./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL --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 cb82edc0720115a7daf634e8ab19e02bd974ec3bbe9487e9c9b9a9d3ab6ca10d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:04:18,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:04:18,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:04:18,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:04:18,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:04:18,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:04:18,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:04:18,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:04:18,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:04:18,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:04:18,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:04:18,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:04:18,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:04:18,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:04:18,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:04:18,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:04:18,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:04:18,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:04:18,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:04:18,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:04:18,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:04:18,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:04:18,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:04:18,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:04:18,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:04:18,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:04:18,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:04:18,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:04:18,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:04:18,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:04:18,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:04:18,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:04:18,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:04:18,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:04:18,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:04:18,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:04:18,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:04:18,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:04:18,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:04:18,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:04:18,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:04:18,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:04:18,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:04:18,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:04:18,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:04:18,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:04:18,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:04:18,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:04:18,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:04:18,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:04:18,777 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:04:18,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:04:18,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:04:18,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:04:18,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:04:18,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:04:18,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:04:18,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:04:18,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:04:18,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:04:18,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:04:18,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:04:18,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:04:18,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:04:18,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:04:18,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:04:18,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:18,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:04:18,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:04:18,782 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:04:18,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:04:18,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:04:18,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:04:18,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:04:18,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:04:18,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:04:18,784 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_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb82edc0720115a7daf634e8ab19e02bd974ec3bbe9487e9c9b9a9d3ab6ca10d [2021-11-19 05:04:19,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:04:19,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:04:19,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:04:19,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:04:19,206 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:04:19,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2021-11-19 05:04:19,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/data/67647ea6f/93f6d60e44054460b4e4c4178bb25328/FLAG9d9774ddd [2021-11-19 05:04:19,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:04:19,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c [2021-11-19 05:04:19,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/data/67647ea6f/93f6d60e44054460b4e4c4178bb25328/FLAG9d9774ddd [2021-11-19 05:04:20,204 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/data/67647ea6f/93f6d60e44054460b4e4c4178bb25328 [2021-11-19 05:04:20,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:04:20,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:04:20,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:20,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:04:20,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:04:20,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4be268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20, skipping insertion in model container [2021-11-19 05:04:20,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:04:20,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:04:20,589 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_77b299eb-fe14-405c-8a9f-d41ec357818d/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c[6627,6640] [2021-11-19 05:04:20,723 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:20,744 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:04:20,787 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_77b299eb-fe14-405c-8a9f-d41ec357818d/sv-benchmarks/c/product-lines/minepump_spec4_product36.cil.c[6627,6640] [2021-11-19 05:04:20,836 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:20,867 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:04:20,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20 WrapperNode [2021-11-19 05:04:20,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:20,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:20,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:04:20,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:04:20,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,947 INFO L137 Inliner]: procedures = 54, calls = 152, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 233 [2021-11-19 05:04:20,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:20,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:04:20,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:04:20,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:04:20,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:20,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:04:21,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:04:21,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:04:21,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:04:21,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (1/1) ... [2021-11-19 