./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa --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 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:59:56,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:59:56,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:59:56,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:59:56,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:59:56,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:59:56,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:59:56,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:59:56,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:59:56,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:59:56,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:59:56,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:59:56,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:59:56,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:59:56,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:59:56,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:59:56,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:59:56,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:59:56,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:59:56,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:59:56,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:59:56,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:59:56,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:59:56,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:59:56,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:59:56,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:59:56,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:59:56,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:59:56,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:59:56,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:59:56,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:59:56,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:59:56,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:59:56,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:59:56,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:59:56,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:59:56,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:59:56,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:59:56,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:59:56,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:59:56,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:59:56,773 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:59:56,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:59:56,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:59:56,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:59:56,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:59:56,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:59:56,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:59:56,795 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:59:56,795 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:59:56,795 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:59:56,795 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:59:56,795 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:59:56,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:59:56,796 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:59:56,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:59:56,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:59:56,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:59:56,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:59:56,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:59:56,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:59:56,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:59:56,798 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:59:56,798 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:59:56,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:59:56,798 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:59:56,798 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:59:56,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:59:56,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:59:56,798 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77b56c936ee2ca54668f40aefbb58be12afe7e576f3b6d14c65eab965872c215 [2021-12-06 22:59:56,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:59:56,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:59:56,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:59:56,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:59:56,992 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:59:56,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-12-06 22:59:57,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/data/14c5754d2/3afdd7f2f794450496b5c5a9e240e5c4/FLAG8def37a59 [2021-12-06 22:59:57,428 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:59:57,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2021-12-06 22:59:57,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/data/14c5754d2/3afdd7f2f794450496b5c5a9e240e5c4/FLAG8def37a59 [2021-12-06 22:59:57,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/data/14c5754d2/3afdd7f2f794450496b5c5a9e240e5c4 [2021-12-06 22:59:57,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:59:57,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:59:57,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:59:57,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:59:57,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:59:57,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5bfd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57, skipping insertion in model container [2021-12-06 22:59:57,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:59:57,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:59:57,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2021-12-06 22:59:57,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:59:57,699 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:59:57,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c[5400,5413] [2021-12-06 22:59:57,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:59:57,761 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:59:57,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57 WrapperNode [2021-12-06 22:59:57,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:59:57,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:59:57,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:59:57,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:59:57,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,808 INFO L137 Inliner]: procedures = 55, calls = 156, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 257 [2021-12-06 22:59:57,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:59:57,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:59:57,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:59:57,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:59:57,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:59:57,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:59:57,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:59:57,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:59:57,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (1/1) ... [2021-12-06 22:59:57,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:59:57,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:57,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:59:57,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:59:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:59:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-12-06 22:59:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-12-06 22:59:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 22:59:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 22:59:57,895 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 22:59:57,895 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 22:59:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-12-06 22:59:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-12-06 22:59:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-12-06 22:59:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-12-06 22:59:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-12-06 22:59:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-12-06 22:59:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:59:57,896 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-12-06 22:59:57,896 