./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec1_product35.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 d8d5749cb33f10edd647435755bf2e2192f6038b258c1bda289ea3f61ba8ee50 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:36:52,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:36:52,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:36:52,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:36:52,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:36:52,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:36:52,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:36:52,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:36:52,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:36:52,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:36:52,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:36:52,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:36:52,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:36:52,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:36:52,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:36:52,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:36:52,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:36:52,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:36:52,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:36:52,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:36:52,677 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:36:52,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:36:52,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:36:52,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:36:52,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:36:52,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:36:52,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:36:52,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:36:52,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:36:52,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:36:52,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:36:52,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:36:52,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:36:52,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:36:52,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:36:52,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:36:52,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:36:52,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:36:52,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:36:52,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:36:52,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:36:52,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:36:52,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:36:52,729 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:36:52,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:36:52,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:36:52,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:36:52,731 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:36:52,731 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:36:52,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:36:52,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:36:52,732 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:36:52,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:36:52,734 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:36:52,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:36:52,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:36:52,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:36:52,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:36:52,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:36:52,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:36:52,735 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:36:52,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:36:52,735 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:36:52,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:36:52,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:36:52,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:36:52,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:36:52,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:36:52,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:36:52,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:36:52,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:36:52,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:36:52,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:36:52,737 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:36:52,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:36:52,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:36:52,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8d5749cb33f10edd647435755bf2e2192f6038b258c1bda289ea3f61ba8ee50 [2022-07-22 17:36:52,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:36:53,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:36:53,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:36:53,013 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:36:53,013 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:36:53,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2022-07-22 17:36:53,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67282c80/627cec1f87064653984b71ae1eda2182/FLAG0ac49d8b3 [2022-07-22 17:36:53,499 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:36:53,499 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c [2022-07-22 17:36:53,508 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67282c80/627cec1f87064653984b71ae1eda2182/FLAG0ac49d8b3 [2022-07-22 17:36:53,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67282c80/627cec1f87064653984b71ae1eda2182 [2022-07-22 17:36:53,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:36:53,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:36:53,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:36:53,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:36:53,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:36:53,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:36:53" (1/1) ... [2022-07-22 17:36:53,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6eca72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:53, skipping insertion in model container [2022-07-22 17:36:53,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:36:53" (1/1) ... [2022-07-22 17:36:53,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:36:53,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:36:53,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c[3064,3077] [2022-07-22 17:36:53,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:36:53,921 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:36:53,957 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec1_product35.cil.c[3064,3077] [2022-07-22 17:36:54,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:36:54,038 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:36:54,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54 WrapperNode [2022-07-22 17:36:54,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:36:54,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:36:54,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:36:54,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:36:54,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,087 INFO L137 Inliner]: procedures = 53, calls = 151, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 224 [2022-07-22 17:36:54,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:36:54,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:36:54,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:36:54,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:36:54,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:36:54,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:36:54,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:36:54,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:36:54,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (1/1) ... [2022-07-22 17:36:54,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:36:54,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:36:54,161 