05:04:21,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:21,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:04:21,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:04:21,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:04:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:04:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-19 05:04:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-19 05:04:21,123 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 05:04:21,123 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 05:04:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 05:04:21,124 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 05:04:21,124 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-19 05:04:21,124 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-19 05:04:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:04:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-19 05:04:21,125 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-19 05:04:21,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:04:21,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:04:21,244 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:04:21,246 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:04:21,611 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:04:21,620 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:04:21,620 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 05:04:21,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:21 BoogieIcfgContainer [2021-11-19 05:04:21,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:04:21,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:04:21,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:04:21,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:04:21,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:20" (1/3) ... [2021-11-19 05:04:21,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ebfbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:21, skipping insertion in model container [2021-11-19 05:04:21,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:20" (2/3) ... [2021-11-19 05:04:21,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ebfbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:21, skipping insertion in model container [2021-11-19 05:04:21,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:21" (3/3) ... [2021-11-19 05:04:21,650 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2021-11-19 05:04:21,663 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:04:21,663 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:04:21,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:04:21,727 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 [2021-11-19 05:04:21,728 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:04:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-19 05:04:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:04:21,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:21,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:21,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash 333655523, now seen corresponding path program 1 times [2021-11-19 05:04:21,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:21,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167342600] [2021-11-19 05:04:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:21,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:22,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:22,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167342600] [2021-11-19 05:04:22,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167342600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:22,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:22,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:04:22,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105262975] [2021-11-19 05:04:22,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:22,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:04:22,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:04:22,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:04:22,200 INFO L87 Difference]: Start difference. First operand has 75 states, 60 states have (on average 1.4) internal successors, (84), 66 states have internal predecessors, (84), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-19 05:04:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:22,264 INFO L93 Difference]: Finished difference Result 142 states and 195 transitions. [2021-11-19 05:04:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:04:22,270 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 [2021-11-19 05:04:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:22,285 INFO L225 Difference]: With dead ends: 142 [2021-11-19 05:04:22,286 INFO L226 Difference]: Without dead ends: 66 [2021-11-19 05:04:22,292 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 [2021-11-19 05:04:22,299 INFO L933 BasicCegarLoop]: 94 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, 94 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 [2021-11-19 05:04:22,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-11-19 05:04:22,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-11-19 05:04:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.320754716981132) internal successors, (70), 58 states have internal predecessors, (70), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 05:04:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2021-11-19 05:04:22,393 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 19 [2021-11-19 05:04:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:22,394 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2021-11-19 05:04:22,394 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) [2021-11-19 05:04:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2021-11-19 05:04:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:04:22,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:22,400 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] [2021-11-19 05:04:22,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:04:22,402 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:22,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1907368950, now seen corresponding path program 1 times [2021-11-19 05:04:22,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:22,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521594883] [2021-11-19 05:04:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:22,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:22,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:22,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521594883] [2021-11-19 05:04:22,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521594883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:22,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:22,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:22,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931244628] [2021-11-19 05:04:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:22,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:22,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:22,586 INFO L87 Difference]: Start difference. First operand 66 states and 85 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) [2021-11-19 05:04:22,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:22,610 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2021-11-19 05:04:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:22,611 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 [2021-11-19 05:04:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:22,618 INFO L225 Difference]: With dead ends: 93 [2021-11-19 05:04:22,618 INFO L226 Difference]: Without dead ends: 57 [2021-11-19 05:04:22,624 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 [2021-11-19 05:04:22,627 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 18 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 122 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 [2021-11-19 05:04:22,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 122 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:22,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-19 05:04:22,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-19 05:04:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 52 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 