./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/minepump_spec4_product61.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 a5340faf3ec1f0e0bc66d280fc3b45c510e704ff1d108d74101ee8606e665888 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:16:19,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:16:19,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:16:19,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:16:19,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:16:19,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:16:19,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:16:19,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:16:19,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:16:19,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:16:19,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:16:19,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:16:19,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:16:19,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:16:19,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:16:19,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:16:19,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:16:19,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:16:19,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:16:19,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:16:19,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:16:19,817 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:16:19,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:16:19,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:16:19,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:16:19,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:16:19,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:16:19,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:16:19,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:16:19,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:16:19,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:16:19,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:16:19,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:16:19,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:16:19,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:16:19,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:16:19,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:16:19,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:16:19,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:16:19,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:16:19,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:16:19,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:16:19,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:16:19,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:16:19,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:16:19,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:16:19,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:16:19,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:16:19,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:16:19,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:16:19,853 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:16:19,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:16:19,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:16:19,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:16:19,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:16:19,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:16:19,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:16:19,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:16:19,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:16:19,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:16:19,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:16:19,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:16:19,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:16:19,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:16:19,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:16:19,857 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:16:19,857 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:16:19,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:16:19,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:16:19,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5340faf3ec1f0e0bc66d280fc3b45c510e704ff1d108d74101ee8606e665888 [2021-12-21 13:16:20,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:16:20,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:16:20,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:16:20,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:16:20,098 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:16:20,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c [2021-12-21 13:16:20,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba6af40/90f64df1cf6c4ac1a5118866eff94414/FLAG186e6ad67 [2021-12-21 13:16:20,543 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:16:20,546 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product61.cil.c [2021-12-21 13:16:20,562 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba6af40/90f64df1cf6c4ac1a5118866eff94414/FLAG186e6ad67 [2021-12-21 13:16:20,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba6af40/90f64df1cf6c4ac1a5118866eff94414 [2021-12-21 13:16:20,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:16:20,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:16:20,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:16:20,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:16:20,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:16:20,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:20,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cbb52b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20, skipping insertion in model container [2021-12-21 13:16:20,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:20,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:16:20,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:16:20,760 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_spec4_product61.cil.c[1605,1618] [2021-12-21 13:16:20,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:16:20,899 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:16:20,911 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_spec4_product61.cil.c[1605,1618] [2021-12-21 13:16:20,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:16:20,985 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:16:20,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20 WrapperNode [2021-12-21 13:16:20,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:16:20,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:16:20,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:16:20,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:16:20,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,034 INFO L137 Inliner]: procedures = 57, calls = 160, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 289 [2021-12-21 13:16:21,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:16:21,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:16:21,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:16:21,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:16:21,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:16:21,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:16:21,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:16:21,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:16:21,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (1/1) ... [2021-12-21 13:16:21,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:16:21,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:16:21,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 13:16:21,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 13:16:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:16:21,130 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-21 13:16:21,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-21 13:16:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-21 13:16:21,131 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-21 13:16:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-21 13:16:21,131 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-21 13:16:21,131 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-21 13:16:21,131 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-21 13:16:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-21 13:16:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-21 13:16:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-12-21 13:16:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-12-21 13:16:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-12-21 13:16:21,132 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-12-21 13:16:21,132 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-21 13:16:21,133 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-21 13:16:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:16:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-21 13:16:21,133 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-21 13:16:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:16:21,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:16:21,203 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:16:21,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:16:21,461 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:16:21,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:16:21,467 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 13:16:21,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:16:21 BoogieIcfgContainer [2021-12-21 13:16:21,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:16:21,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:16:21,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:16:21,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:16:21,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:16:20" (1/3) ... [2021-12-21 13:16:21,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53453983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:16:21, skipping insertion in model container [2021-12-21 13:16:21,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:16:20" (2/3) ... [2021-12-21 13:16:21,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53453983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:16:21, skipping insertion in model container [2021-12-21 13:16:21,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:16:21" (3/3) ... [2021-12-21 13:16:21,475 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product61.cil.c [2021-12-21 13:16:21,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:16:21,479 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 13:16:21,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:16:21,526 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 13:16:21,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 13:16:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 76 states have (on average 1.381578947368421) internal successors, (105), 86 states have internal predecessors, (105), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-21 13:16:21,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 13:16:21,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:21,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:21,556 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash 332135154, now seen corresponding path program 1 times [2021-12-21 13:16:21,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:21,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769004877] [2021-12-21 13:16:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:21,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:21,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:21,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769004877] [2021-12-21 13:16:21,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769004877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:21,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:21,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 13:16:21,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684870571] [2021-12-21 13:16:21,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 13:16:21,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 13:16:21,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 13:16:21,774 INFO L87 Difference]: Start difference. First operand has 103 states, 76 states have (on average 1.381578947368421) internal successors, (105), 86 states have internal predecessors, (105), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:16:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:21,817 INFO L93 Difference]: Finished difference Result 198 states and 269 transitions. [2021-12-21 13:16:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 13:16:21,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 13:16:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:21,826 INFO L225 Difference]: With dead ends: 198 [2021-12-21 13:16:21,826 INFO L226 Difference]: Without dead ends: 94 [2021-12-21 13:16:21,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 13:16:21,833 INFO L933 BasicCegarLoop]: 131 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, 131 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:21,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:16:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-21 13:16:21,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-21 13:16:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.318840579710145) internal successors, (91), 78 states have internal predecessors, (91), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-21 13:16:21,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2021-12-21 13:16:21,904 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 19 [2021-12-21 13:16:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:21,905 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2021-12-21 13:16:21,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:16:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2021-12-21 13:16:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 13:16:21,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:21,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:21,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:16:21,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:21,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2057254746, now seen corresponding path program 1 times [2021-12-21 13:16:21,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:21,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740774707] [2021-12-21 13:16:21,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:21,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:21,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:21,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740774707] [2021-12-21 13:16:21,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740774707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:21,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:21,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:16:21,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86365984] [2021-12-21 13:16:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:21,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:16:21,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:21,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:16:21,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:16:22,000 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:16:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:22,026 INFO L93 Difference]: Finished difference Result 154 states and 200 transitions. [2021-12-21 13:16:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:16:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-21 13:16:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:22,030 INFO L225 Difference]: With dead ends: 154 [2021-12-21 13:16:22,031 INFO L226 Difference]: Without dead ends: 85 [2021-12-21 13:16:22,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:16:22,033 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:22,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:16:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-21 13:16:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-21 13:16:22,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 72 states have internal predecessors, (84), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-21 13:16:22,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2021-12-21 13:16:22,047 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 20 [2021-12-21 13:16:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:22,048 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2021-12-21 13:16:22,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:16:22,048 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2021-12-21 13:16:22,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 13:16:22,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:22,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:22,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:16:22,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1387625524, now seen corresponding path program 1 times [2021-12-21 13:16:22,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:22,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512023146] [2021-12-21 13:16:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:22,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:22,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:22,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512023146] [2021-12-21 13:16:22,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512023146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:22,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:22,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 13:16:22,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163572915] [2021-12-21 13:16:22,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:22,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:16:22,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:16:22,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:16:22,123 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:16:22,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:22,137 INFO L93 Difference]: Finished difference Result 163 states and 214 transitions. [2021-12-21 13:16:22,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:16:22,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-21 13:16:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:22,141 INFO L225 Difference]: With dead ends: 163 [2021-12-21 13:16:22,142 INFO L226 Difference]: Without dead ends: 85 [2021-12-21 13:16:22,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:16:22,144 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 92 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:22,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 108 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:16:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-21 13:16:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-12-21 13:16:22,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 72 states have internal predecessors, (83), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-21 13:16:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2021-12-21 13:16:22,155 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 24 [2021-12-21 13:16:22,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:22,155 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2021-12-21 13:16:22,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:16:22,156 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2021-12-21 13:16:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 13:16:22,161 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:22,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:22,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:16:22,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 610675451, now seen corresponding path program 1 times [2021-12-21 13:16:22,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:22,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686594441] [2021-12-21 13:16:22,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:22,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:16:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 13:16:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:22,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:22,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686594441] [2021-12-21 13:16:22,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686594441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:22,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:22,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:16:22,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972469130] [2021-12-21 13:16:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:22,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 13:16:22,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:22,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 13:16:22,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 13:16:22,249 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 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) [2021-12-21 13:16:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:22,357 INFO L93 Difference]: Finished difference Result 238 states and 306 transitions. [2021-12-21 13:16:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:16:22,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 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 37 [2021-12-21 13:16:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:22,359 INFO L225 Difference]: With dead ends: 238 [2021-12-21 13:16:22,359 INFO L226 Difference]: Without dead ends: 160 [2021-12-21 13:16:22,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:16:22,360 