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) [2022-07-22 17:36:54,167 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 [2022-07-22 17:36:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:36:54,190 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-07-22 17:36:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-07-22 17:36:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-22 17:36:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-22 17:36:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-22 17:36:54,191 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-22 17:36:54,191 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-07-22 17:36:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-07-22 17:36:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-07-22 17:36:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-07-22 17:36:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:36:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-07-22 17:36:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-07-22 17:36:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:36:54,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:36:54,252 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:36:54,254 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:36:54,567 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:36:54,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:36:54,575 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 17:36:54,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:36:54 BoogieIcfgContainer [2022-07-22 17:36:54,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:36:54,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:36:54,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:36:54,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:36:54,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:36:53" (1/3) ... [2022-07-22 17:36:54,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ea39ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:36:54, skipping insertion in model container [2022-07-22 17:36:54,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:36:54" (2/3) ... [2022-07-22 17:36:54,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ea39ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:36:54, skipping insertion in model container [2022-07-22 17:36:54,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:36:54" (3/3) ... [2022-07-22 17:36:54,587 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2022-07-22 17:36:54,602 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:36:54,603 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:36:54,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:36:54,661 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@52628004, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ec11092 [2022-07-22 17:36:54,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:36:54,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 67 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 17:36:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-22 17:36:54,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:54,676 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] [2022-07-22 17:36:54,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -257861563, now seen corresponding path program 1 times [2022-07-22 17:36:54,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:54,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461636378] [2022-07-22 17:36:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:54,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:54,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 17:36:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:54,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:54,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461636378] [2022-07-22 17:36:54,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461636378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:54,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:54,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 17:36:54,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13471078] [2022-07-22 17:36:54,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:54,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:36:54,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:36:54,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 17:36:54,971 INFO L87 Difference]: Start difference. First operand has 78 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 67 states have internal predecessors, (85), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:55,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:55,001 INFO L93 Difference]: Finished difference Result 148 states and 201 transitions. [2022-07-22 17:36:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:36:55,004 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-07-22 17:36:55,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:55,011 INFO L225 Difference]: With dead ends: 148 [2022-07-22 17:36:55,011 INFO L226 Difference]: Without dead ends: 69 [2022-07-22 17:36:55,014 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 [2022-07-22 17:36:55,017 INFO L413 NwaCegarLoop]: 97 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, 97 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 [2022-07-22 17:36:55,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:36:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-22 17:36:55,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-22 17:36:55,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 59 states have internal predecessors, (71), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-22 17:36:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2022-07-22 17:36:55,056 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 23 [2022-07-22 17:36:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:55,056 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2022-07-22 17:36:55,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2022-07-22 17:36:55,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 17:36:55,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:55,059 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] [2022-07-22 17:36:55,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:36:55,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash 202517142, now seen corresponding path program 1 times [2022-07-22 17:36:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:55,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023184428] [2022-07-22 17:36:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 17:36:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:55,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:55,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023184428] [2022-07-22 17:36:55,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023184428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:55,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:55,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:36:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398465195] [2022-07-22 17:36:55,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:55,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:36:55,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:36:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:36:55,151 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:55,166 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2022-07-22 17:36:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:36:55,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-07-22 17:36:55,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:55,174 INFO L225 Difference]: With dead ends: 100 [2022-07-22 17:36:55,176 INFO L226 Difference]: Without dead ends: 60 [2022-07-22 17:36:55,180 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 [2022-07-22 17:36:55,182 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 129 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 [2022-07-22 17:36:55,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 129 