05:04:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2021-11-19 05:04:22,659 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2021-11-19 05:04:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:22,660 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2021-11-19 05:04:22,662 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) [2021-11-19 05:04:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2021-11-19 05:04:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-19 05:04:22,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:22,665 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] [2021-11-19 05:04:22,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:04:22,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash 75787182, now seen corresponding path program 1 times [2021-11-19 05:04:22,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:22,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9225460] [2021-11-19 05:04:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:22,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:22,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:22,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9225460] [2021-11-19 05:04:22,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9225460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:22,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:22,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:22,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396458337] [2021-11-19 05:04:22,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:22,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:22,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:22,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:22,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:22,785 INFO L87 Difference]: Start difference. First operand 57 states and 73 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) [2021-11-19 05:04:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:22,828 INFO L93 Difference]: Finished difference Result 155 states and 204 transitions. [2021-11-19 05:04:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:22,829 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 [2021-11-19 05:04:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:22,831 INFO L225 Difference]: With dead ends: 155 [2021-11-19 05:04:22,832 INFO L226 Difference]: Without dead ends: 105 [2021-11-19 05:04:22,833 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 [2021-11-19 05:04:22,834 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 65 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 148 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 [2021-11-19 05:04:22,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 148 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:22,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-19 05:04:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2021-11-19 05:04:22,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 90 states have internal predecessors, (111), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 05:04:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 131 transitions. [2021-11-19 05:04:22,864 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 131 transitions. Word has length 25 [2021-11-19 05:04:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:22,864 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 131 transitions. [2021-11-19 05:04:22,865 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) [2021-11-19 05:04:22,865 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 131 transitions. [2021-11-19 05:04:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 05:04:22,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:22,867 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] [2021-11-19 05:04:22,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:04:22,868 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:22,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1851583277, now seen corresponding path program 1 times [2021-11-19 05:04:22,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:22,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675196393] [2021-11-19 05:04:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:22,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:23,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:23,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675196393] [2021-11-19 05:04:23,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675196393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:23,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:23,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:04:23,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638658009] [2021-11-19 05:04:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:23,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:04:23,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:23,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:04:23,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:23,026 INFO L87 Difference]: Start difference. First operand 100 states and 131 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) [2021-11-19 05:04:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:23,164 INFO L93 Difference]: Finished difference Result 274 states and 374 transitions. [2021-11-19 05:04:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:04:23,165 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 [2021-11-19 05:04:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:23,168 INFO L225 Difference]: With dead ends: 274 [2021-11-19 05:04:23,170 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 05:04:23,173 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 [2021-11-19 05:04:23,176 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 44 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:23,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 277 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 05:04:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-19 05:04:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 146 states have (on average 1.3424657534246576) internal successors, (196), 161 states have internal predecessors, (196), 20 states have call successors, (20), 16 states have call predecessors, (20), 14 states have return successors, (22), 14 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-19 05:04:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 238 transitions. [2021-11-19 05:04:23,208 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 238 transitions. Word has length 28 [2021-11-19 05:04:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:23,208 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 238 transitions. [2021-11-19 05:04:23,208 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) [2021-11-19 05:04:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 238 transitions. [2021-11-19 05:04:23,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-19 05:04:23,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:23,212 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] [2021-11-19 05:04:23,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:04:23,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:23,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:23,213 INFO L85 PathProgramCache]: Analyzing trace with hash 983875416, now seen corresponding path program 1 times [2021-11-19 05:04:23,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:23,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110782239] [2021-11-19 05:04:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:23,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:23,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:23,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110782239] [2021-11-19 05:04:23,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110782239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:23,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:23,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:04:23,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324791764] [2021-11-19 05:04:23,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:23,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:23,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:23,302 