08:09,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 15:08:09,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 15:08:09,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 15:08:09,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 15:08:09,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 15:08:09,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 15:08:09,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 15:08:09,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 15:08:09,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 15:08:09,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 15:08:09,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 15:08:09,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 15:08:09,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 15:08:09,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 15:08:09,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 15:08:09,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 15:08:09,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 15:08:09,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 15:08:09,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 15:08:09,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 15:08:09,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 15:08:09,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 15:08:09,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 15:08:09,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 15:08:09,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 15:08:09,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 15:08:09,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 15:08:09,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 15:08:09,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 15:08:09,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 15:08:09,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 15:08:09,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 15:08:09,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 15:08:09,487 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 15:08:09,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 15:08:09,488 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 15:08:09,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 15:08:09,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 15:08:09,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 15:08:09,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 15:08:09,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 15:08:09,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 15:08:09,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 15:08:09,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 15:08:09,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 15:08:09,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 15:08:09,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 15:08:09,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 15:08:09,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 15:08:09,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:08:09,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 15:08:09,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 15:08:09,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 15:08:09,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 15:08:09,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 15:08:09,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 15:08:09,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 15:08:09,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 15:08:09,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 15:08:09,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 310c99156af564276fd2307b8bd19d77055bd9a88be466df2e869c4dbf78e36f [2021-12-17 15:08:09,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 15:08:09,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 15:08:09,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 15:08:09,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 15:08:09,743 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 15:08:09,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product19.cil.c [2021-12-17 15:08:09,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/494e0d79e/0f17d12170954de4bc9a7151eadd95c6/FLAG6935565d4 [2021-12-17 15:08:10,232 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 15:08:10,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product19.cil.c [2021-12-17 15:08:10,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/494e0d79e/0f17d12170954de4bc9a7151eadd95c6/FLAG6935565d4 [2021-12-17 15:08:10,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/494e0d79e/0f17d12170954de4bc9a7151eadd95c6 [2021-12-17 15:08:10,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 15:08:10,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 15:08:10,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 15:08:10,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 15:08:10,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 15:08:10,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:08:10" (1/1) ... [2021-12-17 15:08:10,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28243c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:10, skipping insertion in model container [2021-12-17 15:08:10,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 03:08:10" (1/1) ... [2021-12-17 15:08:10,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 15:08:10,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 15:08:10,798 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_spec3_product19.cil.c[1605,1618] [2021-12-17 15:08:10,954 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:08:10,965 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 15:08:10,982 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_spec3_product19.cil.c[1605,1618] [2021-12-17 15:08:11,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 15:08:11,057 INFO L208 MainTranslator]: Completed translation [2021-12-17 15:08:11,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11 WrapperNode [2021-12-17 15:08:11,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 15:08:11,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 15:08:11,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 15:08:11,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 15:08:11,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,126 INFO L137 Inliner]: procedures = 53, calls = 152, calls flagged for inlining = 20, calls inlined = 17, statements flattened = 228 [2021-12-17 15:08:11,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 15:08:11,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 15:08:11,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 15:08:11,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 15:08:11,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 15:08:11,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 15:08:11,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 15:08:11,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 15:08:11,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (1/1) ... [2021-12-17 15:08:11,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 15:08:11,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 15:08:11,208 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 15:08:11,231 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 15:08:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 15:08:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-17 15:08:11,253 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-17 15:08:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-17 15:08:11,254 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-17 15:08:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-17 15:08:11,254 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-17 15:08:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-12-17 15:08:11,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-12-17 15:08:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-17 15:08:11,255 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-17 15:08:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-17 15:08:11,255 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-17 15:08:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 15:08:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-17 15:08:11,256 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-17 15:08:11,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 15:08:11,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 15:08:11,341 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 