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-12-06 22:59:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:59:57,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:59:57,950 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:59:57,952 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:59:58,179 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:59:58,186 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:59:58,187 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 22:59:58,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:59:58 BoogieIcfgContainer [2021-12-06 22:59:58,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:59:58,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:59:58,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:59:58,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:59:58,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:59:57" (1/3) ... [2021-12-06 22:59:58,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152df137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:59:58, skipping insertion in model container [2021-12-06 22:59:58,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:59:57" (2/3) ... [2021-12-06 22:59:58,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152df137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:59:58, skipping insertion in model container [2021-12-06 22:59:58,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:59:58" (3/3) ... [2021-12-06 22:59:58,197 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2021-12-06 22:59:58,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:59:58,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:59:58,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:59:58,246 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 [2021-12-06 22:59:58,246 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:59:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-06 22:59:58,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:59:58,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:58,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:58,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:58,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:58,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1180075740, now seen corresponding path program 1 times [2021-12-06 22:59:58,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:58,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83020929] [2021-12-06 22:59:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:58,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:58,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:58,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83020929] [2021-12-06 22:59:58,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83020929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:58,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:58,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:59:58,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871115048] [2021-12-06 22:59:58,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:58,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:59:58,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:59:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:59:58,472 INFO L87 Difference]: Start difference. First operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 76 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) 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) [2021-12-06 22:59:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:58,496 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2021-12-06 22:59:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:59:58,498 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 [2021-12-06 22:59:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:58,505 INFO L225 Difference]: With dead ends: 168 [2021-12-06 22:59:58,505 INFO L226 Difference]: Without dead ends: 79 [2021-12-06 22:59:58,508 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 [2021-12-06 22:59:58,510 INFO L933 BasicCegarLoop]: 111 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, 111 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 [2021-12-06 22:59:58,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-06 22:59:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-12-06 22:59:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 68 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 22:59:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2021-12-06 22:59:58,542 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 19 [2021-12-06 22:59:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:58,543 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2021-12-06 22:59:58,543 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) [2021-12-06 22:59:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2021-12-06 22:59:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 22:59:58,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:58,545 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] [2021-12-06 22:59:58,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:59:58,545 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:58,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:58,546 INFO L85 PathProgramCache]: Analyzing trace with hash 595736866, now seen corresponding path program 1 times [2021-12-06 22:59:58,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:58,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098276689] [2021-12-06 22:59:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:58,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:58,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:58,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:58,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098276689] [2021-12-06 22:59:58,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098276689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:58,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:58,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:59:58,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821613096] [2021-12-06 22:59:58,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:58,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:59:58,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:59:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:59:58,597 INFO L87 Difference]: Start difference. First operand 79 states and 102 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) [2021-12-06 22:59:58,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:58,610 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2021-12-06 22:59:58,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:59:58,610 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 [2021-12-06 22:59:58,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:58,611 INFO L225 Difference]: With dead ends: 119 [2021-12-06 22:59:58,611 INFO L226 Difference]: Without dead ends: 70 [2021-12-06 22:59:58,612 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 [2021-12-06 22:59:58,613 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 156 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 [2021-12-06 22:59:58,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-06 22:59:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-12-06 22:59:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 62 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 6 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 22:59:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-12-06 22:59:58,622 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 20 [2021-12-06 22:59:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:58,622 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-12-06 22:59:58,622 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) [2021-12-06 22:59:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-12-06 22:59:58,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:59:58,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:58,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:58,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:59:58,624 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:58,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash 369626779, now seen corresponding path program 1 times [2021-12-06 22:59:58,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:58,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398518931] [2021-12-06 