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 153 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:22,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 200 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:16:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-21 13:16:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-12-21 13:16:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 117 states have (on average 1.2735042735042734) internal successors, (149), 126 states have internal predecessors, (149), 16 states have call successors, (16), 15 states have call predecessors, (16), 20 states have return successors, (27), 18 states have call predecessors, (27), 16 states have call successors, (27) [2021-12-21 13:16:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 192 transitions. [2021-12-21 13:16:22,373 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 192 transitions. Word has length 37 [2021-12-21 13:16:22,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:22,374 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 192 transitions. [2021-12-21 13:16:22,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 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) [2021-12-21 13:16:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 192 transitions. [2021-12-21 13:16:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 13:16:22,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:22,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:22,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:16:22,375 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:22,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1599675381, now seen corresponding path program 1 times [2021-12-21 13:16:22,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:22,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578099465] [2021-12-21 13:16:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:22,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:16:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:22,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:22,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578099465] [2021-12-21 13:16:22,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578099465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:22,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:22,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:16:22,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257867033] [2021-12-21 13:16:22,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:22,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:16:22,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:16:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:16:22,460 INFO L87 Difference]: Start difference. First operand 154 states and 192 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:16:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:22,869 INFO L93 Difference]: Finished difference Result 589 states and 788 transitions. [2021-12-21 13:16:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 13:16:22,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-12-21 13:16:22,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:22,873 INFO L225 Difference]: With dead ends: 589 [2021-12-21 13:16:22,873 INFO L226 Difference]: Without dead ends: 442 [2021-12-21 13:16:22,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-12-21 13:16:22,875 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 358 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:22,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 538 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:16:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-21 13:16:22,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 424. [2021-12-21 13:16:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 317 states have (on average 1.2460567823343849) internal successors, (395), 342 states have internal predecessors, (395), 46 states have call successors, (46), 43 states have call predecessors, (46), 60 states have return successors, (105), 54 states have call predecessors, (105), 46 states have call successors, (105) [2021-12-21 13:16:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 546 transitions. [2021-12-21 13:16:22,909 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 546 transitions. Word has length 45 [2021-12-21 13:16:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:22,909 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 546 transitions. [2021-12-21 13:16:22,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 13:16:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 546 transitions. [2021-12-21 13:16:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 13:16:22,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:22,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:22,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:16:22,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash 414561125, now seen corresponding path program 1 times [2021-12-21 13:16:22,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:22,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777441892] [2021-12-21 13:16:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:22,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 13:16:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:16:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:22,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:22,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777441892] [2021-12-21 13:16:22,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777441892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:22,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:22,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:16:22,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329598655] [2021-12-21 13:16:22,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:22,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:16:22,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:16:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:16:22,975 INFO L87 Difference]: Start difference. First operand 424 states and 546 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 13:16:23,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:23,272 INFO L93 Difference]: Finished difference Result 515 states and 667 transitions. [2021-12-21 13:16:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 13:16:23,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-12-21 13:16:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:23,284 INFO L225 Difference]: With dead ends: 515 [2021-12-21 13:16:23,284 INFO L226 Difference]: Without dead ends: 513 [2021-12-21 13:16:23,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-12-21 13:16:23,285 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 232 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:23,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 420 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:16:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-12-21 13:16:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 465. [2021-12-21 13:16:23,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 350 states have (on average 1.2314285714285715) internal successors, (431), 378 states have internal predecessors, (431), 50 states have call successors, (50), 43 states have call predecessors, (50), 64 states have return successors, (119), 59 states have call predecessors, (119), 50 states have call successors, (119) [2021-12-21 13:16:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 600 transitions. [2021-12-21 13:16:23,315 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 600 transitions. Word has length 49 [2021-12-21 13:16:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:23,315 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 600 transitions. [2021-12-21 13:16:23,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 13:16:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 600 transitions. [2021-12-21 13:16:23,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 13:16:23,317 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:23,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:23,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:16:23,317 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1510129521, now seen corresponding path program 1 times [2021-12-21 13:16:23,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:23,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387388839] [2021-12-21 13:16:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:23,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 13:16:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:16:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:23,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:23,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387388839] [2021-12-21 13:16:23,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387388839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:23,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:23,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:16:23,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414370140] [2021-12-21 13:16:23,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:23,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:16:23,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:16:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:16:23,380 INFO L87 Difference]: Start difference. First operand 465 states and 600 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 13:16:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:23,573 INFO L93 Difference]: Finished difference Result 971 states and 1329 transitions. [2021-12-21 13:16:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:16:23,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2021-12-21 13:16:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:23,576 INFO L225 Difference]: With dead ends: 971 [2021-12-21 13:16:23,576 INFO L226 Difference]: Without dead ends: 513 [2021-12-21 13:16:23,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:16:23,578 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 158 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:23,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 358 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:16:23,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-12-21 13:16:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 474. [2021-12-21 13:16:23,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 359 states have (on average 1.2256267409470751) internal successors, (440), 387 states have internal predecessors, (440), 50 states have call successors, (50), 43 states have call predecessors, (50), 64 states have return successors, (119), 59 states have call predecessors, (119), 50 states have call successors, (119) [2021-12-21 13:16:23,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 609 transitions. [2021-12-21 13:16:23,609 