15:08:11,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 15:08:11,607 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 15:08:11,614 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 15:08:11,615 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 15:08:11,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:08:11 BoogieIcfgContainer [2021-12-17 15:08:11,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 15:08:11,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 15:08:11,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 15:08:11,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 15:08:11,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 03:08:10" (1/3) ... [2021-12-17 15:08:11,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2fdbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:08:11, skipping insertion in model container [2021-12-17 15:08:11,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 03:08:11" (2/3) ... [2021-12-17 15:08:11,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c2fdbd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 03:08:11, skipping insertion in model container [2021-12-17 15:08:11,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:08:11" (3/3) ... [2021-12-17 15:08:11,626 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product19.cil.c [2021-12-17 15:08:11,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 15:08:11,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 15:08:11,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 15:08:11,699 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 15:08:11,699 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 15:08:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 69 states have internal predecessors, (86), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-17 15:08:11,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-17 15:08:11,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:11,722 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] [2021-12-17 15:08:11,723 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:11,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1452553281, now seen corresponding path program 1 times [2021-12-17 15:08:11,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:11,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77739054] [2021-12-17 15:08:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:11,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-17 15:08:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:11,996 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 15:08:11,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:11,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77739054] [2021-12-17 15:08:11,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77739054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:11,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:11,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 15:08:12,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659693212] [2021-12-17 15:08:12,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:12,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 15:08:12,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 15:08:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 15:08:12,038 INFO L87 Difference]: Start difference. First operand has 82 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 69 states have internal predecessors, (86), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 15:08:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:12,078 INFO L93 Difference]: Finished difference Result 156 states and 211 transitions. [2021-12-17 15:08:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 15:08:12,080 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 25 [2021-12-17 15:08:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:12,089 INFO L225 Difference]: With dead ends: 156 [2021-12-17 15:08:12,089 INFO L226 Difference]: Without dead ends: 73 [2021-12-17 15:08:12,093 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 15:08:12,096 INFO L933 BasicCegarLoop]: 102 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, 102 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 15:08:12,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-17 15:08:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-12-17 15:08:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.309090909090909) internal successors, (72), 61 states have internal predecessors, (72), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-17 15:08:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2021-12-17 15:08:12,143 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 25 [2021-12-17 15:08:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:12,144 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2021-12-17 15:08:12,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 15:08:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2021-12-17 15:08:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-17 15:08:12,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:12,149 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] [2021-12-17 15:08:12,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 15:08:12,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:12,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1317189843, now seen corresponding path program 1 times [2021-12-17 15:08:12,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:12,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687168306] [2021-12-17 15:08:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:12,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 15:08:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,249 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 15:08:12,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:12,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687168306] [2021-12-17 15:08:12,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687168306] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:12,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:12,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:08:12,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572460366] [2021-12-17 15:08:12,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:12,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:08:12,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:08:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:12,253 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 15:08:12,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:12,269 INFO L93 Difference]: Finished difference Result 108 states and 136 transitions. [2021-12-17 15:08:12,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:08:12,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 26 [2021-12-17 15:08:12,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:12,271 INFO L225 Difference]: With dead ends: 108 [2021-12-17 15:08:12,271 INFO L226 Difference]: Without dead ends: 64 [2021-12-17 15:08:12,272 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 15:08:12,273 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 16 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 139 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 15:08:12,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:12,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-17 15:08:12,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-17 15:08:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 55 states have internal predecessors, (65), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-17 15:08:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2021-12-17 15:08:12,288 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 26 [2021-12-17 15:08:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:12,288 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2021-12-17 15:08:12,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 15:08:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2021-12-17 15:08:12,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 15:08:12,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:12,290 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] [2021-12-17 15:08:12,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 15:08:12,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash 755375039, now seen corresponding path program 1 times [2021-12-17 15:08:12,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:12,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796369834] [2021-12-17 15:08:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:12,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:08:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,350 