./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec3_product03.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_product03.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 fd97c2884595bd9a9b703dc95e9a5caeaf3b95ed9b6ed8cf435c9ebd351e9142 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:00:39,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:00:39,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:00:39,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:00:39,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:00:39,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:00:39,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:00:39,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:00:39,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:00:39,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:00:39,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:00:39,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:00:39,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:00:39,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:00:39,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:00:39,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:00:39,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:00:39,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:00:39,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:00:39,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:00:39,163 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:00:39,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:00:39,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:00:39,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:00:39,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:00:39,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:00:39,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:00:39,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:00:39,172 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:00:39,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:00:39,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:00:39,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:00:39,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:00:39,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:00:39,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:00:39,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:00:39,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:00:39,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:00:39,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:00:39,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:00:39,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:00:39,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:00:39,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:00:39,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:00:39,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:00:39,208 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:00:39,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:00:39,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:00:39,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:00:39,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:00:39,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:00:39,210 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:00:39,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:00:39,210 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:00:39,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:00:39,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:00:39,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:00:39,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:00:39,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:00:39,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:00:39,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:00:39,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:00:39,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:00:39,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:00:39,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:00:39,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:00:39,217 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:00:39,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:00:39,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:00:39,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd97c2884595bd9a9b703dc95e9a5caeaf3b95ed9b6ed8cf435c9ebd351e9142 [2022-07-21 05:00:39,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:00:39,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:00:39,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:00:39,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:00:39,493 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:00:39,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec3_product03.cil.c [2022-07-21 05:00:39,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751acdbf4/95bdf83197ee44bb9130f61388a97bae/FLAG6c5d8d507 [2022-07-21 05:00:39,981 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:00:39,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec3_product03.cil.c [2022-07-21 05:00:39,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751acdbf4/95bdf83197ee44bb9130f61388a97bae/FLAG6c5d8d507 [2022-07-21 05:00:40,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/751acdbf4/95bdf83197ee44bb9130f61388a97bae [2022-07-21 05:00:40,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:00:40,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:00:40,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:00:40,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:00:40,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:00:40,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678d2e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40, skipping insertion in model container [2022-07-21 05:00:40,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:00:40,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:00:40,566 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_product03.cil.c[14430,14443] [2022-07-21 05:00:40,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:00:40,600 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:00:40,653 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_product03.cil.c[14430,14443] [2022-07-21 05:00:40,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:00:40,676 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:00:40,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40 WrapperNode [2022-07-21 05:00:40,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:00:40,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:00:40,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:00:40,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:00:40,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,723 INFO L137 Inliner]: procedures = 50, calls = 147, calls flagged for inlining = 19, calls inlined = 16, statements flattened = 199 [2022-07-21 05:00:40,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:00:40,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:00:40,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:00:40,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:00:40,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:00:40,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:00:40,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:00:40,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:00:40,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (1/1) ... [2022-07-21 05:00:40,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:00:40,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:00:40,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:00:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:00:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-21 05:00:40,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-21 05:00:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 05:00:40,841 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 05:00:40,841 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 05:00:40,841 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 05:00:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-21 05:00:40,842 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-21 05:00:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:00:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-21 05:00:40,842 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-21 05:00:40,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:00:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:00:40,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:00:40,913 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:00:40,914 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:00:41,200 