22:59:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:58,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:58,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:58,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398518931] [2021-12-06 22:59:58,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398518931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:58,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:58,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:59:58,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166934193] [2021-12-06 22:59:58,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:58,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:59:58,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:58,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:59:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:59:58,672 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-12-06 22:59:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:58,705 INFO L93 Difference]: Finished difference Result 194 states and 255 transitions. [2021-12-06 22:59:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:59:58,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 25 [2021-12-06 22:59:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:58,707 INFO L225 Difference]: With dead ends: 194 [2021-12-06 22:59:58,707 INFO L226 Difference]: Without dead ends: 131 [2021-12-06 22:59:58,708 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 [2021-12-06 22:59:58,709 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 82 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:58,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 186 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-12-06 22:59:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-12-06 22:59:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 97 states have (on average 1.3608247422680413) internal successors, (132), 112 states have internal predecessors, (132), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (18), 11 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-06 22:59:58,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 168 transitions. [2021-12-06 22:59:58,726 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 168 transitions. Word has length 25 [2021-12-06 22:59:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:58,726 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 168 transitions. [2021-12-06 22:59:58,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-12-06 22:59:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 168 transitions. [2021-12-06 22:59:58,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 22:59:58,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:58,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:58,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:59:58,729 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:58,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:58,730 INFO L85 PathProgramCache]: Analyzing trace with hash 779702988, now seen corresponding path program 1 times [2021-12-06 22:59:58,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:58,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694908076] [2021-12-06 22:59:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:58,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:58,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:58,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:58,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694908076] [2021-12-06 22:59:58,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694908076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:58,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:58,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:59:58,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751458050] [2021-12-06 22:59:58,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:58,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:59:58,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:58,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:59:58,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:59:58,801 INFO L87 Difference]: Start difference. First operand 128 states and 168 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-06 22:59:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:58,856 INFO L93 Difference]: Finished difference Result 358 states and 489 transitions. [2021-12-06 22:59:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:59:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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 28 [2021-12-06 22:59:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:58,859 INFO L225 Difference]: With dead ends: 358 [2021-12-06 22:59:58,859 INFO L226 Difference]: Without dead ends: 237 [2021-12-06 22:59:58,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:58,861 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:58,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 357 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:58,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-06 22:59:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-12-06 22:59:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 178 states have (on average 1.3370786516853932) internal successors, (238), 205 states have internal predecessors, (238), 36 states have call successors, (36), 24 states have call predecessors, (36), 22 states have return successors, (38), 20 states have call predecessors, (38), 36 states have call successors, (38) [2021-12-06 22:59:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 312 transitions. [2021-12-06 22:59:58,897 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 312 transitions. Word has length 28 [2021-12-06 22:59:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:58,898 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 312 transitions. [2021-12-06 22:59:58,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-12-06 22:59:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 312 transitions. [2021-12-06 22:59:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 22:59:58,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:58,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:58,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:59:58,902 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:58,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:58,903 INFO L85 PathProgramCache]: Analyzing trace with hash -926135279, now seen corresponding path program 1 times [2021-12-06 22:59:58,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:58,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570039380] [2021-12-06 22:59:58,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:58,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:58,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:58,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:58,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570039380] [2021-12-06 22:59:58,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570039380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:58,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:58,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:59:58,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319378378] [2021-12-06 22:59:58,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:58,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:59:58,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:58,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:59:58,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:59:58,957 INFO L87 Difference]: Start difference. First operand 237 states and 312 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-12-06 22:59:58,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:58,995 INFO L93 Difference]: Finished difference Result 587 states and 795 transitions. [2021-12-06 22:59:58,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:59:58,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 30 [2021-12-06 22:59:58,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:58,999 INFO L225 Difference]: With dead ends: 587 [2021-12-06 22:59:58,999 INFO L226 Difference]: Without dead ends: 357 [2021-12-06 22:59:59,001 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 [2021-12-06 22:59:59,002 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 52 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:59,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 150 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:59:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-12-06 