INFO L87 Difference]: Start difference. First operand 181 states and 238 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) [2021-11-19 05:04:23,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:23,391 INFO L93 Difference]: Finished difference Result 471 states and 637 transitions. [2021-11-19 05:04:23,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:23,391 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 [2021-11-19 05:04:23,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:23,396 INFO L225 Difference]: With dead ends: 471 [2021-11-19 05:04:23,396 INFO L226 Difference]: Without dead ends: 297 [2021-11-19 05:04:23,398 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 [2021-11-19 05:04:23,400 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 44 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:23,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 120 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-11-19 05:04:23,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2021-11-19 05:04:23,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 238 states have (on average 1.315126050420168) internal successors, (313), 253 states have internal predecessors, (313), 30 states have call successors, (30), 30 states have call predecessors, (30), 26 states have return successors, (42), 26 states have call predecessors, (42), 30 states have call successors, (42) [2021-11-19 05:04:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 385 transitions. [2021-11-19 05:04:23,446 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 385 transitions. Word has length 30 [2021-11-19 05:04:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:23,447 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 385 transitions. [2021-11-19 05:04:23,447 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) [2021-11-19 05:04:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 385 transitions. [2021-11-19 05:04:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-19 05:04:23,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:23,450 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] [2021-11-19 05:04:23,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:04:23,450 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:23,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:23,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2061828423, now seen corresponding path program 1 times [2021-11-19 05:04:23,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:23,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087751640] [2021-11-19 05:04:23,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:23,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 05:04:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:23,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:23,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087751640] [2021-11-19 05:04:23,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087751640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:23,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:23,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:04:23,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921451570] [2021-11-19 05:04:23,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:23,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:04:23,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:23,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:04:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:04:23,544 INFO L87 Difference]: Start difference. First operand 295 states and 385 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) [2021-11-19 05:04:23,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:23,810 INFO L93 Difference]: Finished difference Result 391 states and 508 transitions. [2021-11-19 05:04:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:04:23,811 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 [2021-11-19 05:04:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:23,816 INFO L225 Difference]: With dead ends: 391 [2021-11-19 05:04:23,817 INFO L226 Difference]: Without dead ends: 389 [2021-11-19 05:04:23,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:04:23,819 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 116 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:23,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 342 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:04:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-19 05:04:23,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 363. [2021-11-19 05:04:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 294 states have (on average 1.2993197278911566) internal successors, (382), 319 states have internal predecessors, (382), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (54), 30 states have call predecessors, (54), 34 states have call successors, (54) [2021-11-19 05:04:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 470 transitions. [2021-11-19 05:04:23,871 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 470 transitions. Word has length 32 [2021-11-19 05:04:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:23,872 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 470 transitions. [2021-11-19 05:04:23,872 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) [2021-11-19 05:04:23,872 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 470 transitions. [2021-11-19 05:04:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:04:23,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:23,876 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] [2021-11-19 05:04:23,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:04:23,877 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:23,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:23,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1259749296, now seen corresponding path program 1 times [2021-11-19 05:04:23,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:23,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826814591] [2021-11-19 05:04:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:23,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:23,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 05:04:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:24,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:24,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826814591] [2021-11-19 05:04:24,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826814591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:24,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:24,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:04:24,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191522037] [2021-11-19 05:04:24,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:24,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:04:24,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:24,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:04:24,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:04:24,004 INFO L87 Difference]: Start difference. First operand 363 states and 470 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:04:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:24,361 INFO L93 Difference]: Finished difference Result 947 states and 1237 transitions. [2021-11-19 05:04:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:04:24,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 05:04:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:24,384 INFO L225 Difference]: With dead ends: 947 [2021-11-19 05:04:24,384 INFO L226 Difference]: Without dead ends: 591 [2021-11-19 05:04:24,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:04:24,393 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 391 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:24,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 387 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:04:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-19 05:04:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 371. [2021-11-19 05:04:24,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 302 states have (on average 1.2847682119205297) internal