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:36:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-22 17:36:55,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-07-22 17:36:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 53 states have internal predecessors, (64), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-22 17:36:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2022-07-22 17:36:55,202 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 24 [2022-07-22 17:36:55,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:55,204 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2022-07-22 17:36:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2022-07-22 17:36:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 17:36:55,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:55,207 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] [2022-07-22 17:36:55,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:36:55,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:55,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:55,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1390976064, now seen corresponding path program 1 times [2022-07-22 17:36:55,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:55,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841315810] [2022-07-22 17:36:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:55,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:55,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:55,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841315810] [2022-07-22 17:36:55,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841315810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:55,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:55,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:36:55,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423579311] [2022-07-22 17:36:55,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:55,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:36:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:36:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:36:55,328 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:55,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:55,477 INFO L93 Difference]: Finished difference Result 204 states and 266 transitions. [2022-07-22 17:36:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:36:55,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-07-22 17:36:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:55,481 INFO L225 Difference]: With dead ends: 204 [2022-07-22 17:36:55,481 INFO L226 Difference]: Without dead ends: 151 [2022-07-22 17:36:55,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:36:55,483 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 162 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:55,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 421 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-22 17:36:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 141. [2022-07-22 17:36:55,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 121 states have internal predecessors, (150), 16 states have call successors, (16), 14 states have call predecessors, (16), 14 states have return successors, (17), 14 states have call predecessors, (17), 16 states have call successors, (17) [2022-07-22 17:36:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2022-07-22 17:36:55,520 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 28 [2022-07-22 17:36:55,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:55,520 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2022-07-22 17:36:55,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-22 17:36:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2022-07-22 17:36:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 17:36:55,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:55,524 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] [2022-07-22 17:36:55,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:36:55,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:55,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash -259101431, now seen corresponding path program 1 times [2022-07-22 17:36:55,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:55,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801396787] [2022-07-22 17:36:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:55,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:36:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:36:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:55,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:55,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801396787] [2022-07-22 17:36:55,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801396787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:55,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:55,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 17:36:55,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691916744] [2022-07-22 17:36:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:55,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:36:55,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:36:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 17:36:55,575 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-22 17:36:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:55,600 INFO L93 Difference]: Finished difference Result 348 states and 460 transitions. [2022-07-22 17:36:55,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:36:55,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 33 [2022-07-22 17:36:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:55,604 INFO L225 Difference]: With dead ends: 348 [2022-07-22 17:36:55,605 INFO L226 Difference]: Without dead ends: 214 [2022-07-22 17:36:55,607 INFO L412 NwaCegarLoop]: 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 [2022-07-22 17:36:55,609 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 49 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:55,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 126 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:36:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-22 17:36:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2022-07-22 17:36:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 163 states have (on average 1.3312883435582823) internal successors, (217), 176 states have internal predecessors, (217), 24 states have call successors, (24), 24 states have call predecessors, (24), 24 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2022-07-22 17:36:55,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 271 transitions. [2022-07-22 17:36:55,638 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 271 transitions. Word has length 33 [2022-07-22 17:36:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:55,640 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 271 transitions. [2022-07-22 17:36:55,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-07-22 17:36:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 271 transitions. [2022-07-22 17:36:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 17:36:55,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:55,641 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] [2022-07-22 17:36:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:36:55,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:55,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1332609653, now seen corresponding path program 1 times [2022-07-22 17:36:55,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:55,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009793827] [2022-07-22 17:36:55,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:55,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 17:36:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:55,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:55,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009793827] [2022-07-22 17:36:55,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009793827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:55,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:55,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:36:55,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32101950] [2022-07-22 