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 609 transitions. Word has length 55 [2021-12-21 13:16:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:23,610 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 609 transitions. [2021-12-21 13:16:23,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 13:16:23,610 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 609 transitions. [2021-12-21 13:16:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 13:16:23,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:23,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:23,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:16:23,614 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:23,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1644143027, now seen corresponding path program 1 times [2021-12-21 13:16:23,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:23,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186288202] [2021-12-21 13:16:23,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:23,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 13:16:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 13:16:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:23,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:23,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186288202] [2021-12-21 13:16:23,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186288202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:23,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:16:23,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:16:23,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289974724] [2021-12-21 13:16:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:23,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:16:23,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:16:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:16:23,684 INFO L87 Difference]: Start difference. First operand 474 states and 609 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-21 13:16:23,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:23,878 INFO L93 Difference]: Finished difference Result 942 states and 1257 transitions. [2021-12-21 13:16:23,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 13:16:23,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 55 [2021-12-21 13:16:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:23,881 INFO L225 Difference]: With dead ends: 942 [2021-12-21 13:16:23,881 INFO L226 Difference]: Without dead ends: 475 [2021-12-21 13:16:23,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:16:23,882 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 255 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:23,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 279 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:16:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-12-21 13:16:23,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 458. [2021-12-21 13:16:23,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 346 states have (on average 1.2196531791907514) internal successors, (422), 373 states have internal predecessors, (422), 50 states have call successors, (50), 42 states have call predecessors, (50), 61 states have return successors, (113), 57 states have call predecessors, (113), 50 states have call successors, (113) [2021-12-21 13:16:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 585 transitions. [2021-12-21 13:16:23,914 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 585 transitions. Word has length 55 [2021-12-21 13:16:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:23,915 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 585 transitions. [2021-12-21 13:16:23,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-21 13:16:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 585 transitions. [2021-12-21 13:16:23,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 13:16:23,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:23,917 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:23,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:16:23,917 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:23,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:23,917 INFO L85 PathProgramCache]: Analyzing trace with hash -493181504, now seen corresponding path program 1 times [2021-12-21 13:16:23,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:23,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505812489] [2021-12-21 13:16:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:23,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 13:16:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:16:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:16:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 13:16:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 13:16:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:16:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 13:16:24,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505812489] [2021-12-21 13:16:24,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505812489] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:16:24,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732954908] [2021-12-21 13:16:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:24,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:16:24,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:16:24,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:16:24,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 13:16:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:24,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 13:16:24,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:16:24,361 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:16:24,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 13:16:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 13:16:24,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732954908] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 13:16:24,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 13:16:24,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 11 [2021-12-21 13:16:24,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619275483] [2021-12-21 13:16:24,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 13:16:24,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:16:24,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:24,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:16:24,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:16:24,546 INFO L87 Difference]: Start difference. First operand 458 states and 585 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:16:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:25,139 INFO L93 Difference]: Finished difference Result 1035 states and 1398 transitions. [2021-12-21 13:16:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-21 13:16:25,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2021-12-21 13:16:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:25,143 INFO L225 Difference]: With dead ends: 1035 [2021-12-21 13:16:25,143 INFO L226 Difference]: Without dead ends: 584 [2021-12-21 13:16:25,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 220 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2021-12-21 13:16:25,145 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 462 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:25,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 704 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:16:25,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-12-21 13:16:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 515. [2021-12-21 13:16:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 388 states have (on average 1.2190721649484537) internal successors, (473), 416 states have internal predecessors, (473), 61 states have call successors, (61), 54 states have call predecessors, (61), 65 states have return successors, (136), 62 states have call predecessors, (136), 61 states have call successors, (136) [2021-12-21 13:16:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 670 transitions. [2021-12-21 13:16:25,165 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 670 transitions. Word has length 101 [2021-12-21 13:16:25,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:25,166 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 670 transitions. [2021-12-21 13:16:25,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 8 states have internal predecessors, (102), 3 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:16:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 670 transitions. [2021-12-21 13:16:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 13:16:25,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:25,168 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:25,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 13:16:25,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:16:25,388 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:25,389 INFO L85 PathProgramCache]: Analyzing trace with hash -879070667, now seen corresponding path program 2 times [2021-12-21 13:16:25,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:25,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378855350] [2021-12-21 13:16:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:25,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 13:16:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:16:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:16:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:16:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 13:16:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:16:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:16:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:16:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:16:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:16:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 49 proven. 