successors, (388), 327 states have internal predecessors, (388), 34 states have call successors, (34), 30 states have call predecessors, (34), 34 states have return successors, (54), 30 states have call predecessors, (54), 34 states have call successors, (54) [2021-11-19 05:04:24,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 476 transitions. [2021-11-19 05:04:24,490 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 476 transitions. Word has length 38 [2021-11-19 05:04:24,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:24,490 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 476 transitions. [2021-11-19 05:04:24,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:04:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 476 transitions. [2021-11-19 05:04:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:04:24,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:24,494 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] [2021-11-19 05:04:24,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:04:24,495 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:24,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:24,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1001583858, now seen corresponding path program 1 times [2021-11-19 05:04:24,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:24,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252314362] [2021-11-19 05:04:24,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:24,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 05:04:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:24,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:24,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:24,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252314362] [2021-11-19 05:04:24,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252314362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:24,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:24,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:04:24,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221153131] [2021-11-19 05:04:24,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:24,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:04:24,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:24,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:04:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:04:24,590 INFO L87 Difference]: Start difference. First operand 371 states and 476 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-19 05:04:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:24,797 INFO L93 Difference]: Finished difference Result 748 states and 958 transitions. [2021-11-19 05:04:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:04:24,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 38 [2021-11-19 05:04:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:24,803 INFO L225 Difference]: With dead ends: 748 [2021-11-19 05:04:24,804 INFO L226 Difference]: Without dead ends: 384 [2021-11-19 05:04:24,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:04:24,816 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 114 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:24,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 347 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-19 05:04:24,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 324. [2021-11-19 05:04:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 267 states have (on average 1.2659176029962547) internal successors, (338), 288 states have internal predecessors, (338), 28 states have call successors, (28), 24 states have call predecessors, (28), 28 states have return successors, (38), 26 states have call predecessors, (38), 28 states have call successors, (38) [2021-11-19 05:04:24,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 404 transitions. [2021-11-19 05:04:24,859 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 404 transitions. Word has length 38 [2021-11-19 05:04:24,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:24,861 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 404 transitions. [2021-11-19 05:04:24,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-19 05:04:24,865 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 404 transitions. [2021-11-19 05:04:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:04:24,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:24,874 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] [2021-11-19 05:04:24,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:04:24,875 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:24,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash 248632046, now seen corresponding path program 1 times [2021-11-19 05:04:24,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:24,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677095068] [2021-11-19 05:04:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:24,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:24,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 05:04:24,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:24,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:24,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:24,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677095068] [2021-11-19 05:04:24,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677095068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:24,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:24,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:04:24,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566878794] [2021-11-19 05:04:24,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:24,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:04:24,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:24,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:04:24,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:04:24,985 INFO L87 Difference]: Start difference. First operand 324 states and 404 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-19 05:04:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:25,202 INFO L93 Difference]: Finished difference Result 732 states and 970 transitions. [2021-11-19 05:04:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:04:25,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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 38 [2021-11-19 05:04:25,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:25,212 INFO L225 Difference]: With dead ends: 732 [2021-11-19 05:04:25,213 INFO L226 Difference]: Without dead ends: 489 [2021-11-19 05:04:25,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:04:25,227 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 97 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:25,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 449 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:25,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-19 05:04:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2021-11-19 05:04:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 398 states have (on average 1.2386934673366834) internal successors, (493), 425 states have internal predecessors, (493), 44 states have call successors, (44), 38 states have call predecessors, (44), 44 states have return successors, (78), 42 states have call predecessors, (78), 44 states have call successors, (78) [2021-11-19 05:04:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 615 transitions. [2021-11-19 05:04:25,275 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 615 transitions. Word has length 38 [2021-11-19 05:04:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:25,276 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 615 transitions. [2021-11-19 05:04:25,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-19 05:04:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 615 transitions. [2021-11-19 05:04:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 05:04:25,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:25,281 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] [2021-11-19 05:04:25,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:04:25,281 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:25,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:25,282 