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:00:41,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:00:41,205 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 05:00:41,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:00:41 BoogieIcfgContainer [2022-07-21 05:00:41,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:00:41,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:00:41,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:00:41,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:00:41,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:00:40" (1/3) ... [2022-07-21 05:00:41,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6723d2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:00:41, skipping insertion in model container [2022-07-21 05:00:41,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:00:40" (2/3) ... [2022-07-21 05:00:41,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6723d2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:00:41, skipping insertion in model container [2022-07-21 05:00:41,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:00:41" (3/3) ... [2022-07-21 05:00:41,212 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product03.cil.c [2022-07-21 05:00:41,222 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:00:41,224 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:00:41,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:00:41,280 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45ed91e1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@607da66c [2022-07-21 05:00:41,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:00:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 58 states have internal predecessors, (75), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 05:00:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 05:00:41,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:00:41,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:00:41,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:00:41,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:00:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 820054075, now seen corresponding path program 1 times [2022-07-21 05:00:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:00:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787455155] [2022-07-21 05:00:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:00:41,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:00:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:00:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:00:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:00:41,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787455155] [2022-07-21 05:00:41,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787455155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:00:41,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:00:41,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 05:00:41,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772992008] [2022-07-21 05:00:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:00:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 05:00:41,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:00:41,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 05:00:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 05:00:41,519 INFO L87 Difference]: Start difference. First operand has 68 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 58 states have internal predecessors, (75), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) 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) [2022-07-21 05:00:41,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:00:41,545 INFO L93 Difference]: Finished difference Result 128 states and 173 transitions. [2022-07-21 05:00:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 05:00:41,547 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 [2022-07-21 05:00:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:00:41,562 INFO L225 Difference]: With dead ends: 128 [2022-07-21 05:00:41,562 INFO L226 Difference]: Without dead ends: 59 [2022-07-21 05:00:41,566 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:00:41,569 INFO L413 NwaCegarLoop]: 83 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, 83 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 [2022-07-21 05:00:41,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:00:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-21 05:00:41,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-07-21 05:00:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.297872340425532) internal successors, (61), 50 states have internal predecessors, (61), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 05:00:41,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-07-21 05:00:41,609 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 25 [2022-07-21 05:00:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:00:41,610 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-07-21 05:00:41,611 INFO L496 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) [2022-07-21 05:00:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-07-21 05:00:41,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 05:00:41,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:00:41,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:00:41,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:00:41,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:00:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:00:41,616 INFO L85 PathProgramCache]: Analyzing trace with hash -633074439, now seen corresponding path program 1 times [2022-07-21 05:00:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:00:41,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282420184] [2022-07-21 05:00:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:00:41,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:00:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:00:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:00:41,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:00:41,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282420184] [2022-07-21 05:00:41,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282420184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:00:41,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:00:41,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:00:41,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323238172] [2022-07-21 05:00:41,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:00:41,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:00:41,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:00:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:00:41,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:00:41,691 INFO L87 Difference]: Start difference. First operand 59 states and 74 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) [2022-07-21 05:00:41,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:00:41,703 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2022-07-21 05:00:41,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:00:41,704 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 [2022-07-21 05:00:41,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:00:41,705 INFO L225 Difference]: With dead ends: 80 [2022-07-21 05:00:41,705 INFO L226 Difference]: Without dead ends: 50 [2022-07-21 05:00:41,705 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:00:41,706 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 101 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 [2022-07-21 05:00:41,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 101 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:00:41,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-21 05:00:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-07-21 05:00:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 44 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 05:00:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2022-07-21 05:00:41,719 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 26 [2022-07-21 05:00:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:00:41,720 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2022-07-21 05:00:41,723 INFO L496 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) [2022-07-21 05:00:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2022-07-21 05:00:41,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 05:00:41,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:00:41,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:00:41,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:00:41,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:00:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:00:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -728107618, now seen corresponding path program 1 times [2022-07-21 