23 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 13:16:25,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378855350] [2021-12-21 13:16:25,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378855350] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:16:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731836633] [2021-12-21 13:16:25,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 13:16:25,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:16:25,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:16:25,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:16:25,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 13:16:25,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 13:16:25,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 13:16:25,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 13:16:25,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:16:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 13:16:26,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:16:26,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731836633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:26,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:16:26,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 12 [2021-12-21 13:16:26,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012052369] [2021-12-21 13:16:26,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:26,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:16:26,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:26,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:16:26,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:16:26,144 INFO L87 Difference]: Start difference. First operand 515 states and 670 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:16:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:26,379 INFO L93 Difference]: Finished difference Result 1230 states and 1669 transitions. [2021-12-21 13:16:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 13:16:26,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 147 [2021-12-21 13:16:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:26,383 INFO L225 Difference]: With dead ends: 1230 [2021-12-21 13:16:26,383 INFO L226 Difference]: Without dead ends: 856 [2021-12-21 13:16:26,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 174 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-12-21 13:16:26,387 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 225 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:26,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 625 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:16:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-12-21 13:16:26,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 831. [2021-12-21 13:16:26,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 625 states have (on average 1.2112) internal successors, (757), 661 states have internal predecessors, (757), 96 states have call successors, (96), 90 states have call predecessors, (96), 109 states have return successors, (207), 102 states have call predecessors, (207), 96 states have call successors, (207) [2021-12-21 13:16:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1060 transitions. [2021-12-21 13:16:26,420 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1060 transitions. Word has length 147 [2021-12-21 13:16:26,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:26,421 INFO L470 AbstractCegarLoop]: Abstraction has 831 states and 1060 transitions. [2021-12-21 13:16:26,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 3 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 13:16:26,421 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1060 transitions. [2021-12-21 13:16:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-21 13:16:26,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:26,424 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:26,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 13:16:26,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 13:16:26,644 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1643986723, now seen corresponding path program 1 times [2021-12-21 13:16:26,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:26,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097412751] [2021-12-21 13:16:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:26,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 13:16:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:16:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 13:16:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 13:16:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:16:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:16:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 13:16:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 13:16:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:16:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,745 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-21 13:16:26,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:26,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097412751] [2021-12-21 13:16:26,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097412751] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:16:26,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820327457] [2021-12-21 13:16:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:26,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:16:26,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:16:26,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:16:26,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 13:16:26,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:26,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 13:16:26,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:16:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-21 13:16:27,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:16:27,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820327457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:27,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:16:27,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2021-12-21 13:16:27,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635627993] [2021-12-21 13:16:27,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:27,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:16:27,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:16:27,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-21 13:16:27,037 INFO L87 Difference]: Start difference. First operand 831 states and 1060 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-21 13:16:27,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:27,252 INFO L93 Difference]: Finished difference Result 1733 states and 2247 transitions. [2021-12-21 13:16:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 13:16:27,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 143 [2021-12-21 13:16:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:27,256 INFO L225 Difference]: With dead ends: 1733 [2021-12-21 13:16:27,256 INFO L226 Difference]: Without dead ends: 954 [2021-12-21 13:16:27,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-21 13:16:27,258 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 179 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:27,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 368 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 13:16:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-12-21 13:16:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 826. [2021-12-21 13:16:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 621 states have (on average 1.2077294685990339) internal successors, (750), 654 states have internal predecessors, (750), 96 states have call successors, (96), 90 states have call predecessors, (96), 108 states have return successors, (196), 101 states have call predecessors, (196), 96 states have call successors, (196) [2021-12-21 13:16:27,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1042 transitions. [2021-12-21 13:16:27,293 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1042 transitions. Word has length 143 [2021-12-21 13:16:27,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:27,293 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 1042 transitions. [2021-12-21 13:16:27,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-21 13:16:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1042 transitions. [2021-12-21 13:16:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-21 13:16:27,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:16:27,295 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:27,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 13:16:27,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:16:27,508 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 13:16:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:16:27,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2095224393, now seen corresponding path program 1 times [2021-12-21 13:16:27,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:16:27,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321808273] [2021-12-21 13:16:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:27,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:16:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-21 13:16:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 13:16:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 13:16:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 13:16:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 13:16:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-21 13:16:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-21 13:16:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:16:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 13:16:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 13:16:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-21 13:16:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 13:16:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 6 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-21 13:16:27,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:16:27,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321808273] [2021-12-21 13:16:27,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321808273] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 13:16:27,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371587747] [2021-12-21 13:16:27,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:16:27,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:16:27,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:16:27,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 13:16:27,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 13:16:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:16:27,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 13:16:27,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 13:16:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 13:16:27,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 13:16:27,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371587747] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:16:27,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 13:16:27,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 8 [2021-12-21 13:16:27,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176302777] [2021-12-21 13:16:27,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:16:27,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:16:27,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:16:27,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:16:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:16:27,868 INFO L87 Difference]: Start difference. First operand 826 states and 1042 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 13:16:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:16:27,905 INFO L93 Difference]: Finished difference Result 1128 states and 1412 transitions. [2021-12-21 