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 15:08:12,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:12,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796369834] [2021-12-17 15:08:12,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796369834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:12,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:12,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:08:12,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326737246] [2021-12-17 15:08:12,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:12,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:08:12,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:08:12,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:12,353 INFO L87 Difference]: Start difference. First operand 64 states and 81 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 15:08:12,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:12,382 INFO L93 Difference]: Finished difference Result 177 states and 229 transitions. [2021-12-17 15:08:12,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:08:12,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 30 [2021-12-17 15:08:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:12,390 INFO L225 Difference]: With dead ends: 177 [2021-12-17 15:08:12,390 INFO L226 Difference]: Without dead ends: 120 [2021-12-17 15:08:12,393 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 15:08:12,399 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 61 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:12,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 175 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-17 15:08:12,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2021-12-17 15:08:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 99 states have internal predecessors, (119), 16 states have call successors, (16), 12 states have call predecessors, (16), 12 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-17 15:08:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 151 transitions. [2021-12-17 15:08:12,422 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 151 transitions. Word has length 30 [2021-12-17 15:08:12,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:12,422 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 151 transitions. [2021-12-17 15:08:12,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 15:08:12,423 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 151 transitions. [2021-12-17 15:08:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-17 15:08:12,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:12,430 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] [2021-12-17 15:08:12,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 15:08:12,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:12,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:12,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1326960786, now seen corresponding path program 1 times [2021-12-17 15:08:12,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:12,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853250412] [2021-12-17 15:08:12,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:12,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 15:08:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 15:08:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,546 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 15:08:12,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:12,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853250412] [2021-12-17 15:08:12,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853250412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:12,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:12,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 15:08:12,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450209709] [2021-12-17 15:08:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:12,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 15:08:12,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:12,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 15:08:12,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 15:08:12,551 INFO L87 Difference]: Start difference. First operand 117 states and 151 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 15:08:12,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:12,660 INFO L93 Difference]: Finished difference Result 331 states and 440 transitions. [2021-12-17 15:08:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 15:08:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-12-17 15:08:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:12,663 INFO L225 Difference]: With dead ends: 331 [2021-12-17 15:08:12,664 INFO L226 Difference]: Without dead ends: 221 [2021-12-17 15:08:12,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 15:08:12,665 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 52 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:12,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 323 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-17 15:08:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 215. [2021-12-17 15:08:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 160 states have (on average 1.3375) internal successors, (214), 179 states have internal predecessors, (214), 32 states have call successors, (32), 24 states have call predecessors, (32), 22 states have return successors, (34), 20 states have call predecessors, (34), 32 states have call successors, (34) [2021-12-17 15:08:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 280 transitions. [2021-12-17 15:08:12,691 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 280 transitions. Word has length 35 [2021-12-17 15:08:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:12,691 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 280 transitions. [2021-12-17 15:08:12,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 15:08:12,692 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 280 transitions. [2021-12-17 15:08:12,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-17 15:08:12,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:12,694 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] [2021-12-17 15:08:12,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 15:08:12,695 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:12,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash 942143177, now seen corresponding path program 1 times [2021-12-17 15:08:12,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:12,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363337495] [2021-12-17 15:08:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:12,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 15:08:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-17 15:08:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 15:08:12,729 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 15:08:12,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 15:08:12,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363337495] [2021-12-17 15:08:12,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363337495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 15:08:12,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 15:08:12,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 15:08:12,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290121539] [2021-12-17 15:08:12,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 15:08:12,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 15:08:12,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 15:08:12,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 15:08:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 15:08:12,732 INFO L87 Difference]: Start difference. First operand 215 states and 280 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 15:08:12,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 15:08:12,767 INFO L93 Difference]: Finished difference Result 373 states and 489 transitions. [2021-12-17 15:08:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 15:08:12,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-12-17 15:08:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 15:08:12,769 INFO L225 Difference]: With dead ends: 373 [2021-12-17 15:08:12,770 INFO L226 Difference]: Without dead ends: 165 [2021-12-17 15:08:12,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 15:08:12,771 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 15:08:12,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 56 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 