17:36:55,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:55,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:36:55,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:55,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:36:55,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:36:55,728 INFO L87 Difference]: Start difference. First operand 212 states and 271 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-07-22 17:36:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:55,834 INFO L93 Difference]: Finished difference Result 625 states and 825 transitions. [2022-07-22 17:36:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:36:55,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 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 32 [2022-07-22 17:36:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:55,848 INFO L225 Difference]: With dead ends: 625 [2022-07-22 17:36:55,848 INFO L226 Difference]: Without dead ends: 420 [2022-07-22 17:36:55,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:36:55,856 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 48 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:55,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 361 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:55,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-07-22 17:36:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 405. [2022-07-22 17:36:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 308 states have (on average 1.301948051948052) internal successors, (401), 333 states have internal predecessors, (401), 48 states have call successors, (48), 48 states have call predecessors, (48), 48 states have return successors, (65), 48 states have call predecessors, (65), 48 states have call successors, (65) [2022-07-22 17:36:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 514 transitions. [2022-07-22 17:36:55,892 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 514 transitions. Word has length 32 [2022-07-22 17:36:55,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:55,893 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 514 transitions. [2022-07-22 17:36:55,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-07-22 17:36:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 514 transitions. [2022-07-22 17:36:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-22 17:36:55,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:55,896 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, 1] [2022-07-22 17:36:55,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:36:55,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:55,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:55,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1175402055, now seen corresponding path program 1 times [2022-07-22 17:36:55,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:55,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5570080] [2022-07-22 17:36:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:55,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:36:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 17:36:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:55,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:55,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5570080] [2022-07-22 17:36:55,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5570080] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:55,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:55,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:36:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543440311] [2022-07-22 17:36:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:36:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:55,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:36:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:36:55,976 INFO L87 Difference]: Start difference. First operand 405 states and 514 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:36:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:56,164 INFO L93 Difference]: Finished difference Result 422 states and 536 transitions. [2022-07-22 17:36:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:36:56,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 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 36 [2022-07-22 17:36:56,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:56,168 INFO L225 Difference]: With dead ends: 422 [2022-07-22 17:36:56,168 INFO L226 Difference]: Without dead ends: 420 [2022-07-22 17:36:56,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:36:56,169 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 93 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:56,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 178 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:56,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-07-22 17:36:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 405. [2022-07-22 17:36:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 308 states have (on average 1.2922077922077921) internal successors, (398), 333 states have internal predecessors, (398), 48 states have call successors, (48), 48 states have call predecessors, (48), 48 states have return successors, (65), 48 states have call predecessors, (65), 48 states have call successors, (65) [2022-07-22 17:36:56,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 511 transitions. [2022-07-22 17:36:56,197 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 511 transitions. Word has length 36 [2022-07-22 17:36:56,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:56,197 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 511 transitions. [2022-07-22 17:36:56,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 17:36:56,198 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 511 transitions. [2022-07-22 17:36:56,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 17:36:56,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:56,202 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, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:56,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:36:56,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:56,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1208470924, now seen corresponding path program 1 times [2022-07-22 17:36:56,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:56,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425036719] [2022-07-22 17:36:56,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:56,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:36:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:36:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:56,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:56,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425036719] [2022-07-22 17:36:56,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425036719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:56,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:56,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:36:56,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627737522] [2022-07-22 17:36:56,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:56,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:36:56,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:56,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:36:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:36:56,296 INFO L87 Difference]: Start difference. First operand 405 states and 511 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:56,544 INFO L93 Difference]: Finished difference Result 999 states and 1301 transitions. [2022-07-22 17:36:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 17:36:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-07-22 17:36:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:56,549 INFO L225 Difference]: With dead ends: 999 [2022-07-22 17:36:56,549 INFO L226 Difference]: Without dead ends: 601 [2022-07-22 17:36:56,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:36:56,552 