13:16:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:16:27,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 147 [2021-12-21 13:16:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:16:27,906 INFO L225 Difference]: With dead ends: 1128 [2021-12-21 13:16:27,906 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 13:16:27,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-21 13:16:27,908 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 9 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:16:27,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 411 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:16:27,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 13:16:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 13:16:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:16:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 13:16:27,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 147 [2021-12-21 13:16:27,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:16:27,910 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 13:16:27,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 13:16:27,910 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 13:16:27,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 13:16:27,912 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 13:16:27,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 13:16:28,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 13:16:28,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 13:16:30,316 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 245 252) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0))) [2021-12-21 13:16:30,316 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 245 252) no Hoare annotation was computed. [2021-12-21 13:16:30,316 INFO L858 garLoopResultBuilder]: For program point deactivatePumpFINAL(lines 245 252) no Hoare annotation was computed. [2021-12-21 13:16:30,316 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 135 141) no Hoare annotation was computed. [2021-12-21 13:16:30,316 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 135 141) the Hoare annotation is: true [2021-12-21 13:16:30,316 INFO L858 garLoopResultBuilder]: For program point L447-1(lines 443 454) no Hoare annotation was computed. [2021-12-21 13:16:30,317 INFO L861 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 443 454) the Hoare annotation is: true [2021-12-21 13:16:30,317 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 443 454) no Hoare annotation was computed. [2021-12-21 13:16:30,317 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 913 942) no Hoare annotation was computed. [2021-12-21 13:16:30,317 INFO L858 garLoopResultBuilder]: For program point L927(lines 927 931) no Hoare annotation was computed. [2021-12-21 13:16:30,317 INFO L861 garLoopResultBuilder]: At program point L927-1(lines 927 931) the Hoare annotation is: true [2021-12-21 13:16:30,317 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 913 942) the Hoare annotation is: true [2021-12-21 13:16:30,317 INFO L858 garLoopResultBuilder]: For program point L924(line 924) no Hoare annotation was computed. [2021-12-21 13:16:30,318 INFO L861 garLoopResultBuilder]: At program point L923-2(lines 923 937) the Hoare annotation is: true [2021-12-21 13:16:30,318 INFO L861 garLoopResultBuilder]: At program point L919(line 919) the Hoare annotation is: true [2021-12-21 13:16:30,318 INFO L858 garLoopResultBuilder]: For program point L919-1(line 919) no Hoare annotation was computed. [2021-12-21 13:16:30,318 INFO L861 garLoopResultBuilder]: At program point L938(lines 913 942) the Hoare annotation is: true [2021-12-21 13:16:30,318 INFO L858 garLoopResultBuilder]: For program point L934(line 934) no Hoare annotation was computed. [2021-12-21 13:16:30,318 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 122 128) no Hoare annotation was computed. [2021-12-21 13:16:30,318 INFO L854 garLoopResultBuilder]: At program point L209(line 209) the Hoare annotation is: (let ((.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 ~waterLevel~0) (<= ~waterLevel~0 |old(~waterLevel~0)|)) .cse2) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| ~systemActive~0))))) [2021-12-21 13:16:30,319 INFO L854 garLoopResultBuilder]: At program point L205(line 205) the Hoare annotation is: (let ((.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 ~waterLevel~0) (<= ~waterLevel~0 |old(~waterLevel~0)|)) .cse2) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| ~systemActive~0))))) [2021-12-21 13:16:30,320 INFO L854 garLoopResultBuilder]: At program point L201(line 201) the Hoare annotation is: (let ((.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 ~waterLevel~0) (<= ~waterLevel~0 |old(~waterLevel~0)|)) .cse2) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| ~systemActive~0))))) [2021-12-21 13:16:30,320 INFO L858 garLoopResultBuilder]: For program point L201-1(line 201) no Hoare annotation was computed. [2021-12-21 13:16:30,320 INFO L858 garLoopResultBuilder]: For program point timeShiftFINAL(lines 111 134) no Hoare annotation was computed. [2021-12-21 13:16:30,321 INFO L854 garLoopResultBuilder]: At program point L214(line 214) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and .cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse1 (not (<= 1 |old(~waterLevel~0)|))) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0) (not (<= 2 |old(~waterLevel~0)|))))) [2021-12-21 13:16:30,321 INFO L854 garLoopResultBuilder]: At program point L214-1(lines 195 219) the Hoare annotation is: (let ((.cse3 (not (<= 2 |old(~waterLevel~0)|))) (.cse4 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (let ((.cse0 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or (and (<= 2 ~waterLevel~0) .cse0) (and .cse1 (<= 1 ~waterLevel~0) .cse0) .cse2 .cse3)) (or .cse4 .cse2 .cse5 .cse3) (or (not (<= |old(~waterLevel~0)| 1)) .cse4 (and .cse1 .cse5) .cse2 (not (<= 1 |old(~waterLevel~0)|))))) [2021-12-21 13:16:30,321 INFO L858 garLoopResultBuilder]: For program point L532(lines 532 538) no Hoare annotation was computed. [2021-12-21 13:16:30,321 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 114 133) no Hoare annotation was computed. [2021-12-21 13:16:30,321 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 541) no Hoare annotation was computed. [2021-12-21 13:16:30,322 INFO L854 garLoopResultBuilder]: At program point L528-1(lines 520 544) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (<= 1 |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1|)) (.cse3 (<= 1 |timeShift_getWaterLevel_#res#1|)) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 (and .cse1 .cse2 .cse3 (= ~waterLevel~0 ~systemActive~0)) .cse4 (not (= |old(~waterLevel~0)| ~systemActive~0))) (or .cse0 .cse4 (= |old(~waterLevel~0)| ~waterLevel~0) .cse5) (let ((.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or .cse4 (and .cse1 .cse2 (<= 1 ~waterLevel~0) .cse3 .cse6) (and (<= 2 ~waterLevel~0) .cse2 .cse3 .cse6) .cse5)))) [2021-12-21 13:16:30,322 INFO L858 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-12-21 13:16:30,322 INFO L854 garLoopResultBuilder]: At program point L269(lines 264 272) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (= |old(~waterLevel~0)| ~systemActive~0))))) [2021-12-21 13:16:30,323 INFO L854 garLoopResultBuilder]: At program point L492(lines 487 495) the Hoare annotation is: (let ((.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse5 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (<= 1 |timeShift_getWaterLevel_#res#1|)) (.cse6 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (let ((.cse2 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or .cse0 (and (<= 2 ~waterLevel~0) .cse1 .cse2) (and .cse3 (<= 1 ~waterLevel~0) .cse1 .cse2) .cse4)) (or .cse5 .cse0 .cse6 .cse4) (or (not (<= |old(~waterLevel~0)| 1)) .cse5 .cse0 (and .cse3 .cse1 .cse6) (not (<= 1 |old(~waterLevel~0)|))))) [2021-12-21 13:16:30,323 INFO L858 garLoopResultBuilder]: For program point L203(lines 203 211) no Hoare annotation was computed. [2021-12-21 13:16:30,323 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 216) no Hoare annotation was computed. [2021-12-21 13:16:30,323 INFO L854 garLoopResultBuilder]: At program point L55(lines 50 57) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (<= 2 |old(~waterLevel~0)|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (= |old(~waterLevel~0)| ~systemActive~0))))) [2021-12-21 13:16:30,323 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 111 134) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse0) .cse1 (not (<= 1 |old(~waterLevel~0)|))) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0) (not (<= 2 |old(~waterLevel~0)|))))) [2021-12-21 13:16:30,323 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 111 134) no Hoare annotation was computed. [2021-12-21 13:16:30,324 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2021-12-21 13:16:30,324 INFO L858 garLoopResultBuilder]: For program point L423(lines 423 427) no Hoare annotation was computed. [2021-12-21 13:16:30,324 INFO L854 garLoopResultBuilder]: At program point L423-2(lines 419 430) the Hoare annotation is: (let ((.cse2 (not (<= 2 |old(~waterLevel~0)|))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (<= 1 ~waterLevel~0) (<= ~waterLevel~0 |old(~waterLevel~0)|)) .cse2) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| ~systemActive~0))))) [2021-12-21 13:16:30,324 INFO L854 garLoopResultBuilder]: At program point L407(lines 360 408) the Hoare annotation is: false [2021-12-21 13:16:30,324 INFO L861 garLoopResultBuilder]: At program point L981(lines 974 983) the Hoare annotation is: true [2021-12-21 13:16:30,324 INFO L854 garLoopResultBuilder]: At program point L77(lines 73 79) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 ~systemActive~0)) [2021-12-21 13:16:30,324 INFO L858 garLoopResultBuilder]: For program point L362(lines 361 406) no Hoare annotation was computed. [2021-12-21 13:16:30,324 INFO L858 garLoopResultBuilder]: For program point L391(lines 391 402) no Hoare annotation was computed. [2021-12-21 13:16:30,324 INFO L858 garLoopResultBuilder]: For program point L994(lines 994 1001) no Hoare annotation was computed. [2021-12-21 13:16:30,325 INFO L858 garLoopResultBuilder]: For program point L994-2(lines 994 1001) no Hoare annotation was computed. [2021-12-21 13:16:30,325 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-21 13:16:30,325 INFO L854 garLoopResultBuilder]: At program point L383(line 383) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= 1 ~waterLevel~0)))) [2021-12-21 13:16:30,325 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-21 13:16:30,325 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-21 13:16:30,326 INFO L854 garLoopResultBuilder]: At program point L404(lines 361 406) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= 1 ~waterLevel~0)))) [2021-12-21 13:16:30,326 INFO L858 garLoopResultBuilder]: For program point L371(lines 371 377) no Hoare annotation was computed. [2021-12-21 13:16:30,326 INFO L858 garLoopResultBuilder]: For program point