22:59:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 348. [2021-12-06 22:59:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 269 states have (on average 1.2973977695167287) internal successors, (349), 289 states have internal predecessors, (349), 41 states have call successors, (41), 39 states have call predecessors, (41), 37 states have return successors, (59), 36 states have call predecessors, (59), 41 states have call successors, (59) [2021-12-06 22:59:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 449 transitions. [2021-12-06 22:59:59,035 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 449 transitions. Word has length 30 [2021-12-06 22:59:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:59,036 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 449 transitions. [2021-12-06 22:59:59,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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) [2021-12-06 22:59:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 449 transitions. [2021-12-06 22:59:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 22:59:59,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:59,038 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] [2021-12-06 22:59:59,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:59:59,038 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:59,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1951241998, now seen corresponding path program 1 times [2021-12-06 22:59:59,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:59,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623706580] [2021-12-06 22:59:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:59,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:59:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:59,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:59,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623706580] [2021-12-06 22:59:59,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623706580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:59,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:59,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:59:59,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247071655] [2021-12-06 22:59:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:59,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:59,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:59,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:59,100 INFO L87 Difference]: Start difference. First operand 348 states and 449 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:59:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:59,257 INFO L93 Difference]: Finished difference Result 438 states and 568 transitions. [2021-12-06 22:59:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:59:59,257 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-06 22:59:59,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:59,262 INFO L225 Difference]: With dead ends: 438 [2021-12-06 22:59:59,262 INFO L226 Difference]: Without dead ends: 436 [2021-12-06 22:59:59,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:59:59,264 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 123 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:59,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 387 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:59:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-12-06 22:59:59,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 410. [2021-12-06 22:59:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 317 states have (on average 1.2807570977917981) internal successors, (406), 347 states have internal predecessors, (406), 47 states have call successors, (47), 39 states have call predecessors, (47), 45 states have return successors, (77), 40 states have call predecessors, (77), 47 states have call successors, (77) [2021-12-06 22:59:59,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 530 transitions. [2021-12-06 22:59:59,293 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 530 transitions. Word has length 32 [2021-12-06 22:59:59,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:59,293 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 530 transitions. [2021-12-06 22:59:59,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 22:59:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 530 transitions. [2021-12-06 22:59:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 22:59:59,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:59,296 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] [2021-12-06 22:59:59,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:59:59,296 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:59,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1923842840, now seen corresponding path program 1 times [2021-12-06 22:59:59,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:59,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129887383] [2021-12-06 22:59:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:59,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:59:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:59:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:59,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:59,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129887383] [2021-12-06 22:59:59,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129887383] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:59,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:59,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:59,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675979919] [2021-12-06 22:59:59,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:59,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:59,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:59,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:59,352 INFO L87 Difference]: Start difference. First operand 410 states and 530 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:59:59,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:59,519 INFO L93 Difference]: Finished difference Result 919 states and 1210 transitions. [2021-12-06 22:59:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:59:59,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-06 22:59:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:59,523 INFO L225 Difference]: With dead ends: 919 [2021-12-06 22:59:59,523 INFO L226 Difference]: Without dead ends: 516 [2021-12-06 22:59:59,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:59:59,525 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 122 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:59,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 362 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:59:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-12-06 22:59:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 462. [2021-12-06 22:59:59,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 363 states have (on average 1.2617079889807163) internal successors, (458), 393 states have internal predecessors, (458), 47 states have call successors, (47), 39 states have call predecessors, (47), 51 states have return successors, (85), 44 states have call predecessors, (85), 47 states have call successors, (85) [2021-12-06 22:59:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 590 transitions. [2021-12-06 22:59:59,551 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 590 transitions. Word has length 43 [2021-12-06 22:59:59,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:59,552 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 590 transitions. [2021-12-06 22:59:59,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:59:59,552 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 590 transitions. [2021-12-06 22:59:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 22:59:59,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:59,553 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] [2021-12-06 22:59:59,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:59:59,553 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:59,554 INFO L85 PathProgramCache]: Analyzing trace with hash 912725590, now seen corresponding path program 1 times [2021-12-06 22:59:59,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:59,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145240232] [2021-12-06 