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 131 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:56,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 177 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 17:36:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-07-22 17:36:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 413. [2022-07-22 17:36:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 316 states have (on average 1.2848101265822784) internal successors, (406), 341 states have internal predecessors, (406), 48 states have call successors, (48), 48 states have call predecessors, (48), 48 states have return successors, (65), 48 states have call predecessors, (65), 48 states have call successors, (65) [2022-07-22 17:36:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 519 transitions. [2022-07-22 17:36:56,599 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 519 transitions. Word has length 41 [2022-07-22 17:36:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:56,600 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 519 transitions. [2022-07-22 17:36:56,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 519 transitions. [2022-07-22 17:36:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 17:36:56,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:56,602 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, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:56,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:36:56,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -187402570, now seen corresponding path program 1 times [2022-07-22 17:36:56,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:56,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499193208] [2022-07-22 17:36:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:56,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:36:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:36:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:56,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:56,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499193208] [2022-07-22 17:36:56,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499193208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:56,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:56,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:36:56,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172511132] [2022-07-22 17:36:56,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:56,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:36:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:36:56,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:36:56,667 INFO L87 Difference]: Start difference. First operand 413 states and 519 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:56,840 INFO L93 Difference]: Finished difference Result 871 states and 1113 transitions. [2022-07-22 17:36:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:36:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-07-22 17:36:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:56,844 INFO L225 Difference]: With dead ends: 871 [2022-07-22 17:36:56,844 INFO L226 Difference]: Without dead ends: 465 [2022-07-22 17:36:56,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:36:56,846 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 81 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:56,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 194 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-22 17:36:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 425. [2022-07-22 17:36:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 328 states have (on average 1.274390243902439) internal successors, (418), 353 states have internal predecessors, (418), 48 states have call successors, (48), 48 states have call predecessors, (48), 48 states have return successors, (65), 48 states have call predecessors, (65), 48 states have call successors, (65) [2022-07-22 17:36:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 531 transitions. [2022-07-22 17:36:56,870 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 531 transitions. Word has length 41 [2022-07-22 17:36:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:56,871 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 531 transitions. [2022-07-22 17:36:56,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 531 transitions. [2022-07-22 17:36:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 17:36:56,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:56,877 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, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:56,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:36:56,878 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:56,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1092351666, now seen corresponding path program 1 times [2022-07-22 17:36:56,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:56,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232507115] [2022-07-22 17:36:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:56,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 17:36:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:36:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:36:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:36:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:36:56,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232507115] [2022-07-22 17:36:56,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232507115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:36:56,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:36:56,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 17:36:56,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914649762] [2022-07-22 17:36:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:36:56,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 17:36:56,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:36:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 17:36:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 17:36:56,920 INFO L87 Difference]: Start difference. First operand 425 states and 531 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:36:57,022 INFO L93 Difference]: Finished difference Result 1067 states and 1350 transitions. [2022-07-22 17:36:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:36:57,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-07-22 17:36:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:36:57,026 INFO L225 Difference]: With dead ends: 1067 [2022-07-22 17:36:57,026 INFO L226 Difference]: Without dead ends: 649 [2022-07-22 17:36:57,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:36:57,030 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 88 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 17:36:57,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 121 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 17:36:57,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-22 17:36:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 649. [2022-07-22 17:36:57,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 502 states have (on average 1.2430278884462151) internal successors, (624), 533 states have internal predecessors, (624), 76 states have call successors, (76), 76 states have call predecessors, (76), 70 states have return successors, (98), 70 states have call predecessors, (98), 76 states have call successors, (98) [2022-07-22 17:36:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 798 transitions. [2022-07-22 17:36:57,075 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 798 transitions. Word has length 41 [2022-07-22 17:36:57,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:36:57,075 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 798 transitions. [2022-07-22 17:36:57,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 17:36:57,076 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 798 transitions. [2022-07-22 17:36:57,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 