L371-1(lines 371 377) no Hoare annotation was computed. [2021-12-21 13:16:30,326 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 367) no Hoare annotation was computed. [2021-12-21 13:16:30,326 INFO L861 garLoopResultBuilder]: At program point L1003(lines 984 1006) the Hoare annotation is: true [2021-12-21 13:16:30,327 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-21 13:16:30,327 INFO L858 garLoopResultBuilder]: For program point L397(lines 397 401) no Hoare annotation was computed. [2021-12-21 13:16:30,327 INFO L854 garLoopResultBuilder]: At program point L971(lines 967 973) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 ~systemActive~0)) [2021-12-21 13:16:30,327 INFO L854 garLoopResultBuilder]: At program point L397-2(lines 391 402) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= 1 ~waterLevel~0)))) [2021-12-21 13:16:30,327 INFO L858 garLoopResultBuilder]: For program point L381(lines 381 387) no Hoare annotation was computed. [2021-12-21 13:16:30,327 INFO L854 garLoopResultBuilder]: At program point L92(lines 87 95) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 ~systemActive~0)) [2021-12-21 13:16:30,327 INFO L858 garLoopResultBuilder]: For program point L381-1(lines 381 387) no Hoare annotation was computed. [2021-12-21 13:16:30,327 INFO L861 garLoopResultBuilder]: At program point L410(lines 351 414) the Hoare annotation is: true [2021-12-21 13:16:30,328 INFO L854 garLoopResultBuilder]: At program point L373(line 373) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (<= 1 ~waterLevel~0)))) [2021-12-21 13:16:30,328 INFO L854 garLoopResultBuilder]: At program point L84(lines 80 86) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 ~systemActive~0)) [2021-12-21 13:16:30,329 INFO L854 garLoopResultBuilder]: At program point L225(lines 220 227) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 ~waterLevel~0)) (not (= ~waterLevel~0 ~systemActive~0)) (not (<= ~waterLevel~0 1))) [2021-12-21 13:16:30,329 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 143 167) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0))) (and (or .cse0 .cse1 (not (= 1 ~systemActive~0)) (not (<= 2 ~waterLevel~0))) (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (= ~waterLevel~0 ~systemActive~0)) (not (<= ~waterLevel~0 1))))) [2021-12-21 13:16:30,329 INFO L858 garLoopResultBuilder]: For program point L318(lines 318 322) no Hoare annotation was computed. [2021-12-21 13:16:30,329 INFO L854 garLoopResultBuilder]: At program point L157(line 157) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |processEnvironment__wrappee__highWaterSensor_~tmp~0#1| 0))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 1 ~systemActive~0)) (and .cse0 (<= 2 ~waterLevel~0) .cse1) (not (<= 1 ~waterLevel~0)) (and (<= 1 |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1|) .cse0 .cse1 (<= 1 |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp~4#1|)))) [2021-12-21 13:16:30,330 INFO L858 garLoopResultBuilder]: For program point L318-2(lines 318 322) no Hoare annotation was computed. [2021-12-21 13:16:30,330 INFO L858 garLoopResultBuilder]: For program point L151(lines 151 159) no Hoare annotation was computed. [2021-12-21 13:16:30,331 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 506) no Hoare annotation was computed. [2021-12-21 13:16:30,331 INFO L858 garLoopResultBuilder]: For program point L147(lines 147 164) no Hoare annotation was computed. [2021-12-21 13:16:30,331 INFO L854 garLoopResultBuilder]: At program point L162(line 162) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0))) [2021-12-21 13:16:30,331 INFO L858 garLoopResultBuilder]: For program point L162-1(lines 143 167) no Hoare annotation was computed. [2021-12-21 13:16:30,331 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 143 167) no Hoare annotation was computed. [2021-12-21 13:16:30,331 INFO L854 garLoopResultBuilder]: At program point L505(lines 496 509) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (<= 1 ~waterLevel~0)) (not (<= ~waterLevel~0 1)) (and (<= 1 |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1|) .cse2)) (or .cse0 .cse2 .cse1 (not (<= 2 ~waterLevel~0))))) [2021-12-21 13:16:30,331 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 241) no Hoare annotation was computed. [2021-12-21 13:16:30,332 INFO L854 garLoopResultBuilder]: At program point L233(line 233) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (= ~pumpRunning~0 0) (not (= 1 ~systemActive~0)) (not (<= 2 ~waterLevel~0))) (or .cse0 (not (<= 1 ~waterLevel~0)) (not (= ~waterLevel~0 ~systemActive~0)) (not (<= ~waterLevel~0 1))))) [2021-12-21 13:16:30,332 INFO L854 garLoopResultBuilder]: At program point L235-2(lines 228 244) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (<= 1 ~waterLevel~0)) (not (= ~waterLevel~0 ~systemActive~0)) (not (<= ~waterLevel~0 1))) [2021-12-21 13:16:30,332 INFO L858 garLoopResultBuilder]: For program point L233-1(line 233) no Hoare annotation was computed. [2021-12-21 13:16:30,332 INFO L854 garLoopResultBuilder]: At program point L324(lines 309 327) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0)) (and .cse0 (<= 2 ~waterLevel~0)) (and (<= 1 |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1|) .cse0 (<= 1 |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp~4#1|) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1| 0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_~tmp___0~0#1| 0)))) [2021-12-21 13:16:30,332 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 431 442) no Hoare annotation was computed. [2021-12-21 13:16:30,332 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 431 442) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (<= |old(~waterLevel~0)| 1)) (not (= ~pumpRunning~0 0)) .cse0 (not (<= 1 |old(~waterLevel~0)|)) (= ~waterLevel~0 ~systemActive~0)) (or .cse0 (= |old(~waterLevel~0)| ~waterLevel~0) (not (<= 2 |old(~waterLevel~0)|))))) [2021-12-21 13:16:30,332 INFO L858 garLoopResultBuilder]: For program point L435-1(lines 431 442) no Hoare annotation was computed. [2021-12-21 13:16:30,332 INFO L854 garLoopResultBuilder]: At program point L188(line 188) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0))) [2021-12-21 13:16:30,332 INFO L858 garLoopResultBuilder]: For program point L188-1(lines 169 193) no Hoare annotation was computed. [2021-12-21 13:16:30,333 INFO L854 garLoopResultBuilder]: At program point L343(lines 328 346) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 1 ~waterLevel~0)))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |processEnvironment__wrappee__methaneQuery_isLowWaterLevel_~tmp~5#1| 0) (<= 1 |processEnvironment__wrappee__methaneQuery_isLowWaterLevel_#res#1|) (= |processEnvironment__wrappee__methaneQuery_isLowWaterSensorDry_#res#1| 0) (<= 1 |processEnvironment__wrappee__methaneQuery_isLowWaterLevel_~tmp___0~1#1|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2021-12-21 13:16:30,333 INFO L858 garLoopResultBuilder]: For program point L337(lines 337 341) no Hoare annotation was computed. [2021-12-21 13:16:30,333 INFO L858 garLoopResultBuilder]: For program point L337-2(lines 337 341) no Hoare annotation was computed. [2021-12-21 13:16:30,333 INFO L854 garLoopResultBuilder]: At program point L515(lines 510 518) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 1 ~waterLevel~0)))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |processEnvironment__wrappee__methaneQuery_isLowWaterSensorDry_#res#1| 0))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2021-12-21 13:16:30,333 INFO L854 garLoopResultBuilder]: At program point L183(line 183) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0))) [2021-12-21 13:16:30,333 INFO L854 garLoopResultBuilder]: At program point L179(line 179) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (<= 1 ~waterLevel~0)))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |processEnvironment__wrappee__methaneQuery_isLowWaterLevel_~tmp~5#1| 0) (<= 1 |processEnvironment__wrappee__methaneQuery_isLowWaterLevel_#res#1|) (= |processEnvironment__wrappee__methaneQuery_isLowWaterSensorDry_#res#1| 0) (<= 1 |processEnvironment__wrappee__methaneQuery_isLowWaterLevel_~tmp___0~1#1|) (<= 1 |processEnvironment__wrappee__methaneQuery_~tmp~1#1|))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 .cse1))) [2021-12-21 13:16:30,334 INFO L858 garLoopResultBuilder]: For program point L177(lines 177 185) no Hoare annotation was computed. [2021-12-21 13:16:30,334 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 169 193) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0)) (not (<= 1 ~waterLevel~0))) [2021-12-21 13:16:30,334 INFO L858 garLoopResultBuilder]: For program point L173(lines 173 190) no Hoare annotation was computed. [2021-12-21 13:16:30,334 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 169 193) no Hoare annotation was computed. [2021-12-21 13:16:30,334 INFO L861 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 253 263) the Hoare annotation is: true [2021-12-21 13:16:30,334 INFO L861 garLoopResultBuilder]: At program point L460(lines 455 463) the Hoare annotation is: true [2021-12-21 13:16:30,334 INFO L858 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 253 263) no Hoare annotation was computed. [2021-12-21 13:16:30,334 INFO L858 garLoopResultBuilder]: For program point isMethaneAlarmFINAL(lines 253 263) no Hoare annotation was computed. [2021-12-21 13:16:30,337 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:16:30,338 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 13:16:30,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 01:16:30 BoogieIcfgContainer [2021-12-21 13:16:30,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 13:16:30,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 13:16:30,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 13:16:30,373 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 13:16:30,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:16:21" (3/4) ... [2021-12-21 13:16:30,375 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 13:16:30,380 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-12-21 13:16:30,380 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-12-21 13:16:30,380 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-12-21 13:16:30,380 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-12-21 13:16:30,381 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-12-21 13:16:30,381 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-12-21 13:16:30,381 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-12-21 13:16:30,381 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2021-12-21 13:16:30,381 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2021-12-21 13:16:30,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 54 nodes and edges [2021-12-21 13:16:30,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-12-21 13:16:30,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-21 13:16:30,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-21 13:16:30,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 13:16:30,387 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 13:16:30,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 13:16:30,401 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 <= \old(waterLevel))) && ((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && 1 <= waterLevel) && waterLevel <= \old(waterLevel))) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) [2021-12-21 13:16:30,402 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || ((pumpRunning == 0 && 1 <= waterLevel) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) [2021-12-21 13:16:30,402 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(1 == systemActive) || ((2 <= waterLevel && 1 <= \result) && waterLevel <= \old(waterLevel))) || (((pumpRunning == 0 && 1 <= waterLevel) && 1 <= \result) && waterLevel <= \old(waterLevel))) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && 1 <= \result) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) [2021-12-21 13:16:30,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || (((pumpRunning == 0 && 1 <= tmp) && 1 <= \result) && waterLevel == systemActive)) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && (((!