22:59:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:59,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:59:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:59:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:59,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:59,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145240232] [2021-12-06 22:59:59,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145240232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:59,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:59,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:59:59,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296202656] [2021-12-06 22:59:59,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:59,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:59:59,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:59,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:59:59,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:59:59,597 INFO L87 Difference]: Start difference. First operand 462 states and 590 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:59:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:59:59,737 INFO L93 Difference]: Finished difference Result 907 states and 1187 transitions. [2021-12-06 22:59:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:59:59,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-06 22:59:59,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:59:59,741 INFO L225 Difference]: With dead ends: 907 [2021-12-06 22:59:59,741 INFO L226 Difference]: Without dead ends: 452 [2021-12-06 22:59:59,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:59:59,749 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 130 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:59:59,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 290 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:59:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-06 22:59:59,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 356. [2021-12-06 22:59:59,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 279 states have (on average 1.2580645161290323) internal successors, (351), 302 states have internal predecessors, (351), 38 states have call successors, (38), 32 states have call predecessors, (38), 38 states have return successors, (60), 33 states have call predecessors, (60), 38 states have call successors, (60) [2021-12-06 22:59:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 449 transitions. [2021-12-06 22:59:59,772 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 449 transitions. Word has length 43 [2021-12-06 22:59:59,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:59,772 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 449 transitions. [2021-12-06 22:59:59,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 22:59:59,773 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 449 transitions. [2021-12-06 22:59:59,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 22:59:59,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:59,774 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] [2021-12-06 22:59:59,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:59:59,775 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash -108342764, now seen corresponding path program 1 times [2021-12-06 22:59:59,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530381633] [2021-12-06 22:59:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:59,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 22:59:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 22:59:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:59:59,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:59,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530381633] [2021-12-06 22:59:59,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530381633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:59,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:59:59,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:59:59,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145767702] [2021-12-06 22:59:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:59,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:59,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:59:59,827 INFO L87 Difference]: Start difference. First operand 356 states and 449 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:00:00,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:00:00,066 INFO L93 Difference]: Finished difference Result 834 states and 1117 transitions. [2021-12-06 23:00:00,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:00:00,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-12-06 23:00:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:00:00,069 INFO L225 Difference]: With dead ends: 834 [2021-12-06 23:00:00,069 INFO L226 Difference]: Without dead ends: 569 [2021-12-06 23:00:00,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:00:00,071 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 192 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:00:00,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 478 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:00:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-12-06 23:00:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 544. [2021-12-06 23:00:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 427 states have (on average 1.2295081967213115) internal successors, (525), 457 states have internal predecessors, (525), 57 states have call successors, (57), 49 states have call predecessors, (57), 59 states have return successors, (115), 58 states have call predecessors, (115), 57 states have call successors, (115) [2021-12-06 23:00:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 697 transitions. [2021-12-06 23:00:00,098 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 697 transitions. Word has length 43 [2021-12-06 23:00:00,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:00:00,098 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 697 transitions. [2021-12-06 23:00:00,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 23:00:00,099 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 697 transitions. [2021-12-06 23:00:00,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 23:00:00,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:00:00,100 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:00:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:00:00,100 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:00:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:00:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1586079607, now seen corresponding path program 1 times [2021-12-06 23:00:00,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:00:00,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049450689] [2021-12-06 23:00:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:00,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:00:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:00:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 23:00:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:00:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,153 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:00:00,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:00:00,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049450689] [2021-12-06 23:00:00,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049450689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:00:00,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:00:00,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 23:00:00,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808866631] [2021-12-06 23:00:00,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:00:00,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:00:00,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:00:00,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:00:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:00:00,154 INFO L87 Difference]: Start difference. First operand 544 states and 697 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 23:00:00,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:00:00,307 INFO L93 Difference]: Finished difference Result 918 states and 1174 transitions. [2021-12-06 23:00:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:00:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 66 [2021-12-06 23:00:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:00:00,311 INFO L225 Difference]: With dead ends: 918 [2021-12-06 23:00:00,311 INFO L226 Difference]: Without dead ends: 381 [2021-12-06 23:00:00,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:00:00,313 