INFO L85 PathProgramCache]: Analyzing trace with hash 114679, now seen corresponding path program 1 times [2021-11-19 05:04:25,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:25,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736583306] [2021-11-19 05:04:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:25,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 05:04:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-11-19 05:04:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:25,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:25,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736583306] [2021-11-19 05:04:25,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736583306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:25,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:25,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:04:25,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235037347] [2021-11-19 05:04:25,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:25,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:04:25,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:25,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:04:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:04:25,373 INFO L87 Difference]: Start difference. First operand 487 states and 615 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:04:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:25,585 INFO L93 Difference]: Finished difference Result 823 states and 1040 transitions. [2021-11-19 05:04:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:04:25,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-11-19 05:04:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:25,590 INFO L225 Difference]: With dead ends: 823 [2021-11-19 05:04:25,590 INFO L226 Difference]: Without dead ends: 343 [2021-11-19 05:04:25,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:04:25,593 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 141 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:25,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 286 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-19 05:04:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 335. [2021-11-19 05:04:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 273 states have (on average 1.2307692307692308) internal successors, (336), 292 states have internal predecessors, (336), 31 states have call successors, (31), 28 states have call predecessors, (31), 30 states have return successors, (49), 29 states have call predecessors, (49), 31 states have call successors, (49) [2021-11-19 05:04:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 416 transitions. [2021-11-19 05:04:25,633 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 416 transitions. Word has length 61 [2021-11-19 05:04:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:25,634 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 416 transitions. [2021-11-19 05:04:25,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:04:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 416 transitions. [2021-11-19 05:04:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 05:04:25,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:25,637 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 05:04:25,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:04:25,638 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:25,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:25,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1339398285, now seen corresponding path program 1 times [2021-11-19 05:04:25,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:25,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293611195] [2021-11-19 05:04:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:25,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-19 05:04:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-19 05:04:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 05:04:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:25,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:25,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293611195] [2021-11-19 05:04:25,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293611195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:04:25,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645369477] [2021-11-19 05:04:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:25,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:04:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:04:25,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:04:25,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:04:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:25,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 05:04:25,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:04:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:26,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:04:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:26,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645369477] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:04:26,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 05:04:26,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2021-11-19 05:04:26,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862518450] [2021-11-19 05:04:26,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 05:04:26,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:04:26,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:04:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:04:26,484 INFO L87 Difference]: Start difference. First operand 335 states and 416 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:04:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:26,905 INFO L93 Difference]: Finished difference Result 776 states and 1009 transitions. [2021-11-19 05:04:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:04:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2021-11-19 05:04:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:26,911 INFO L225 Difference]: With dead ends: 776 [2021-11-19 05:04:26,911 INFO L226 Difference]: Without dead ends: 511 [2021-11-19 05:04:26,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:04:26,914 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 189 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:26,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 552 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:04:26,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-19 05:04:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 452. [2021-11-19 05:04:26,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 366 states have (on average 1.2349726775956285) internal successors, (452), 392 states have internal predecessors, (452), 43 states have call successors, (43), 39 states have call predecessors, (43), 42 states have return successors, (72), 38 states have call predecessors, (72), 43 states have call successors, (72) [2021-11-19 05:04:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 567 transitions. [2021-11-19 05:04:26,958 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 567 transitions. Word has length 63 [2021-11-19 05:04:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:26,959 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 567 transitions. [2021-11-19 05:04:26,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 05:04:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 567 transitions. [2021-11-19 05:04:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 05:04:26,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:26,962 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:27,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:04:27,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-19 05:04:27,184 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:27,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1539867278, now seen corresponding path program 2 times [2021-11-19 05:04:27,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:27,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455102937] [2021-11-19 05:04:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:27,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:04:27,238 