15:08:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-17 15:08:12,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2021-12-17 15:08:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 124 states have (on average 1.2580645161290323) internal successors, (156), 131 states have internal predecessors, (156), 20 states have call successors, (20), 20 states have call predecessors, (20), 18 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-17 15:08:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 196 transitions. [2021-12-17 15:08:12,793 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 196 transitions. Word has length 37 [2021-12-17 15:08:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 15:08:12,794 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 196 transitions. [2021-12-17 15:08:12,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 15:08:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 196 transitions. [2021-12-17 15:08:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-17 15:08:12,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 15:08:12,796 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] [2021-12-17 15:08:12,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 15:08:12,796 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 15:08:12,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 15:08:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1101152696, now seen corresponding path program 1 times [2021-12-17 15:08:12,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 15:08:12,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602585601] [2021-12-17 15:08:12,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 15:08:12,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 15:08:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 15:08:12,854 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 15:08:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 15:08:12,906 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 15:08:12,906 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 15:08:12,907 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 15:08:12,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 15:08:12,913 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-17 15:08:12,916 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 15:08:12,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 03:08:12 BoogieIcfgContainer [2021-12-17 15:08:12,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 15:08:12,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 15:08:12,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 15:08:12,957 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 15:08:12,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 03:08:11" (3/4) ... [2021-12-17 15:08:12,959 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-17 15:08:13,006 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 15:08:13,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 15:08:13,007 INFO L158 Benchmark]: Toolchain (without parser) took 2430.23ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 74.4MB in the beginning and 87.8MB in the end (delta: -13.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-12-17 15:08:13,007 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 15:08:13,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.97ms. Allocated memory is still 104.9MB. Free memory was 74.1MB in the beginning and 72.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 15:08:13,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.78ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 70.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 15:08:13,008 INFO L158 Benchmark]: Boogie Preprocessor took 48.19ms. Allocated memory is still 104.9MB. Free memory was 70.6MB in the beginning and 69.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 15:08:13,008 INFO L158 Benchmark]: RCFGBuilder took 441.06ms. Allocated memory is still 104.9MB. Free memory was 68.8MB in the beginning and 53.8MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-17 15:08:13,009 INFO L158 Benchmark]: TraceAbstraction took 1336.82ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 53.2MB in the beginning and 92.8MB in the end (delta: -39.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 15:08:13,009 INFO L158 Benchmark]: Witness Printer took 49.67ms. Allocated memory is still 125.8MB. Free memory was 92.0MB in the beginning and 87.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 15:08:13,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 48.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.97ms. Allocated memory is still 104.9MB. Free memory was 74.1MB in the beginning and 72.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.78ms. Allocated memory is still 104.9MB. Free memory was 72.9MB in the beginning and 70.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.19ms. Allocated memory is still 104.9MB. Free memory was 70.6MB in the beginning and 69.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 441.06ms. Allocated memory is still 104.9MB. Free memory was 68.8MB in the beginning and 53.8MB in the end (delta: 15.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1336.82ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 53.2MB in the beginning and 92.8MB in the end (delta: -39.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 49.67ms. Allocated memory is still 125.8MB. Free memory was 92.0MB in the beginning and 87.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L303] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L500] int cleanupTimeShifts = 4; [L604] int waterLevel = 1; [L605] int methaneLevelCritical = 0; [L763] int pumpRunning = 0; [L764] int systemActive = 1; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L578] int retValue_acc ; [L579] int tmp ; [L583] FCALL select_helpers() [L584] FCALL select_features() [L585] CALL, EXPR valid_product() [L88] int retValue_acc ; [L91] retValue_acc = 1 [L92] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L585] RET, EXPR valid_product() [L585] tmp = valid_product() [L587] COND TRUE \read(tmp) [L589] FCALL setup() [L590] CALL runTest() [L572] CALL test() [L695] int splverifierCounter ; [L696] int tmp ; [L697] int tmp___0 ; [L698] int tmp___1 ; [L699] int tmp___2 ; [L702] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L704] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L706] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L712] tmp = __VERIFIER_nondet_int() [L714] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L716] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L622] COND TRUE waterLevel < 2 [L623] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L716] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L722] tmp___0 = __VERIFIER_nondet_int() [L724] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L732] tmp___2 = __VERIFIER_nondet_int() [L734] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L749] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L770] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L777] COND TRUE \read(systemActive) [L779] CALL processEnvironment() [L799] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L802] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L817] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L779] RET processEnvironment() [L785] CALL __utac_acc__Specification3_spec__1() [L101] int tmp ; [L102] int tmp___0 ; [L103] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L107] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L643] int retValue_acc ; [L646] retValue_acc = methaneLevelCritical [L647] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L107] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L107] tmp = isMethaneLevelCritical() [L109] COND FALSE !(\read(tmp)) [L113] CALL, EXPR getWaterLevel() [L675] int retValue_acc ; [L678] retValue_acc = waterLevel [L679] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=1, waterLevel=2] [L113] RET, EXPR getWaterLevel() [L113] tmp___0 = getWaterLevel() [L115] COND TRUE tmp___0 == 2 [L117] CALL, EXPR isPumpRunning() [L851] int retValue_acc ; [L854] retValue_acc = pumpRunning [L855] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L117] RET, EXPR isPumpRunning() [L117] tmp___1 = isPumpRunning() [L119] COND FALSE !(\read(tmp___1)) [L123] CALL __automaton_fail() [L54] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 173 mSDsluCounter, 795 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 367 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 428 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 15:08:13,051 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