17:36:57,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:36:57,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:57,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:36:57,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:36:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:36:57,078 INFO L85 PathProgramCache]: Analyzing trace with hash 958495308, now seen corresponding path program 1 times [2022-07-22 17:36:57,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:36:57,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269265699] [2022-07-22 17:36:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:36:57,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:36:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 17:36:57,105 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 17:36:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 17:36:57,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 17:36:57,148 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 17:36:57,149 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 17:36:57,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:36:57,153 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:36:57,157 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 17:36:57,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 05:36:57 BoogieIcfgContainer [2022-07-22 17:36:57,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 17:36:57,196 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 17:36:57,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 17:36:57,196 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 17:36:57,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:36:54" (3/4) ... [2022-07-22 17:36:57,199 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 17:36:57,264 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 17:36:57,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 17:36:57,266 INFO L158 Benchmark]: Toolchain (without parser) took 3743.47ms. Allocated memory was 88.1MB in the beginning and 153.1MB in the end (delta: 65.0MB). Free memory was 48.1MB in the beginning and 73.5MB in the end (delta: -25.3MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2022-07-22 17:36:57,266 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 17:36:57,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.44ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 47.9MB in the beginning and 93.0MB in the end (delta: -45.1MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-07-22 17:36:57,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.97ms. Allocated memory is still 123.7MB. Free memory was 93.0MB in the beginning and 90.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 17:36:57,268 INFO L158 Benchmark]: Boogie Preprocessor took 33.46ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 89.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 17:36:57,268 INFO L158 Benchmark]: RCFGBuilder took 456.97ms. Allocated memory is still 123.7MB. Free memory was 89.0MB in the beginning and 73.0MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-22 17:36:57,268 INFO L158 Benchmark]: TraceAbstraction took 2614.88ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 73.0MB in the beginning and 77.7MB in the end (delta: -4.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2022-07-22 17:36:57,269 INFO L158 Benchmark]: Witness Printer took 69.00ms. Allocated memory is still 153.1MB. Free memory was 77.7MB in the beginning and 73.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 17:36:57,271 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 88.1MB. Free memory is still 66.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.44ms. Allocated memory was 88.1MB in the beginning and 123.7MB in the end (delta: 35.7MB). Free memory was 47.9MB in the beginning and 93.0MB in the end (delta: -45.1MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.97ms. Allocated memory is still 123.7MB. Free memory was 93.0MB in the beginning and 90.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.46ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 89.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.97ms. Allocated memory is still 123.7MB. Free memory was 89.0MB in the beginning and 73.0MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2614.88ms. Allocated memory was 123.7MB in the beginning and 153.1MB in the end (delta: 29.4MB). Free memory was 73.0MB in the beginning and 77.7MB in the end (delta: -4.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * Witness Printer took 69.00ms. Allocated memory is still 153.1MB. Free memory was 77.7MB in the beginning and 73.5MB 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: 155]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L260] int pumpRunning = 0; [L261] int systemActive = 1; [L465] int cleanupTimeShifts = 4; [L730] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] int retValue_acc ; [L539] int tmp ; [L543] FCALL select_helpers() [L544] FCALL select_features() [L545] CALL, EXPR valid_product() [L456] int retValue_acc ; [L459] retValue_acc = 1 [L460] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L545] RET, EXPR valid_product() [L545] tmp = valid_product() [L547] COND TRUE \read(tmp) [L549] FCALL setup() [L550] CALL runTest() [L532] CALL test() [L191] int splverifierCounter ; [L192] int tmp ; [L193] int tmp___0 ; [L194] int tmp___1 ; [L195] int tmp___2 ; [L198] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L200] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L202] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L208] tmp = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L212] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L212] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L218] tmp___0 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L222] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L222] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L228] tmp___2 = __VERIFIER_nondet_int() [L230] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___2=-1, waterLevel=2] [L245] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L267] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L274] COND TRUE \read(systemActive) [L276] CALL processEnvironment() [L296] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L299] COND TRUE ! pumpRunning [L301] CALL, EXPR isHighWaterLevel() [L393] int retValue_acc ; [L394] int tmp ; [L395] int tmp___0 ; [L399] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L399] RET, EXPR isHighWaterSensorDry() [L399] tmp = isHighWaterSensorDry() [L401] COND FALSE !(\read(tmp)) [L404] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L406] retValue_acc = tmp___0 [L407] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L301] RET, EXPR isHighWaterLevel() [L301] tmp = isHighWaterLevel() [L303] COND TRUE \read(tmp) [L305] CALL activatePump() [L324] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L305] RET activatePump() [L276] RET processEnvironment() [L282] CALL __utac_acc__Specification1_spec__1() [L162] int tmp ; [L163] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L167] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L167] tmp = isMethaneLevelCritical() [L169] COND TRUE \read(tmp) [L171] CALL, EXPR isPumpRunning() [L348] int retValue_acc ; [L351] retValue_acc = pumpRunning [L352] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L171] RET, EXPR isPumpRunning() [L171] tmp___0 = isPumpRunning() [L173] COND TRUE \read(tmp___0) [L175] CALL __automaton_fail() [L155] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 685 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 669 mSDsluCounter, 1804 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1075 mSDsCounter, 107 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 795 IncrementalHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 107 mSolverCounterUnsat, 729 mSDtfsCounter, 795 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=649occurred in iteration=9, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 270 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 344 NumberOfCodeBlocks, 344 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 550 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-22 17:36:57,320 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