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 287 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:00:00,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 284 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:00:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-06 23:00:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 364. [2021-12-06 23:00:00,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 287 states have (on average 1.2229965156794425) internal successors, (351), 308 states have internal predecessors, (351), 38 states have call successors, (38), 34 states have call predecessors, (38), 38 states have return successors, (68), 38 states have call predecessors, (68), 38 states have call successors, (68) [2021-12-06 23:00:00,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 457 transitions. [2021-12-06 23:00:00,340 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 457 transitions. Word has length 66 [2021-12-06 23:00:00,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:00:00,341 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 457 transitions. [2021-12-06 23:00:00,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 4 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 23:00:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 457 transitions. [2021-12-06 23:00:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 23:00:00,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:00:00,343 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 23:00:00,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 23:00:00,344 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:00:00,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:00:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2046496720, now seen corresponding path program 1 times [2021-12-06 23:00:00,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:00:00,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169179449] [2021-12-06 23:00:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:00,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:00:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 23:00:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 23:00:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 23:00:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 23:00:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:00:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:00:00,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:00:00,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169179449] [2021-12-06 23:00:00,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169179449] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:00:00,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857644588] [2021-12-06 23:00:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:00,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:00:00,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:00:00,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:00:00,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:00:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:00:00,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:00:00,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:00:00,660 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:00:00,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:00:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:00:00,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857644588] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:00:00,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:00:00,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2021-12-06 23:00:00,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898838982] [2021-12-06 23:00:00,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:00:00,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:00:00,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:00:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:00:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:00:00,778 INFO L87 Difference]: Start difference. First operand 364 states and 457 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:00:01,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:00:01,185 INFO L93 Difference]: Finished difference Result 862 states and 1137 transitions. [2021-12-06 23:00:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 23:00:01,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 76 [2021-12-06 23:00:01,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:00:01,190 INFO L225 Difference]: With dead ends: 862 [2021-12-06 23:00:01,190 INFO L226 Difference]: Without dead ends: 573 [2021-12-06 23:00:01,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 164 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=227, Invalid=585, Unknown=0, NotChecked=0, Total=812 [2021-12-06 23:00:01,193 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 252 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:00:01,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 609 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:00:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-12-06 23:00:01,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 492. [2021-12-06 23:00:01,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 384 states have (on average 1.2291666666666667) internal successors, (472), 414 states have internal predecessors, (472), 54 states have call successors, (54), 48 states have call predecessors, (54), 53 states have return successors, (102), 50 states have call predecessors, (102), 54 states have call successors, (102) [2021-12-06 23:00:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 628 transitions. [2021-12-06 23:00:01,229 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 628 transitions. Word has length 76 [2021-12-06 23:00:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:00:01,229 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 628 transitions. [2021-12-06 23:00:01,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:00:01,230 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 628 transitions. [2021-12-06 23:00:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 23:00:01,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:00:01,236 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:00:01,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:00:01,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:00:01,438 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:00:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:00:01,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1016756628, now seen corresponding path program 2 times [2021-12-06 23:00:01,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:00:01,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028475787] [2021-12-06 23:00:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:00:01,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:00:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:00:01,517 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:00:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:00:01,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:00:01,615 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:00:01,616 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:00:01,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 23:00:01,620 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:00:01,622 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:00:01,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:00:01 BoogieIcfgContainer [2021-12-06 23:00:01,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:00:01,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:00:01,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:00:01,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:00:01,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:59:58" (3/4) ... [2021-12-06 23:00:01,681 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 23:00:01,738 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:00:01,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:00:01,739 INFO L158 Benchmark]: Toolchain (without parser) took 4288.59ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 63.8MB in the beginning and 69.1MB in the end (delta: -5.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-12-06 23:00:01,739 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:00:01,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.81ms. Allocated memory is still 102.8MB. Free memory was 63.5MB in the beginning and 71.1MB in the end (delta: -7.