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:04:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:04:27,329 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:04:27,329 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:04:27,331 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:04:27,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:04:27,337 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:27,341 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:04:27,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:04:27 BoogieIcfgContainer [2021-11-19 05:04:27,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:04:27,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:04:27,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:04:27,461 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:04:27,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:21" (3/4) ... [2021-11-19 05:04:27,464 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:04:27,624 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:04:27,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:04:27,625 INFO L158 Benchmark]: Toolchain (without parser) took 7415.03ms. Allocated memory was 94.4MB in the beginning and 146.8MB in the end (delta: 52.4MB). Free memory was 53.1MB in the beginning and 42.6MB in the end (delta: 10.5MB). Peak memory consumption was 62.8MB. Max. memory is 16.1GB. [2021-11-19 05:04:27,625 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 94.4MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:04:27,626 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.49ms. Allocated memory is still 94.4MB. Free memory was 73.5MB in the beginning and 61.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 05:04:27,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.47ms. Allocated memory is still 94.4MB. Free memory was 61.8MB in the beginning and 59.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:04:27,626 INFO L158 Benchmark]: Boogie Preprocessor took 54.59ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 58.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:04:27,627 INFO L158 Benchmark]: RCFGBuilder took 629.02ms. Allocated memory is still 94.4MB. Free memory was 58.0MB in the beginning and 42.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 05:04:27,628 INFO L158 Benchmark]: TraceAbstraction took 5824.89ms. Allocated memory was 94.4MB in the beginning and 146.8MB in the end (delta: 52.4MB). Free memory was 42.3MB in the beginning and 51.0MB in the end (delta: -8.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2021-11-19 05:04:27,629 INFO L158 Benchmark]: Witness Printer took 163.63ms. Allocated memory is still 146.8MB. Free memory was 51.0MB in the beginning and 42.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:04:27,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 94.4MB. Free memory is still 70.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.49ms. Allocated memory is still 94.4MB. Free memory was 73.5MB in the beginning and 61.8MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.47ms. Allocated memory is still 94.4MB. Free memory was 61.8MB in the beginning and 59.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.59ms. Allocated memory is still 94.4MB. Free memory was 59.5MB in the beginning and 58.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 629.02ms. Allocated memory is still 94.4MB. Free memory was 58.0MB in the beginning and 42.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5824.89ms. Allocated memory was 94.4MB in the beginning and 146.8MB in the end (delta: 52.4MB). Free memory was 42.3MB in the beginning and 51.0MB in the end (delta: -8.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. * Witness Printer took 163.63ms. Allocated memory is still 146.8MB. Free memory was 51.0MB in the beginning and 42.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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: 447]: 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; [L309] int cleanupTimeShifts = 4; [L621] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L819] int waterLevel = 1; [L820] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L385] int retValue_acc ; [L386] int tmp ; [L390] FCALL select_helpers() [L391] FCALL select_features() [L392] CALL, EXPR valid_product() [L434] int retValue_acc ; [L437] retValue_acc = 1 [L438] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L392] RET, EXPR valid_product() [L392] tmp = valid_product() [L394] COND TRUE \read(tmp) [L396] FCALL setup() [L397] CALL runTest() [L376] 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] [L837] COND TRUE waterLevel < 2 [L838] 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() [L304] 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() [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() [L267] int retValue_acc ; [L268] int tmp ; [L269] int tmp___0 ; [L273] CALL, EXPR isHighWaterSensorDry() [L899] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L902] COND FALSE !(waterLevel < 2) [L906] retValue_acc = 0 [L907] 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] [L273] RET, EXPR isHighWaterSensorDry() [L273] tmp = isHighWaterSensorDry() [L275] COND FALSE !(\read(tmp)) [L278] 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] [L280] retValue_acc = tmp___0 [L281] 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() [L198] 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() [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L919] CALL, EXPR getWaterLevel() [L890] int retValue_acc ; [L893] retValue_acc = waterLevel [L894] 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] [L919] RET, EXPR getWaterLevel() [L919] tmp = getWaterLevel() [L921] 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() [L304] 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() [L825] COND TRUE waterLevel > 0 [L826] 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() [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] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L919] CALL, EXPR getWaterLevel() [L890] int retValue_acc ; [L893] retValue_acc = waterLevel [L894] 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] [L919] RET, EXPR getWaterLevel() [L919] tmp = getWaterLevel() [L921] 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() [L304] 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() [L825] COND TRUE waterLevel > 0 [L826] 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() [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] [L150] RET processEnvironment() [L156] CALL __utac_acc__Specification4_spec__1() [L914] int tmp ; [L915] int tmp___0 ; [L919] CALL, EXPR getWaterLevel() [L890] int retValue_acc ; [L893] retValue_acc = waterLevel [L894] 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] [L919] RET, EXPR getWaterLevel() [L919] tmp = getWaterLevel() [L921] COND TRUE tmp == 0 [L923] CALL, EXPR isPumpRunning() [L222] int retValue_acc ; [L225] retValue_acc = pumpRunning [L226] 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] [L923] RET, EXPR isPumpRunning() [L923] tmp___0 = isPumpRunning() [L925] COND TRUE \read(tmp___0) [L927] CALL __automaton_fail() [L447] 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 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1252 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1219 mSDsluCounter, 3124 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2163 mSDsCounter, 168 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 792 IncrementalHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 168 mSolverCounterUnsat, 961 mSDtfsCounter, 792 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=9, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 382 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 505 ConstructedInterpolants, 0 QuantifiedInterpolants, 974 SizeOfPredicates, 4 NumberOfNonLiveVariables, 385 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 53/66 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! [2021-11-19 05:04:27,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77b299eb-fe14-405c-8a9f-d41ec357818d/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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