05:00:41,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:00:41,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342053733] [2022-07-21 05:00:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:00:41,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:00:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:00:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:00:41,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:00:41,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342053733] [2022-07-21 05:00:41,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342053733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:00:41,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:00:41,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:00:41,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504009945] [2022-07-21 05:00:41,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:00:41,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:00:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:00:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:00:41,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:00:41,806 INFO L87 Difference]: Start difference. First operand 50 states and 62 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) [2022-07-21 05:00:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:00:41,819 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2022-07-21 05:00:41,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:00:41,820 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 [2022-07-21 05:00:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:00:41,821 INFO L225 Difference]: With dead ends: 135 [2022-07-21 05:00:41,821 INFO L226 Difference]: Without dead ends: 92 [2022-07-21 05:00:41,821 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:00:41,822 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 42 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 117 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 [2022-07-21 05:00:41,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 117 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:00:41,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-07-21 05:00:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 87. [2022-07-21 05:00:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 75 states have internal predecessors, (94), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-21 05:00:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2022-07-21 05:00:41,847 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 30 [2022-07-21 05:00:41,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:00:41,847 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2022-07-21 05:00:41,847 INFO L496 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) [2022-07-21 05:00:41,848 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2022-07-21 05:00:41,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-21 05:00:41,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:00:41,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:00:41,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:00:41,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:00:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:00:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1676304469, now seen corresponding path program 1 times [2022-07-21 05:00:41,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:00:41,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467916674] [2022-07-21 05:00:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:00:41,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:00:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:00:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:00:41,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:00:41,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467916674] [2022-07-21 05:00:41,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467916674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:00:41,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:00:41,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:00:41,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712472218] [2022-07-21 05:00:41,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:00:41,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:00:41,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:00:41,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:00:41,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:00:41,946 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 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) [2022-07-21 05:00:42,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:00:42,015 INFO L93 Difference]: Finished difference Result 241 states and 317 transitions. [2022-07-21 05:00:42,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:00:42,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 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 31 [2022-07-21 05:00:42,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:00:42,020 INFO L225 Difference]: With dead ends: 241 [2022-07-21 05:00:42,021 INFO L226 Difference]: Without dead ends: 161 [2022-07-21 05:00:42,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:00:42,023 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 35 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:00:42,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 239 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:00:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-21 05:00:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2022-07-21 05:00:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 124 states have (on average 1.3225806451612903) internal successors, (164), 131 states have internal predecessors, (164), 16 states have call successors, (16), 16 states have call predecessors, (16), 14 states have return successors, (18), 14 states have call predecessors, (18), 16 states have call successors, (18) [2022-07-21 05:00:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2022-07-21 05:00:42,042 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 31 [2022-07-21 05:00:42,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:00:42,043 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2022-07-21 05:00:42,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 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) [2022-07-21 05:00:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2022-07-21 05:00:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-21 05:00:42,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:00:42,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:00:42,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:00:42,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:00:42,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:00:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash 531580838, now seen corresponding path program 1 times [2022-07-21 05:00:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:00:42,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101175907] [2022-07-21 05:00:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:00:42,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:00:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 05:00:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:00:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:00:42,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:00:42,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101175907] [2022-07-21 05:00:42,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101175907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:00:42,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:00:42,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:00:42,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655857474] [2022-07-21 05:00:42,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:00:42,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:00:42,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:00:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:00:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:00:42,094 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-21 05:00:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:00:42,119 INFO L93 Difference]: Finished difference Result 264 states and 341 transitions. [2022-07-21 05:00:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:00:42,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 33 [2022-07-21 05:00:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:00:42,122 INFO L225 Difference]: With dead ends: 264 [2022-07-21 05:00:42,123 INFO L226 Difference]: Without dead ends: 147 [2022-07-21 05:00:42,127 INFO L412 NwaCegarLoop]: 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 [2022-07-21 05:00:42,132 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:00:42,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 53 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:00:42,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-21 05:00:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-07-21 05:00:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 123 states have internal predecessors, (148), 16 states have call successors, (16), 16 states have call predecessors, (16), 14 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-21 05:00:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 180 transitions. [2022-07-21 05:00:42,157 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 180 transitions. Word has length 33 [2022-07-21 05:00:42,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:00:42,157 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 180 transitions. [2022-07-21 05:00:42,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2022-07-21 05:00:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 180 transitions. [2022-07-21 05:00:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 05:00:42,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:00:42,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:00:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:00:42,159 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:00:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:00:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1750273851, now seen corresponding path program 1 times [2022-07-21 05:00:42,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:00:42,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100223428] [2022-07-21 05:00:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:00:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:00:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 05:00:42,173 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 05:00:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 05:00:42,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 05:00:42,205 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 05:00:42,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 05:00:42,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:00:42,211 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-21 05:00:42,213 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 05:00:42,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:00:42 BoogieIcfgContainer [2022-07-21 05:00:42,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 05:00:42,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 05:00:42,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 05:00:42,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 05:00:42,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:00:41" (3/4) ... [2022-07-21 05:00:42,251 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 05:00:42,285 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 05:00:42,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 05:00:42,290 INFO L158 Benchmark]: Toolchain (without parser) took 1930.00ms. Allocated memory was 52.4MB in the beginning and 83.9MB in the end (delta: 31.5MB). Free memory was 28.9MB in the beginning and 54.8MB in the end (delta: -25.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-07-21 05:00:42,290 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 52.4MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:00:42,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.81ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.8MB in the beginning and 51.7MB in the end (delta: -22.9MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-07-21 05:00:42,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.92ms. Allocated memory is still 69.2MB. Free memory was 51.7MB in the beginning and 49.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:00:42,291 INFO L158 Benchmark]: Boogie Preprocessor took 43.30ms. Allocated memory is still 69.2MB. Free memory was 49.3MB in the beginning and 48.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:00:42,291 INFO L158 Benchmark]: RCFGBuilder took 438.34ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 48.1MB in the end (delta: -287.7kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-21 05:00:42,291 INFO L158 Benchmark]: TraceAbstraction took 1040.86ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 47.8MB in the beginning and 58.6MB in the end (delta: -10.9MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2022-07-21 05:00:42,291 INFO L158 Benchmark]: Witness Printer took 40.14ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 54.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 05:00:42,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 52.4MB. Free memory is still 34.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.81ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 28.8MB in the beginning and 51.7MB in the end (delta: -22.9MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.92ms. Allocated memory is still 69.2MB. Free memory was 51.7MB in the beginning and 49.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.30ms. Allocated memory is still 69.2MB. Free memory was 49.3MB in the beginning and 48.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 438.34ms. Allocated memory is still 69.2MB. Free memory was 47.8MB in the beginning and 48.1MB in the end (delta: -287.7kB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1040.86ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 47.8MB in the beginning and 58.6MB in the end (delta: -10.9MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Witness Printer took 40.14ms. Allocated memory is still 83.9MB. Free memory was 58.6MB in the beginning and 54.8MB in the end (delta: 3.8MB). 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: 660]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L129] int pumpRunning = 0; [L130] int systemActive = 1; [L421] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L700] int cleanupTimeShifts = 4; [L796] int waterLevel = 1; [L797] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L773] int retValue_acc ; [L774] int tmp ; [L778] FCALL select_helpers() [L779] FCALL select_features() [L780] CALL, EXPR valid_product() [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L780] RET, EXPR valid_product() [L780] tmp = valid_product() [L782] COND TRUE \read(tmp) [L784] FCALL setup() [L785] CALL runTest() [L767] CALL test() [L56] int splverifierCounter ; [L57] int tmp ; [L58] int tmp___0 ; [L59] int tmp___1 ; [L60] int tmp___2 ; [L63] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L65] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L67] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L73] tmp = __VERIFIER_nondet_int() [L75] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L77] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L814] COND TRUE waterLevel < 2 [L815] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L77] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L83] tmp___0 = __VERIFIER_nondet_int() [L85] 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] [L93] tmp___2 = __VERIFIER_nondet_int() [L95] 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] [L110] CALL timeShift() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L137] COND FALSE !(\read(pumpRunning)) VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L144] COND TRUE \read(systemActive) [L146] FCALL processEnvironment() [L152] CALL __utac_acc__Specification3_spec__1() [L667] int tmp ; [L668] int tmp___0 ; [L669] int tmp___1 ; VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L835] int retValue_acc ; [L838] retValue_acc = methaneLevelCritical [L839] return (retValue_acc); VAL [\old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L673] tmp = isMethaneLevelCritical() [L675] COND FALSE !(\read(tmp)) [L679] CALL, EXPR getWaterLevel() [L867] int retValue_acc ; [L870] retValue_acc = waterLevel [L871] return (retValue_acc); VAL [\old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=1, waterLevel=2] [L679] RET, EXPR getWaterLevel() [L679] tmp___0 = getWaterLevel() [L681] COND TRUE tmp___0 == 2 [L683] CALL, EXPR isPumpRunning() [L192] int retValue_acc ; [L195] retValue_acc = pumpRunning [L196] return (retValue_acc); VAL [\old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L683] RET, EXPR isPumpRunning() [L683] tmp___1 = isPumpRunning() [L685] COND FALSE !(\read(tmp___1)) [L689] CALL __automaton_fail() [L660] reach_error() VAL [\old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 593 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 267 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 326 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred 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, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 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! [2022-07-21 05:00:42,324 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