(1 == systemActive) || ((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && 1 <= \result) && waterLevel <= \old(waterLevel))) || (((2 <= waterLevel && 1 <= tmp) && 1 <= \result) && waterLevel <= \old(waterLevel))) || !(2 <= \old(waterLevel))) [2021-12-21 13:16:30,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || !(1 <= waterLevel)) || (pumpRunning == \old(pumpRunning) && \result == 0)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) [2021-12-21 13:16:30,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) [2021-12-21 13:16:30,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel == systemActive)) || !(waterLevel <= 1) [2021-12-21 13:16:30,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || (1 <= \result && pumpRunning == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 <= waterLevel)) [2021-12-21 13:16:30,403 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel == systemActive)) || !(waterLevel <= 1) [2021-12-21 13:16:30,404 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || !(1 <= waterLevel)) || ((((pumpRunning == \old(pumpRunning) && tmp == 0) && 1 <= \result) && \result == 0) && 1 <= tmp___0)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) [2021-12-21 13:16:30,404 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) [2021-12-21 13:16:30,404 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) || (pumpRunning == 0 && 2 <= waterLevel)) || ((((1 <= \result && pumpRunning == 0) && 1 <= tmp) && \result == 0) && tmp___0 == 0) [2021-12-21 13:16:30,424 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 13:16:30,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 13:16:30,425 INFO L158 Benchmark]: Toolchain (without parser) took 9849.71ms. Allocated memory was 153.1MB in the beginning and 281.0MB in the end (delta: 127.9MB). Free memory was 123.8MB in the beginning and 235.6MB in the end (delta: -111.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-12-21 13:16:30,425 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 54.1MB in the beginning and 54.0MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 13:16:30,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.16ms. Allocated memory is still 153.1MB. Free memory was 123.3MB in the beginning and 119.0MB in the end (delta: 4.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-21 13:16:30,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.71ms. Allocated memory is still 153.1MB. Free memory was 119.0MB in the beginning and 116.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 13:16:30,426 INFO L158 Benchmark]: Boogie Preprocessor took 37.09ms. Allocated memory is still 153.1MB. Free memory was 116.4MB in the beginning and 114.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 13:16:30,426 INFO L158 Benchmark]: RCFGBuilder took 393.77ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 97.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 13:16:30,426 INFO L158 Benchmark]: TraceAbstraction took 8902.41ms. Allocated memory was 153.1MB in the beginning and 281.0MB in the end (delta: 127.9MB). Free memory was 96.5MB in the beginning and 242.9MB in the end (delta: -146.4MB). Peak memory consumption was 134.1MB. Max. memory is 16.1GB. [2021-12-21 13:16:30,427 INFO L158 Benchmark]: Witness Printer took 52.30ms. Allocated memory is still 281.0MB. Free memory was 242.9MB in the beginning and 235.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-21 13:16:30,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory was 54.1MB in the beginning and 54.0MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.16ms. Allocated memory is still 153.1MB. Free memory was 123.3MB in the beginning and 119.0MB in the end (delta: 4.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.71ms. Allocated memory is still 153.1MB. Free memory was 119.0MB in the beginning and 116.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.09ms. Allocated memory is still 153.1MB. Free memory was 116.4MB in the beginning and 114.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 393.77ms. Allocated memory is still 153.1MB. Free memory was 114.3MB in the beginning and 97.0MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8902.41ms. Allocated memory was 153.1MB in the beginning and 281.0MB in the end (delta: 127.9MB). Free memory was 96.5MB in the beginning and 242.9MB in the end (delta: -146.4MB). Peak memory consumption was 134.1MB. Max. memory is 16.1GB. * Witness Printer took 52.30ms. Allocated memory is still 281.0MB. Free memory was 242.9MB in the beginning and 235.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 103 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2174 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2135 mSDsluCounter, 4344 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2896 mSDsCounter, 726 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2546 IncrementalHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 726 mSolverCounterUnsat, 1448 mSDtfsCounter, 2546 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 931 GetRequests, 793 SyntacticMatches, 10 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=831occurred in iteration=10, InterpolantAutomatonStates: 121, 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, 12 MinimizatonAttempts, 350 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 48 LocationsWithAnnotation, 2039 PreInvPairs, 2159 NumberOfFragments, 1101 HoareAnnotationTreeSize, 2039 FomulaSimplifications, 4753 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 48 FomulaSimplificationsInter, 11618 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1380 NumberOfCodeBlocks, 1380 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1464 ConstructedInterpolants, 0 QuantifiedInterpolants, 2639 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2267 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 621/696 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: (pumpRunning == 0 && 1 == systemActive) && waterLevel == systemActive - InvariantResult [Line: 195]: Loop Invariant Derived loop invariant: (((((2 <= waterLevel && waterLevel <= \old(waterLevel)) || ((pumpRunning == 0 && 1 <= waterLevel) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || (pumpRunning == 0 && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || !(1 <= \old(waterLevel))) - InvariantResult [Line: 984]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 328]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || !(1 <= waterLevel)) || ((((pumpRunning == \old(pumpRunning) && tmp == 0) && 1 <= \result) && \result == 0) && 1 <= tmp___0)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) - InvariantResult [Line: 913]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 419]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(2 <= \old(waterLevel))) && ((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && 1 <= waterLevel) && waterLevel <= \old(waterLevel))) || !(2 <= \old(waterLevel)))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) - InvariantResult [Line: 496]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) || !(waterLevel <= 1)) || (1 <= \result && pumpRunning == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 <= waterLevel)) - InvariantResult [Line: 455]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 309]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) || (pumpRunning == 0 && 2 <= waterLevel)) || ((((1 <= \result && pumpRunning == 0) && 1 <= tmp) && \result == 0) && tmp___0 == 0) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel == systemActive)) || !(waterLevel <= 1) - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: (pumpRunning == 0 && 1 == systemActive) && waterLevel == systemActive - InvariantResult [Line: 967]: Loop Invariant Derived loop invariant: (pumpRunning == 0 && 1 == systemActive) && waterLevel == systemActive - InvariantResult [Line: 974]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 520]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || (((pumpRunning == 0 && 1 <= tmp) && 1 <= \result) && waterLevel == systemActive)) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && (((!(1 == systemActive) || ((((pumpRunning == 0 && 1 <= tmp) && 1 <= waterLevel) && 1 <= \result) && waterLevel <= \old(waterLevel))) || (((2 <= waterLevel && 1 <= tmp) && 1 <= \result) && waterLevel <= \old(waterLevel))) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 87]: Loop Invariant Derived loop invariant: (pumpRunning == 0 && 1 == systemActive) && waterLevel == systemActive - InvariantResult [Line: 487]: Loop Invariant Derived loop invariant: ((((!(1 == systemActive) || ((2 <= waterLevel && 1 <= \result) && waterLevel <= \old(waterLevel))) || (((pumpRunning == 0 && 1 <= waterLevel) && 1 <= \result) && waterLevel <= \old(waterLevel))) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && ((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && 1 <= \result) && \old(waterLevel) == waterLevel)) || !(1 <= \old(waterLevel))) - InvariantResult [Line: 264]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || !(2 <= \old(waterLevel))) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == systemActive)) - InvariantResult [Line: 360]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 351]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 228]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || !(1 <= waterLevel)) || !(waterLevel == systemActive)) || !(waterLevel <= 1) - InvariantResult [Line: 361]: Loop Invariant Derived loop invariant: ((2 <= waterLevel && 1 == systemActive) && splverifierCounter == 0) || (((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && 1 <= waterLevel) - InvariantResult [Line: 510]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || !(1 <= waterLevel)) || (pumpRunning == \old(pumpRunning) && \result == 0)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(1 <= waterLevel)) - InvariantResult [Line: 923]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-21 13:16:30,483 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 Result: TRUE