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:00:01,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.40ms. Allocated memory is still 102.8MB. Free memory was 71.1MB in the beginning and 68.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:00:01,740 INFO L158 Benchmark]: Boogie Preprocessor took 26.82ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 67.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:00:01,740 INFO L158 Benchmark]: RCFGBuilder took 352.68ms. Allocated memory is still 102.8MB. Free memory was 67.0MB in the beginning and 50.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 23:00:01,740 INFO L158 Benchmark]: TraceAbstraction took 3488.57ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 50.2MB in the beginning and 78.5MB in the end (delta: -28.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:00:01,741 INFO L158 Benchmark]: Witness Printer took 59.10ms. Allocated memory is still 123.7MB. Free memory was 78.5MB in the beginning and 69.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:00:01,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.81ms. Allocated memory is still 102.8MB. Free memory was 63.5MB in the beginning and 71.1MB in the end (delta: -7.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.40ms. Allocated memory is still 102.8MB. Free memory was 71.1MB in the beginning and 68.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.82ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 67.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 352.68ms. Allocated memory is still 102.8MB. Free memory was 67.0MB in the beginning and 50.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3488.57ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 50.2MB in the beginning and 78.5MB in the end (delta: -28.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 59.10ms. Allocated memory is still 123.7MB. Free memory was 78.5MB in the beginning and 69.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 339]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L133] int pumpRunning = 0; [L134] int systemActive = 1; [L344] int cleanupTimeShifts = 4; [L444] int waterLevel = 1; [L445] int methaneLevelCritical = 0; [L707] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L420] int retValue_acc ; [L421] int tmp ; [L425] FCALL select_helpers() [L426] FCALL select_features() [L427] CALL, EXPR valid_product() [L956] int retValue_acc ; [L959] retValue_acc = 1 [L960] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L427] RET, EXPR valid_product() [L427] tmp = valid_product() [L429] COND TRUE \read(tmp) [L431] FCALL setup() [L432] CALL runTest() [L411] CALL test() [L57] int splverifierCounter ; [L58] int tmp ; [L59] int tmp___0 ; [L60] int tmp___1 ; [L61] int tmp___2 ; [L64] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L78] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L462] COND TRUE waterLevel < 2 [L463] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L78] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L141] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L199] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L214] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L170] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] COND TRUE ! pumpRunning [L175] CALL, EXPR isHighWaterLevel() [L293] int retValue_acc ; [L294] int tmp ; [L295] int tmp___0 ; [L299] CALL, EXPR isHighWaterSensorDry() [L524] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L527] COND FALSE !(waterLevel < 2) [L531] retValue_acc = 0 [L532] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L299] RET, EXPR isHighWaterSensorDry() [L299] tmp = isHighWaterSensorDry() [L301] COND FALSE !(\read(tmp)) [L304] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L306] retValue_acc = tmp___0 [L307] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L175] RET, EXPR isHighWaterLevel() [L175] tmp = isHighWaterLevel() [L177] COND TRUE \read(tmp) [L179] CALL activatePump() [L224] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L179] RET activatePump() [L214] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L156] RET __utac_acc__Specification4_spec__1() [L113] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=-1, waterLevel=2] [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-1, waterLevel=2] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L450] COND TRUE waterLevel > 0 [L451] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L199] COND TRUE \read(pumpRunning) [L201] CALL, EXPR isMethaneAlarm() [L237] int retValue_acc ; [L241] CALL, EXPR isMethaneLevelCritical() [L483] int retValue_acc ; [L486] retValue_acc = methaneLevelCritical [L487] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L241] RET, EXPR isMethaneLevelCritical() [L241] retValue_acc = isMethaneLevelCritical() [L243] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L201] RET, EXPR isMethaneAlarm() [L201] tmp = isMethaneAlarm() [L203] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L209] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L209] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L156] RET __utac_acc__Specification4_spec__1() [L113] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L66] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L68] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L74] tmp = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L84] tmp___0 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=-2, waterLevel=1] [L94] tmp___2 = __VERIFIER_nondet_int() [L96] COND TRUE \read(tmp___2) [L98] CALL startSystem() [L330] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L98] RET startSystem() [L113] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L141] COND TRUE \read(pumpRunning) [L143] CALL lowerWaterLevel() [L450] COND TRUE waterLevel > 0 [L451] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L143] RET lowerWaterLevel() [L148] COND TRUE \read(systemActive) [L150] CALL processEnvironment() [L196] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L199] COND TRUE \read(pumpRunning) [L201] CALL, EXPR isMethaneAlarm() [L237] int retValue_acc ; [L241] CALL, EXPR isMethaneLevelCritical() [L483] int retValue_acc ; [L486] retValue_acc = methaneLevelCritical [L487] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L241] RET, EXPR isMethaneLevelCritical() [L241] retValue_acc = isMethaneLevelCritical() [L243] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L201] RET, EXPR isMethaneAlarm() [L201] tmp = isMethaneAlarm() [L203] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L209] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L170] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L173] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L188] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L209] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L905] int tmp ; [L906] int tmp___0 ; [L910] CALL, EXPR getWaterLevel() [L515] int retValue_acc ; [L518] retValue_acc = waterLevel [L519] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L910] RET, EXPR getWaterLevel() [L910] tmp = getWaterLevel() [L912] COND TRUE tmp == 0 [L914] CALL, EXPR isPumpRunning() [L248] int retValue_acc ; [L251] retValue_acc = pumpRunning [L252] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L914] RET, EXPR isPumpRunning() [L914] tmp___0 = isPumpRunning() [L916] COND TRUE \read(tmp___0) [L918] CALL __automaton_fail() [L339] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1342 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1318 mSDsluCounter, 3370 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2235 mSDsCounter, 361 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1441 IncrementalHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 361 mSolverCounterUnsat, 1135 mSDtfsCounter, 1441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 205 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=544occurred in iteration=9, InterpolantAutomatonStates: 96, 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, 11 MinimizatonAttempts, 311 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 610 NumberOfCodeBlocks, 610 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 564 ConstructedInterpolants, 0 QuantifiedInterpolants, 1061 SizeOfPredicates, 4 NumberOfNonLiveVariables, 420 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 59/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 23:00:01,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32c5952c-e9cb-4504-9b1f-f09a468c73c2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE